Omega 2+ boot stuck



  • Connected an FTDI cable and can see the boot sequence, but it hangs every time on random: nonblocking pool is initialized. Any ideas for what's wrong and how I can fix it?

    Thanks a million.



  • @Jacob-Bendicksen
    What happens if you hit an Enter ?



  • @György-Farkas Nothing as far as I can tell. I'm using CoolTerm and send a carriage return via Send String, but nothing happens.



  • Hm - just started working. Thanks anyway!



  • There are a lot of reports of this across Google for various distributions including OpenWRT. No real solutions.

    The "random: nonblocking pool initialized" message occurs when enough random (entropy) is finally collected to properly initialize /dev/urandom.

    /dev/random is true randomness and so requests to it have to wait until enough random data is collected.
    /dev/urandom is pseudo-randomness, requests are answered even if there isn't enough data to properly init (called the nonblocking pool since it won't block).

    If you scan dmesg you will see warnings during boot of random data provided even though the pool isn't properly seeded:

    [ 5.603477] random: procd: uninitialized urandom read (4 bytes read, 10 bits of entropy available)
    [ 8.103183] urandom-seed: Seeding with /etc/urandom.seed
    [ 9.136232] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits of entropy available)
    [ 9.145971] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits of entropy available)
    [ 9.155201] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits of entropy available)
    [ 9.164803] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits of entropy available)
    [ 9.174017] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits of entropy available)
    [ 9.183671] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits of entropy available)
    [ 9.193031] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits of entropy available)
    [ 12.104091] random: jshn: uninitialized urandom read (4 bytes read, 22 bits of entropy available)
    [ 12.209382] random: ubusd: uninitialized urandom read (4 bytes read, 22 bits of entropy available)
    [ 54.978691] random: nonblocking pool is initialized

    So basically this means that the hang-up is not occurring during boot, it has to be during the startup of the Linux system.

    If you are lucky, you will still have data in the kernel buffer (logread) that matches up with the static dmesg data and you might be able to figure out what happens next... you might even see that message in the logread data!

    On my Omega2+, what happened next was restarting dnsmasq to support the interfaces (I guess this makes sense, the required entropy probably came from packet arrival times after the interfaces came up)...

    Tue Aug 1 14:26:10 2017 daemon.info odhcpd[836]: Initial RA router lifetime 0, 1 address(es) available on br-wlan
    Tue Aug 1 14:26:12 2017 kern.notice kernel: [ 54.978691] random: nonblocking pool is initialized
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq[1447]: exiting on receipt of SIGTERM
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq[1737]: started, version 2.76 cachesize 150
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq[1737]: compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP no-DHCPv6 no
    -Lua TFTP no-conntrack no-ipset no-auth no-DNSSEC no-ID loop-detect inotify
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq[1737]: DNS service limited to local subnets
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq-dhcp[1737]: DHCP, IP range 192.168.3.100 -- 192.168.3.249, lease time 12h
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq[1737]: using local addresses only for domain lan
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq[1737]: reading /tmp/resolv.conf.auto
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq[1737]: using local addresses only for domain lan
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq[1737]: using nameserver xxx.xxx.xxx.xxx#53
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq[1737]: read /etc/hosts - 4 addresses
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq[1737]: read /tmp/hosts/odhcpd - 0 addresses
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq[1737]: read /tmp/hosts/dhcp.cfg02411c - 2 addresses
    Tue Aug 1 14:26:12 2017 daemon.info dnsmasq-dhcp[1737]: read /etc/ethers - 0 addresses

    Not sure it's relevant, but it's a place to look...



  • I have the same problem. Firmware is 0.1.10-b160. Also can't start flashing new image from u-boot. When I press reset button, u-boot didn't wait for 40 sec and start to load kernel.


    • Hold Reset button for more options *

    You have 40 seconds left to select a menu option...

    Please select option:
    [ Enter ]: Boot Omega2.
    [ 0 ]: Start Web recovery mode.
    [ 1 ]: Start command line mode.
    [ 2 ]: Flash firmware from USB storage.

    Option [
    Boot Linux from Flash.



  • @Yuriy-Ney-0 said in Omega 2+ boot stuck:

    I have the same problem. Firmware is 0.1.10-b160. Also can't start flashing new image from u-boot. When I press reset button, u-boot didn't wait for 40 sec and start to load kernel.

    I think you have a different problem.

    1. Switch your Omega's power off.
    2. Press the Reset button and hold down.
    3. Switch power on.
    4. Release the Reset button and you have 40 seconds left to select one of the UBoot menu options.
    Board: Onion Omega2 APSoC DRAM:  128 MB
    relocate_code Pointer at: 87f60000
    flash manufacture id: c2, device id 20 19
    find flash: MX25L25635E
    *** Warning - bad CRC, using default environment
    
    ============================================
    Onion Omega2 UBoot Version: 4.3.0.3
    --------------------------------------------
    ASIC 7628_MP (Port5<->None)
    DRAM component: 1024 Mbits DDR, width 16
    DRAM bus: 16 bit
    Total memory: 128 MBytes
    Flash component: SPI Flash
    Date:Oct 18 2016  Time:17:29:05
    ============================================
    icache: sets:512, ways:4, linesz:32 ,total:65536
    dcache: sets:256, ways:4, linesz:32 ,total:32768
    CPU freq = 575 MHZ
    Estimated memory size = 128 Mbytes
    Resetting MT7628 PHY.
    Initializing MT7688 GPIO system.
    
    
    **************************************
    * Hold Reset button for more options *
    **************************************
    
    
    You have 40 seconds left to select a menu option...
    
    
    Please select option:
       [ Enter ]: Boot Omega2.
       [ 0 ]: Start Web recovery mode.
       [ 1 ]: Start command line mode.
       [ 2 ]: Flash firmware from USB storage.
    
    Boot Linux from Flash.
    ## Booting image at bc050000 ...
       Image Name:   MIPS LEDE Linux-4.4.46
       Image Type:   MIPS Linux Kernel Image (lzma compressed)
       Data Size:    1311684 Bytes =  1.3 MB
       Load Address: 80000000
       Entry Point:  80000000
       Verifying Checksum ... OK
       Uncompressing Kernel Image ... OK
    No initrd
    ## Transferring control to Linux (at address 80000000) ...
    ## Giving linux memsize in MB, 128
    
    Starting kernel ...
    
    

    In the above example I didn't press anything so the default option [ Enter ]: Boot Omega2 effected after ~40 seconds.

    IMHO there isn't better official firmware presently than v0.1.10-b160.



  • @György-Farkas

    O.K. Here is a video with booting process.



  • It looks like you need to press enter per the prompt. The procd init piece is where the boot up sequence switches to running init. In normal Linux that's what sets up the ttys and takes over the console so you can have multiple sessions.

    So I think it's waiting on you, LONG before the pool is finally initialized



  • @Yuriy-Ney said in Omega 2+ boot stuck:

    @György-Farkas

    O.K. Here is a video with booting process.

    So you really have a different problem.

    If your Omega2+ is not able to fully boot at all - try to use a better power supply and/or a better USB cable.
    I think using the same USB cable for powering and for serial connection is a simple and cheap solution but not the best (Onion's) idea.
    And not a too good idea to flash firmware from USB storage if your laptop's USB host port is not provide enough power.


    The power switch of Expansion Dock is not fully switch off the power - it is only disable the (step down) voltage regulator IC.
    If you really want to can not enter to the UBoot menu you should check there is no 3.3V when the power switch is off.

    Or simply:
    1. disconnect the micro USB cable (ie switch off the power)
    2. press the Reset button and hold down
    3. connect the micro USB cable (ie switch on the power)
    4. release the Reset button and you have 40 seconds left ...

    It is so simple - theoretically ;-)
    "“In theory, there is no difference between theory and practice. But, in practice, there is“
    / Jan L. A. van de Snepscheut /



  • @Burton-Strauss
    Thank you for this nice explanation. Please carry on - for example in the What does this message mean?
    (If you want a better topic title I'll change it :)


    Back to the original post(s).

    @Jacob-Bendicksen
    I think his Omega2(+) was working well - he just tried the serial console.
    As you know on a default Omega2 the last messages are related to the WiFi subsystem. After a while the mentioned "random: nonblocking pool is initialized" appears.
    The user should simply hit the Enter key - transmit a CR LF (0x0d 0x0a) or an LF to Omega - to login.

    @Jacob-Bendicksen said in Omega 2+ boot stuck:

    Nothing as far as I can tell. I'm using CoolTerm and send a carriage return via Send String, but nothing happens.

    I think he sent some unterminated string in a misconfigured terminal program - so nothing happened.

    @Yuriy-Ney-0
    It is not clear his Omega2+ is able to boot or isn't able at all. (A boot log text would be much better than that video.;)

    I think it might be some power supply problem, some HW problem or might be also a bricked firmware of course if it always stops/sticks during boot.



  • @György-Farkas said in Omega 2+ boot stuck:

    It is not clear his Omega2+ is able to boot or isn't able at all. (A boot log text would be much better than that video.;)

    Here is tail of booting:

    [ 9.164280] urandom-seed: Seeding with /etc/urandom.seed
    [ 9.385431] procd: - early -
    [ 9.388468] procd: - watchdog -
    [ 10.116109] procd: - ubus -
    [ 10.325233] random: ubusd: uninitialized urandom read (4 bytes read, 17 bits)
    [ 10.334994] random: ubusd: uninitialized urandom read (4 bytes read, 17 bits)
    [ 10.344229] random: ubusd: uninitialized urandom read (4 bytes read, 17 bits)
    [ 10.353833] random: ubusd: uninitialized urandom read (4 bytes read, 17 bits)
    [ 10.363051] random: ubusd: uninitialized urandom read (4 bytes read, 17 bits)
    [ 10.372835] random: ubusd: uninitialized urandom read (4 bytes read, 17 bits)
    [ 10.382210] random: ubusd: uninitialized urandom read (4 bytes read, 17 bits)
    [ 10.391827] procd: - init -
    Please press Enter to activate this console.
    [ 81.248677] random: nonblocking pool is initialized

    After last string I hit Enter twice, but nothing happened. LED still flashing. WiFi doesm''t start.



  • I decide to reanimate my Omega 2+ and this topic too. I have 3 booting logs:

    Booting with Reset hold:

      / __ \___  (_)__  ___    / __ \__ _  ___ ___ ____ _                           
     / /_/ / _ \/ / _ \/ _ \  / /_/ /  ' \/ -_) _ `/ _ `/                           
     \____/_//_/_/\___/_//_/  \____/_/_/_/\__/\_, /\_,_/                            
     W H A T  W I L L  Y O U  I N V E N T ? /___/"                                  
                                                                                    
    Board: Onion Omega2 APSoC DRAM:  128 MB                                         
    relocate_code Pointer at: 87f60000                                              
    flash manufacture id: c2, device id 20 19                                       
    find flash: MX25L25635E                                                         
    *** Warning - bad CRC, using default environment                                
                                                                                    
    ============================================                                    
    Onion Omega2 UBoot Version: 4.3.0.3                                             
    --------------------------------------------                                    
    ASIC 7628_MP (Port5<->None)                                                     
    DRAM component: 1024 Mbits DDR, width 16                                        
    DRAM bus: 16 bit                                                                
    Total memory: 128 MBytes                                                        
    Flash component: SPI Flash                                                      
    Date:Oct 18 2016  Time:17:29:05                                                 
    ============================================                                    
    icache: sets:512, ways:4, linesz:32 ,total:65536                                
    dcache: sets:256, ways:4, linesz:32 ,total:32768                                
    CPU freq = 575 MHZ                                                              
    Estimated memory size = 128 Mbytes                                              
    Resetting MT7628 PHY.                                                           
    Initializing MT7688 GPIO system.                                                
                                                                                    
                                                                                    
    **************************************                                          
    * Hold Reset button for more options *                                          
    **************************************                                          
                                                                                    
                                                                                    
    You have 40 seconds left to select a menu option...                             
                                                                                    
                                                                                    
    Please select option:                                                           
       [ Enter ]: Boot Omega2.                                                      
       [ 0 ]: Start Web recovery mode.                                              
       [ 1 ]: Start command line mode.                                              
       [ 2 ]: Flash firmware from USB storage.                                      
                                                                                    
    Option [                                                                        
    Boot Linux from Flash.                                                          
    ## Booting image at bc050000 ...                                                
       Image Name:   MIPS LEDE Linux-4.4.46                                         
       Image Type:   MIPS Linux Kernel Image (lzma compressed)                      
       Data Size:    1311684 Bytes =  1.3 MB                                        
       Load Address: 80000000                                                       
       Entry Point:  80000000                                                       
       Verifying Checksum ... OK                                                    
       Uncompressing Kernel Image ... OK                                            
    No initrd                                                                       
    ## Transferring control to Linux (at address 80000000) ...                      
    ## Giving linux memsize in MB, 128                                              
                                                                                    
    Starting kernel ...                                                             
                                                                                    
    [    0.000000] Linux version 4.4.46 (root@2272a3272872) (gcc version 5.4.0 (LED7
    [    0.000000] Board has DDR2                                                   
    [    0.000000] Analog PMU set to hw control                                     
    [    0.000000] Digital PMU set to hw control                                    
    [    0.000000] SoC Type: MediaTek MT7688 ver:1 eco:2                            
    [    0.000000] bootconsole [early0] enabled                                     
    [    0.000000] CPU0 revision is: 00019655 (MIPS 24KEc)                          
    [    0.000000] MIPS: machine is Onion Omega2+                                   
    [    0.000000] Determined physical RAM map:                                     
    [    0.000000]  memory: 08000000 @ 00000000 (usable)                            
    [    0.000000] Initrd not found or empty - disabling initrd                     
    [    0.000000] Zone ranges:                                                     
    [    0.000000]   Normal   [mem 0x0000000000000000-0x0000000007ffffff]           
    [    0.000000] Movable zone start for each node                                 
    [    0.000000] Early memory node ranges                                         
    [    0.000000]   node   0: [mem 0x0000000000000000-0x0000000007ffffff]          
    [    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000007ffffff] 
    [    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.  
    [    0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bys
    [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pa2
    [    0.000000] Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jf2
    [    0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)              
    [    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)   
    [    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)     
    [    0.000000] Writing ErrCtl register=0007ad65                                 
    [    0.000000] Readback ErrCtl register=0007ad65                                
    [    0.000000] Memory: 125556K/131072K available (3025K kernel code, 142K rwdat)
    [    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1       
    [    0.000000] NR_IRQS:256                                                      
    [    0.000000] intc: using register map from devicetree                         
    [    0.000000] CPU Clock: 580MHz                                                
    [    0.000000] clocksource_probe: no matching clocksources found                
    [    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_s
    [    0.000010] sched_clock: 32 bits at 290MHz, resolution 3ns, wraps every 7405s
    [    0.007520] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216)          
    [    0.070042] pid_max: default: 32768 minimum: 301                             
    [    0.074637] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)      
    [    0.080977] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) 
    [    0.094351] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, ms
    [    0.104013] pinctrl core: initialized pinctrl subsystem                      
    [    0.109719] NET: Registered protocol family 16                               
    [    0.133600] mt7621_gpio 10000600.gpio: registering 32 gpios                  
    [    0.139144] mt7621_gpio 10000600.gpio: registering 32 gpios                  
    [    0.144575] mt7621_gpio 10000600.gpio: registering 32 gpios                  
    [    0.151097] i2c-mt7621 10000900.i2c: clock 100KHz, re-start not support      
    [    0.158634] clocksource: Switched to clocksource MIPS                        
    [    0.165153] NET: Registered protocol family 2                                
    [    0.170274] TCP established hash table entries: 1024 (order: 0, 4096 bytes)  
    [    0.176966] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)         
    [    0.183147] TCP: Hash tables configured (established 1024 bind 1024)         
    [    0.189349] UDP hash table entries: 256 (order: 0, 4096 bytes)               
    [    0.194952] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)          
    [    0.201295] NET: Registered protocol family 1                                
    [    0.211302] futex hash table entries: 256 (order: -1, 3072 bytes)            
    [    0.217256] Crashlog allocated RAM at address 0x3f00000                      
    [    0.237560] squashfs: version 4.0 (2009/01/31) Phillip Lougher               
    [    0.243215] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORI.
    [    0.255810] io scheduler noop registered                                     
    [    0.259611] io scheduler deadline registered (default)                       
    [    0.265401] rt2880-pinmux pinctrl: pin io18 already requested by pinctrl; cam
    [    0.274484] rt2880-pinmux pinctrl: pin-18 (10005000.pwm) status -22          
    [    0.280494] rt2880-pinmux pinctrl: could not request pin 18 (io18) from groux
    [    0.289896] mtk-pwm 10005000.pwm: Error applying setting, reverse things back
    [    0.297267] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled         
    [    0.304878] console [ttyS0] disabled                                         
    [    0.308312] 10000c00.uartlite: ttyS0 at MMIO 0x10000c00 (irq = 28, base_baudA
    [    0.317091] console [ttyS0] enabled                                          
    [    0.317091] console [ttyS0] enabled                                          
    [    0.324085] bootconsole [early0] disabled                                    
    [    0.324085] bootconsole [early0] disabled                                    
    [    0.332764] 10000d00.uart1: ttyS1 at MMIO 0x10000d00 (irq = 29, base_baud = A
    [    0.342281] 10000e00.uart2: ttyS2 at MMIO 0x10000e00 (irq = 30, base_baud = A
    [    0.352931] spi-mt7621 10000b00.spi: sys_freq: 193333333                     
    [    0.363006] m25p80 spi32766.0: using chunked io (size=31)                    
    [    0.368504] m25p80 spi32766.0: mx25l25635e (32768 Kbytes)                    
    [    0.374071] 4 ofpart partitions found on MTD device spi32766.0               
    [    0.379995] Creating 4 MTD partitions on "spi32766.0":                       
    [    0.385211] 0x000000000000-0x000000030000 : "u-boot"                         
    [    0.392037] 0x000000030000-0x000000040000 : "u-boot-env"                     
    [    0.399321] 0x000000040000-0x000000050000 : "factory"                        
    [    0.406268] 0x000000050000-0x000002000000 : "firmware"                       
    [    0.453999] 2 uimage-fw partitions found on MTD device firmware              
    [    0.460049] 0x000000050000-0x000000190404 : "kernel"                         
    [    0.466770] 0x000000190404-0x000002000000 : "rootfs"                         
    [    0.473698] mtd: device 5 (rootfs) set to be root filesystem                 
    [    0.479575] 1 squashfs-split partitions found on MTD device rootfs           
    [    0.485852] 0x0000006f0000-0x000002000000 : "rootfs_data"                    
    [    0.503084] rt3050-esw 10110000.esw: link changed 0x00                       
    [    0.510824] mtk_soc_eth 10100000.ethernet eth0: mediatek frame engine at 0xb5
    [    0.519500] i2c /dev entries driver                                          
    [    0.523639] mt7621_wdt 10000120.watchdog: Initialized                        
    [    0.530388] NET: Registered protocol family 10                               
    [    0.538970] NET: Registered protocol family 17                               
    [    0.543590] bridge: automatic filtering via arp/ip/ip6tables has been deprec.
    [    0.556431] 8021q: 802.1Q VLAN Support v1.8                                  
    [    0.567726] VFS: Mounted root (squashfs filesystem) readonly on device 31:5. 
    [    0.576011] Freeing unused kernel memory: 192K (803d0000 - 80400000)         
    [    1.568814] init: Console is alive                                           
    [    1.572482] init: - watchdog -                                               
    [    4.000459] kmodloader: loading kernel modules from /etc/modules-boot.d/*    
    [    4.153938] usbcore: registered new interface driver usbfs                   
    [    4.159676] usbcore: registered new interface driver hub                     
    [    4.165161] usbcore: registered new device driver usb                        
    [    4.176675] exFAT: Version 1.2.9                                             
    [    4.221688] SCSI subsystem initialized                                       
    [    4.232467] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver       
    [    4.240906] ehci-platform: EHCI generic platform driver                      
    [    4.256564] phy phy-10120000.usbphy.0: remote usb device wakeup disabled     
    [    4.263382] phy phy-10120000.usbphy.0: UTMI 16bit 30MHz                      
    [    4.268724] ehci-platform 101c0000.ehci: EHCI Host Controller                
    [    4.274589] ehci-platform 101c0000.ehci: new USB bus registered, assigned bu1
    [    4.282770] ehci-platform 101c0000.ehci: irq 26, io mem 0x101c0000           
    [    4.308675] ehci-platform 101c0000.ehci: USB 2.0 started, EHCI 1.00          
    [    4.316178] hub 1-0:1.0: USB hub found                                       
    [    4.320412] hub 1-0:1.0: 1 port detected                                     
    [    4.329490] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver           
    [    4.337429] ohci-platform: OHCI generic platform driver                      
    [    4.343087] ohci-platform 101c1000.ohci: Generic Platform OHCI controller    
    [    4.350060] ohci-platform 101c1000.ohci: new USB bus registered, assigned bu2
    [    4.358175] ohci-platform 101c1000.ohci: irq 26, io mem 0x101c1000           
    [    4.423803] hub 2-0:1.0: USB hub found                                       
    [    4.428044] hub 2-0:1.0: 1 port detected                                     
    [    4.445625] MTK MSDC device init.                                            
    [    4.488809] mtk-sd: MediaTek MT6575 MSDC Driver                              
    [    4.496847] sdhci: Secure Digital Host Controller Interface driver           
    [    4.503195] sdhci: Copyright(c) Pierre Ossman                                
    [    4.509127] sdhci-pltfm: SDHCI platform and OF driver helper                 
    [    4.519540] usbcore: registered new interface driver usb-storage             
    [    4.529246] kmodloader: done loading kernel modules from /etc/modules-boot.d*
    [    4.547081] init: - preinit -                                                
    [    5.390866] rt3050-esw 10110000.esw: link changed 0x00                       
    Press the [f] key and hit [enter] to enter failsafe mode                        
    Press the [1], [2], [3] or [4] key and hit [enter] to select the debug[    5.59)
     level                                                                          
    [    8.091304] jffs2: notice: (396) jffs2_build_xattr_subsystem: complete build.
    [    8.133363] mount_root: switching to jffs2 overlay                           
    [    8.171330] urandom-seed: Seeding with /etc/urandom.seed                     
    [    8.392821] procd: - early -                                                 
    [    8.395864] procd: - watchdog -                                              
    [    9.123889] procd: - ubus -                                                  
    [    9.333203] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits)
    [    9.342929] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits)
    [    9.352158] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits)
    [    9.361756] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits)
    [    9.370971] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits)
    [    9.380741] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits)
    [    9.390100] random: ubusd: uninitialized urandom read (4 bytes read, 16 bits)
    [    9.399689] procd: - init -                                                  
    Please press Enter to activate this console.                                    
    

    And failsafe mode:

       ____       _             ____                                                
      / __ \___  (_)__  ___    / __ \__ _  ___ ___ ____ _                           
     / /_/ / _ \/ / _ \/ _ \  / /_/ /  ' \/ -_) _ `/ _ `/                           
     \____/_//_/_/\___/_//_/  \____/_/_/_/\__/\_, /\_,_/                            
     W H A T  W I L L  Y O U  I N V E N T ? /___/"                                  
                                                                                    
    Board: Onion Omega2 APSoC DRAM:  128 MB                                         
    relocate_code Pointer at: 87f60000                                              
    flash manufacture id: c2, device id 20 19                                       
    find flash: MX25L25635E                                                         
    *** Warning - bad CRC, using default environment                                
                                                                                    
    ============================================                                    
    Onion Omega2 UBoot Version: 4.3.0.3                                             
    --------------------------------------------                                    
    ASIC 7628_MP (Port5<->None)                                                     
    DRAM component: 1024 Mbits DDR, width 16                                        
    DRAM bus: 16 bit                                                                
    Total memory: 128 MBytes                                                        
    Flash component: SPI Flash                                                      
    Date:Oct 18 2016  Time:17:29:05                                                 
    ============================================                                    
    icache: sets:512, ways:4, linesz:32 ,total:65536                                
    dcache: sets:256, ways:4, linesz:32 ,total:32768                                
    CPU freq = 575 MHZ                                                              
    Estimated memory size = 128 Mbytes                                              
    Resetting MT7628 PHY.                                                           
    Initializing MT7688 GPIO system.                                                
                                                                                    
                                                                                    
    **************************************                                          
    * Hold Reset button for more options *                                          
    **************************************                                          
                                                                                    
                                                                                    
                                                                                    
    Boot Linux from Flash NO RESET PRESSED.                                         
    ## Booting image at bc050000 ...                                                
       Image Name:   MIPS LEDE Linux-4.4.46                                         
       Image Type:   MIPS Linux Kernel Image (lzma compressed)                      
       Data Size:    1311684 Bytes =  1.3 MB                                        
       Load Address: 80000000                                                       
       Entry Point:  80000000                                                       
       Verifying Checksum ... OK                                                    
       Uncompressing Kernel Image ... OK                                            
    No initrd                                                                       
    ## Transferring control to Linux (at address 80000000) ...                      
    ## Giving linux memsize in MB, 128                                              488807] mtk-sd: MediaTek MT6575 MSDC Driver                              
    [    4.496822] sdhci: Secure Digital Host Controller Interface driver           
    [    4.503170] sdhci: Copyright(c) Pierre Ossman                                
    [    4.509110] sdhci-pltfm: SDHCI platform and OF driver helper                 
    [    4.519509] usbcore: registered new interface driver usb-storage             
    [    4.529177] kmodloader: done loading kernel modules from /etc/modules-boot.d*
    [    4.547003] init: - preinit -                                                
    [    5.045185] random: procd: uninitialized urandom read (4 bytes read, 9 bits )
    [    5.413481] rt3050-esw 10110000.esw: link changed 0x00                       
    Press the [f] key and hit [enter] to enter failsafe mode                        
    Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level    
    2- failsafe button reset was pressed -                                          
    - failsafe -                                                                    
    [    7.733446] random: dropbearkey: uninitialized urandom read (32 bytes read, )
    Generating key, [    7.744723] random: dropbearkey: uninitialized urandom read )
    this may take a while...                                                        
    [   10.290901] random: dropbearkey: uninitialized urandom read (32 bytes read, )
    Public key portion is:                                                          
    ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQCQ[   10.392926] random: dropbear: uninit)
    wtLKAd0vqEKM8TVs/Tps5LfRnEuEoc3ufvOaUyH/WNFwWtAlyKr16Y8rmHz1OxnhX5EZyh/jxD+od16)
    Fingerprint: md5 08:ad:47:6d:f2:55:46:20:ae:96:7f:8d:18:bb:99:07                
                                                                                    
                                                                                    
    BusyBox v1.26.2 () built-in shell (ash)                                         
                                                                                    
    ash: can't access tty; job control turned off                                   
         _________                                                                  
        /        /\      _    ___ ___  ___                                          
       /  LE    /  \    | |  | __|   \| __|                                         
      /    DE  /    \   | |__| _|| |) | _|                                          
     /________/  LE  \  |____|___|___/|___|                      lede-project.org   
     \        \   DE /                                                              
      \    LE  \    /  -----------------------------------------------------------  
       \  DE    \  /    Reboot (SNAPSHOT, r3273-a0888ec)                            
        \________\/    -----------------------------------------------------------  
                                                                                    
    ================= FAILSAFE MODE active ================                         
    special commands:                                                               
    * firstboot          reset settings to factory defaults                         
    * mount_root     mount root-partition with config files                         
                                                                                    
    after mount_root:                                                               
    * passwd                         change root's password                         
    * /etc/config               directory with config files                         
                                                                                    
    for more help see:                                                              
    http://wiki.openwrt.org/doc/howto/generic.failsafe                              
    =======================================================                         
                                                                                    
    root@(none):/# mount_root                                                       
    [   79.658665] random: nonblocking pool is initialized                          
    

    I can't flash new firmware from USB stick, because I can't make a choice in U-Boot menu. And Omega does not boot properly, WI-Fi does not start too.


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