Omega2 does not boot from a USB-to-TTL adapter



  • Hello.
    I need your help. I have a problem with my Omega2.
    I do not use the dock, but I use a powerful 3.35v 2A power supply
    I do everything according to the instructions: [https://docs.onion.io/omega2-docs/first-time-setup.html](link url)

    • I enter login and password
    • I choose a WiFi network and connect to it
    • I select "Install Console button" to upgrade Omega to the latest firmware and install the Console
      Omega2 connects to the network and starts downloading, but about 15% of the download stops and does not resume. I waited an hour, but nothing happened. I reloaded Omega2 and started everything from the beginning, but the situation was repeated again. I waited 2 hours ...
      After these attempts I tried to connect to Omega2 using USB-to-TTL adapter but Omega2 does not start and constantly reboots if a USB-to-TTL adapter is connected!
      Serial boot log:
       ____       _             ____
      / __ \___  (_)__  ___    / __ \__ _  ___ ___ ____ _
     / /_/ / _ \/ / _ \/ _ \  / /_/ /  ' \/ -_) _ `/ _ `/
     \____/_//_/_/\___/_//_/  \____/_/_/_/\__/\_, /\_,_/
     W H A T  W I L L  Y O U  I N V E N T ? /___/"
    
    Board: Onion Omega2 APSoC DRAM:  64 MB
    relocate_code Pointer at: 83f60000
    flash manufacture id: ef, device id 40 18
    find flash: W25Q128BV
    *** Warning - bad CRC, using default environment
    
    ============================================
    Onion Omega2 UBoot Version: 4.3.0.3
    --------------------------------------------
    ASIC 7628_MP (Port5<->None)
    DRAM component: 512 Mbits DDR, width 16
    DRAM bus: 16 bit
    Total memory: 64 MBytes
    Flash component: SPI Flash
    Date:Oct 18 2016  Time:17:30:55
    ============================================
    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 = 64 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-4.4.32
       Image Type:   MIPS Linux Kernel Image (lzma compressed)
       Data Size:    1345343 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, 64
    
    Starting kernel ...
    
    [    0.000000] Linux version 4.4.32 (root@2272a3272872) (gcc version 5.4.0 (LEDE GCC 5.4.0 r2292+1) ) #0 Wed Nov 23 00:21:47 2016
    [    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: 04000000 @ 00000000 (usable)
    [    0.000000] Initrd not found or empty - disabling initrd
    [    0.000000] Zone ranges:
    [    0.000000]   Normal   [mem 0x0000000000000000-0x0000000003ffffff]
    [    0.000000] Movable zone start for each node
    [    0.000000] Early memory node ranges
    [    0.000000]   node   0: [mem 0x0000000000000000-0x0000000003ffffff]
    [    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000003ffffff]
    [    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 bytes
    [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
    [    0.000000] Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jffs2
    [    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
    [    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
    [    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
    [    0.000000] Writing ErrCtl register=0001f091
    [    0.000000] Readback ErrCtl register=0001f091
    [    0.000000] Memory: 60516K/65536K available (3103K kernel code, 141K rwdata, 752K rodata, 156K init, 196K bss, 5020K reserved, 0K cma-reserved)
    [    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_idle_ns: 6590553264 ns
    [    0.000012] sched_clock: 32 bits at 290MHz, resolution 3ns, wraps every 7405115902ns
    [    0.007521] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216)
    [    0.070037] pid_max: default: 32768 minimum: 301
    [    0.074636] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
    [    0.080975] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
    [    0.094358] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
    [    0.104012] pinctrl core: initialized pinctrl subsystem
    [    0.109735] NET: Registered protocol family 16
    [    0.135412] mt7621_gpio 10000600.gpio: registering 32 gpios
    [    0.140887] mt7621_gpio 10000600.gpio: registering 32 gpios
    [    0.146374] mt7621_gpio 10000600.gpio: registering 32 gpios
    [    0.152920] i2c-mt7621 10000900.i2c: clock 100KHz, re-start not support
    [    0.160729] clocksource: Switched to clocksource MIPS
    [    0.167129] NET: Registered protocol family 2
    [    0.172258] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
    [    0.178950] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
    [    0.185129] TCP: Hash tables configured (established 1024 bind 1024)
    [    0.191329] UDP hash table entries: 256 (order: 0, 4096 bytes)
    [    0.196930] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
    [    0.203298] NET: Registered protocol family 1
    [    0.213633] futex hash table entries: 256 (order: -1, 3072 bytes)
    [    0.219556] Crashlog allocated RAM at address 0x3f00000
    [    0.239699] squashfs: version 4.0 (2009/01/31) Phillip Lougher
    [    0.245354] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
    [    0.257565] io scheduler noop registered
    [    0.261370] io scheduler deadline registered (default)
    [    0.267731] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
    [    0.275415] console [ttyS0] disabled
    [    0.278841] 10000c00.uartlite: ttyS0 at MMIO 0x10000c00 (irq = 28, base_baud = 2500000) is a 16550A
    [    0.287620] console [ttyS0] enabled
    [    0.287620] console [ttyS0] enabled
    [    0.294614] bootconsole [early0] disabled
    [    0.294614] bootconsole [early0] disabled
    [    0.303375] 10000d00.uart1: ttyS1 at MMIO 0x10000d00 (irq = 29, base_baud = 2500000) is a 16550A
    [    0.312964] 10000e00.uart2: ttyS2 at MMIO 0x10000e00 (irq = 30, base_baud = 2500000) is a 16550A
    [    0.323681] spi-mt7621 10000b00.spi: sys_freq: 193333333
    [    0.333732] m25p80 spi32766.0: using chunked io (size=31)
    [    0.339225] m25p80 spi32766.0: w25q128 (16384 Kbytes)
    [    0.344440] 4 ofpart partitions found on MTD device spi32766.0
    [    0.350351] Creating 4 MTD partitions on "spi32766.0":
    [    0.355581] 0x000000000000-0x000000030000 : "u-boot"
    [    0.362393] 0x000000030000-0x000000040000 : "u-boot-env"
    [    0.369608] 0x000000040000-0x000000050000 : "factory"
    [    0.376634] 0x000000050000-0x000002000000 : "firmware"
    [    0.381922] mtd: partition "firmware" extends beyond the end of device "spi32766.0" -- size truncated to 0xfb0000
    [    0.414463] 2 uimage-fw partitions found on MTD device firmware
    [    0.420495] 0x000000050000-0x00000019877f : "kernel"
    [    0.427207] 0x00000019877f-0x000001000000 : "rootfs"
    [    0.434106] mtd: device 5 (rootfs) set to be root filesystem
    [    0.439917] 1 squashfs-split partitions found on MTD device rootfs
    [    0.446255] 0x0000006b0000-0x000001000000 : "rootfs_data"
    [    0.463611] rt3050-esw 10110000.esw: link changed 0x00
    [    0.471266] mtk_soc_eth 10100000.ethernet eth0: mediatek frame engine at 0xb0100000, irq 5
    [    0.479870] i2c /dev entries driver
    [    0.484046] mt7621_wdt 10000120.watchdog: Initialized
    [    0.489405] MTK MSDC device init.
    [    0.530874] mtk-sd: MediaTek MT6575 MSDC Driver
    [    0.536902] NET: Registered protocol family 10
    [    0.545490] NET: Registered protocol family 17
    [    0.550089] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
    [    0.562945] 8021q: 802.1Q VLAN Support v1.8
    [    0.569431] mtk-linkit bootstrap: Version  :
    [    0.573932] mtk-linkit bootstrap: Revision :
    [    0.583033] VFS: Mounted root (squashfs filesystem) readonly on device 31:5.
    [    0.591107] Freeing unused kernel memory: 156K (803e9000 - 80410000)
    [    1.617388] init: Console is alive
    [    1.621149] init: - watchdog -
    [    4.046067] usbcore: registered new interface driver usbfs
    [    4.051804] usbcore: registered new interface driver hub
    [    4.057294] usbcore: registered new device driver usb
    [    4.068398] exFAT: Version 1.2.9
    [    4.109587] SCSI subsystem initialized
    [    4.120001] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
    [    4.128325] ehci-platform: EHCI generic platform driver
    [    4.144014] phy phy-10120000.usbphy.0: remote usb device wakeup disabled
    [    4.150829] phy phy-10120000.usbphy.0: UTMI 16bit 30MHz
    [    4.156156] ehci-platform 101c0000.ehci: EHCI Host Controller
    [    4.162036] ehci-platform 101c0000.ehci: new USB bus registered, assigned bus number 1
    [    4.170180] ehci-platform 101c0000.ehci: irq 26, io mem 0x101c0000
    [    4.190774] ehci-platform 101c0000.ehci: USB 2.0 started, EHCI 1.00
    [    4.198280] hub 1-0:1.0: USB hub found
    [    4.202517] hub 1-0:1.0: 1 port detected
    [    4.211275] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
    [    4.219117] ohci-platform: OHCI generic platform driver
    [    4.224762] ohci-platform 101c1000.ohci: Generic Platform OHCI controller
    [    4.231732] ohci-platform 101c1000.ohci: new USB bus registered, assigned bus number 2
    [    4.239850] ohci-platform 101c1000.ohci: irq 26, io mem 0x101c1000
    [    4.305929] hub 2-0:1.0: USB hub found
    [    4.310164] hub 2-0:1.0: 1 port detected
    [    4.318983] sdhci: Secure Digital Host Controller Interface driver
    [    4.325336] sdhci: Copyright(c) Pierre Ossman
    [    4.331336] sdhci-pltfm: SDHCI platform and OF driver helper
    [    4.341505] usbcore: registered new interface driver usb-storage
    [    4.358060] init: - preinit -
    [    4.683936] usb 1-1: new high-speed USB device number 2 using ehci-platform
    [    4.911479] usb-storage 1-1:1.0: USB Mass Storage device detected
    [    4.918149] random: procd: uninitialized urandom read (4 bytes read, 9 bits of entropy available)
    [    4.938920] scsi host0: usb-storage 1-1:1.0
    [    5.290917] 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
    [    5.943398] scsi 0:0:0:0: Direct-Access     UFD 2.0  Silicon-Power8G  PMAP PQ: 0 ANSI: 4
    [    5.955089] sd 0:0:0:0: [sda] 15124992 512-byte logical blocks: (7.74 GB/7.21 GiB)
    [    5.963679] sd 0:0:0:0: [sda] Write Protect is off
    [    5.969294] sd 0:0:0:0: [sda] No Caching mode page found
    [    5.974741] sd 0:0:0:0: [sda] Assuming drive cache: write through
    [    5.986823]  sda: sda1
    [    5.993429] sd 0:0:0:0: [sda] Attached SCSI removable disk
    [    6.634864] jffs2: notice: (407) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.
    [    6.652249] mount_root: switching to jffs2 overlay
    [    6.667849] urandom-seed: Seeding with /etc/urandom.seed
    [    6.760518] procd: - early -
    [    6.764456] procd: - watchdog -
    [    7.486466] procd: - ubus -
    [    7.691861] random: ubusd: uninitialized urandom read (4 bytes read, 24 bits of entropy available)
    [    7.701558] random: ubusd: uninitialized urandom read (4 bytes read, 24 bits of entropy available)
    [    7.710777] random: ubusd: uninitialized urandom read (4 bytes read, 24 bits of entropy available)
    [    7.720314] random: ubusd: uninitialized urandom read (4 bytes read, 24 bits of entropy available)
    [    7.729562] random: ubusd: uninitialized urandom read (4 bytes read, 24 bits of entropy available)
    [    7.739234] random: ubusd: uninitialized urandom read (4 bytes read, 24 bits of entropy available)
    [    7.748652] random: ubusd: uninitialized urandom read (4 bytes read, 24 bits of entropy available)
    [    7.758336] procd: - init -
    Please press Enter to activate this console.
    [    8.290014] ntfs: driver 2.1.32 [Flags: R/O MODULE].
    [    8.355403] ip6_tables: (C) 2000-2006 Netfilter Core Team
    [    8.378174] Ralink/MTK WiFi EEPROM API Build for MT7620.
    [    8.422727] WRTnode AP Driver version: 4.1.0.0
    [    8.495296] Linux video capture interface: v2.00
    [    8.538542] hidraw: raw HID events driver (C) Jiri Kosina
    [    8.581246] Bluetooth: Core ver 2.21
    [    8.584985] NET: Registered protocol family 31
    [    8.589489] Bluetooth: HCI device and connection manager initialized
    [    8.595982] Bluetooth: HCI socket layer initialized
    [    8.600948] Bluetooth: L2CAP socket layer initialized
    [    8.606118] Bluetooth: SCO socket layer initialized
    [    8.613523] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
    [    8.618924] Bluetooth: BNEP filters: protocol multicast
    [    8.624301] Bluetooth: BNEP socket layer initialized
    [    8.635824] usbcore: registered new interface driver btusb
    [    8.645261] usbcore: registered new interface driver cdc_acm
    [    8.651088] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
    [    8.662921] Bluetooth: HCI UART driver ver 2.3
    [    8.667443] Bluetooth: HCI UART protocol H4 registered
    [    8.672721] Bluetooth: HCI UART protocol BCSP registered
    [    8.682256] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
    [    8.688285] Bluetooth: HIDP socket layer initialized
    [    8.696511] ip_tables: (C) 2000-2006 Netfilter Core Team
    [    8.718367] nf_conntrack version 0.5.0 (948 buckets, 3792 max)
    [    8.747655] Bluetooth: RFCOMM TTY layer initialized
    [    8.752699] Bluetooth: RFCOMM socket layer initialized
    [    8.757953] Bluetooth: RFCOMM ver 1.11
    [    8.769341] spidev spi32766.1: buggy DT: spidev listed directly in DT
    [    8.775957] ------------[ cut here ]------------
    [    8.780655] WARNING: CPU: 0 PID: 496 at drivers/spi/spidev.c:719 init_module+0x4d33c/0x4ddec [spidev]()
    [    8.790190] Modules linked in: spidev(+) snd_usbmidi_lib slhc rfcomm nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack iptable_raw iptable_mangle iptable_filter ip_tables hidp hid_generic hci_uart crc_ccitt cdc_acm btusb btintel bnep bluetooth snd_soc_simple_card snd_soc_ralink_i2s snd_soc_wm8960 videobuf2_vmalloc videobuf2_memops videobuf2_core hid v4l2_common videodev evdev snd_soc_core ralink_gdma virt_dma mt76x8 ralink_eeprom_api ledtrig_oneshot ledtrig_heartbeat ledtrig_gpio ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_raw ip6table_mangle ip6table_filter ip6_tables x_tables msdos snd_pcm_dmaengine snd_compress snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_rawmidi snd_seq_device snd_hwdep snd input_core soundcore vfat fat ntfs autofs4 nls_utf8 nls_iso8859_1 nls_cp437 regmap_i2c dma_shared_buffer ecb cmac usb_storage sdhci_pltfm sdhci leds_gpio ohci_platform ohci_hcd ledtrig_transient ehci_platform ehci_hcd sd_mod scsi_mod gpio_button_hotplug ext4 jbd2 mbcache exfat usbcore nls_base usb_common crc16 cryptomgr aead crypto_null crc32c_generic crypto_hash
    [    8.894953] CPU: 0 PID: 496 Comm: kmodloader Not tainted 4.4.32 #0
    [    8.901230] Stack : 80380328 00000000 00000001 803d0000 839c6a80 803ccd83 80361c94 000001f0
              80413434 0000000d 0000001a 024000c0 80065e4c 8004aa78 80367190 803d0000
              00000003 0000000d 80365594 830f9b4c 80065e4c 800489e4 00000000 00000000
              00000001 00000000 00000000 00000000 00000000 00000000 00000000 00000000
              00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
              ...
    [    8.937373] Call Trace:
    [    8.939908] [<80065e4c>] module_sect_show+0x0/0x18
    [    8.944789] [<8004aa78>] vprintk_default+0x24/0x30
    [    8.949662] [<80065e4c>] module_sect_show+0x0/0x18
    [    8.954536] [<800489e4>] printk+0x2c/0x38
    [    8.958619] [<80025124>] warn_slowpath_common+0xa0/0xd0
    [    8.963942] [<8014956c>] dump_stack+0x14/0x28
    [    8.968361] [<80014574>] show_stack+0x50/0x84
    [    8.972792] [<80025124>] warn_slowpath_common+0xa0/0xd0
    [    8.978099] [<82d0433c>] init_module+0x4d33c/0x4ddec [spidev]
    [    8.983955] [<800251dc>] warn_slowpath_null+0x18/0x24
    [    8.989101] [<8020d2ac>] of_match_node+0x20/0x44
    [    8.993822] [<82d0433c>] init_module+0x4d33c/0x4ddec [spidev]
    [    8.999663] [<801bbe28>] devm_kfree+0x20/0x44
    [    9.004107] [<801dcfb4>] spi_drv_probe+0x3c/0x84
    [    9.008801] [<801b8958>] driver_probe_device+0x120/0x288
    [    9.014219] [<80089d34>] kstrdup+0x44/0x8c
    [    9.018407] [<801dceb4>] spi_match_device+0x38/0xa8
    [    9.023391] [<801b8b3c>] __driver_attach+0x7c/0xb4
    [    9.028268] [<801b6d60>] next_device+0x10/0x30
    [    9.032801] [<801b8ac0>] __driver_attach+0x0/0xb4
    [    9.037578] [<801b6e1c>] bus_for_each_dev+0x9c/0xac
    [    9.042552] [<80303efc>] klist_add_tail+0x24/0x50
    [    9.047335] [<801b6bf0>] bus_get+0x2c/0x50
    [    9.051526] [<801b8050>] bus_add_driver+0xec/0x20c
    [    9.056392] [<800ac89c>] exact_match+0x0/0x8
    [    9.060740] [<800acda4>] exact_lock+0x0/0x24
    [    9.065087] [<801b9254>] driver_register+0xa8/0xf8
    [    9.069952] [<82cb7000>] init_module+0x0/0xdc [spidev]
    [    9.075210] [<82cb7098>] init_module+0x98/0xdc [spidev]
    [    9.080514] [<80155138>] kasprintf+0x1c/0x28
    [    9.084875] [<80045400>] __wake_up+0x24/0x48
    [    9.089208] [<82cb7000>] init_module+0x0/0xdc [spidev]
    [    9.094455] [<8000d5c8>] do_one_initcall+0x1e8/0x214
    [    9.099503] [<82cb7000>] init_module+0x0/0xdc [spidev]
    [    9.104742] [<800a55d4>] kmem_cache_alloc+0x40/0xfc
    [    9.109716] [<80033ba8>] call_usermodehelper_setup+0x38/0xa8
    [    9.115498] [<80065e4c>] module_sect_show+0x0/0x18
    [    9.120378] [<8006706c>] do_init_module+0x74/0x1cc
    [    9.125262] [<8009d864>] __vunmap+0xf0/0x114
    [    9.129626] [<80068900>] load_module+0x16c0/0x1b68
    [    9.134506] [<80066438>] unknown_module_param_cb+0x0/0xac
    [    9.139987] [<8009dd58>] __vmalloc_node+0x34/0x40
    [    9.144793] [<80068e3c>] SyS_init_module+0x94/0x180
    [    9.149745] [<80068ed8>] SyS_init_module+0x130/0x180
    [    9.154822] [<8000655c>] syscall_common+0x30/0x54
    [    9.159595]
    [    9.161121] ---[ end trace d20801c1b57b89be ]---
    [    9.177212] usbcore: registered new interface driver ums-alauda
    [    9.186275] usbcore: registered new interface driver ums-cypress
    [    9.195454] usbcore: registered new interface driver ums-datafab
    [    9.204343] usbcore: registered new interface driver ums-freecom
    [    9.213460] usbcore: registered new interface driver ums-isd200
    [    9.222616] usbcore: registered new interface driver ums-jumpshot
    [    9.231652] usbcore: registered new interface driver ums-karma
    [    9.241346] usbcore: registered new interface driver ums-sddr09
    [    9.250317] usbcore: registered new interface driver ums-sddr55
    [    9.259758] usbcore: registered new interface driver ums-usbat
    [    9.271891] usbcore: registered new interface driver usbhid
    [    9.277554] usbhid: USB HID core driver
    [    9.285126] usbcore: registered new interface driver usblp
    [    9.298872] usbcore: registered new interface driver usbserial
    [    9.305004] usbcore: registered new interface driver usbserial_generic
    [    9.311781] usbserial: USB Serial support registered for generic
    [    9.330144] Driver for 1-wire Dallas network protocol.
    [    9.359504] xt_time: kernel timezone is -0000
    [    9.366237] usbcore: registered new interface driver ch341
    [    9.372021] usbserial: USB Serial support registered for ch341-uart
    [    9.380837] usbcore: registered new interface driver cp210x
    [    9.386617] usbserial: USB Serial support registered for cp210x
    [    9.396146] usbcore: registered new interface driver ftdi_sio
    [    9.402189] usbserial: USB Serial support registered for FTDI USB Serial Device
    [    9.424266] usbcore: registered new interface driver pl2303
    [    9.430036] usbserial: USB Serial support registered for pl2303
    [    9.441523] PPP generic driver version 2.4.2
    [    9.449046] NET: Registered protocol family 24
    [    9.467036] usbcore: registered new interface driver snd-usb-audio
    [    9.484207] usbcore: registered new interface driver uvcvideo
    [    9.490046] USB Video Class driver (1.1.1)
    [   10.070635] random: jshn: uninitialized urandom read (4 bytes read, 27 bits of entropy available)
    [   10.171111] random: ubusd: uninitialized urandom read (4 bytes read, 28 bits of entropy available)
    [   14.934696] EEPROM:Read from [factory] offset 0x0,length 0x400.
    
    
       ____       _             ____
      / __ \___  (_)__  ___    / __ \__ _  ___ ___ ____ _
     / /_/ / _ \/ / _ \/ _ \  / /_/ /  ' \/ -_) _ `/ _ `/
     \____/_//_/_/\___/_//_/  \____/_/_/_/\__/\_, /\_,_/
     W H A T  W I L L  Y O U  I N V E N T ? /___/"
    
    Board: Onion Omega2 APSoC DRAM:  64 MB
    relocate_code Pointer at: 83f60000
    flash manufacture id: ef, device id 40 18
    find flash: W25Q128BV
    *** Warning - bad CRC, using default environment
    ...
    ...
    Restarting...
    


  • @Igor-Silenock

    It happens exactly when Omega turns on the Wifi radio.
    There are lots of topics about this problem eg here by @Chris-Stratton.

    I do not use the dock, but I use a powerful 3.35v 2A power supply

    Theoretically - especially if that is a mobil charger and probably those are not measured values.
    Yes you have, especially if that is not a mobil charger and you have measured those values.

    Possible solution: thicker and as short as possible power wires, a capacitor (say 22-47 uF tantal or good Al elco) at the Omega's power input pins and good connections at those pins.

    Good luck!


    PS. you said

    Omega2 does not boot from a USB-to-TTL adapter

    That adapter provides a serial connection / serial terminal only.
    Omega - when no reset button pressed - does boot from an on board flash memory chip.



  • I raised the voltage to 3.4v and Omega2 started without any problems.
    Thank you.



  • @Igor-Silenock I have observed the same behavior with several Omegas2+. That is incomplete, halted boots when powered by 3.3V, then a successful boot when the power was increased to 3.4V. I did wonder if the digital meter on my bench power supply is accurate ... my VOM says it is, but in both cases this is measure of the least significant digit.


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