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Problem with usb stick



  • Yes. It says: "Cannot open line '/dev/tty.SLAB_USBtoUART' for R/W: Resource busy"



  • I restarted my laptop and omega, and tried command again. And I got this screen:
    Screen Shot 2015-12-04 at 18.37.45.png



  • @Milan-Vuckovic When you press ENTER nothing happens?



  • Exactly.



  • @Milan-Vuckovic Can you take a picture of your entire setup? How you connect the Omega to the dock, and how you connect the dock to the computer. And can you also make sure that the Omega is plugged all the way into the dock? Sometimes when the connection is loose, there might be some issue as well.



  • This post is deleted!


  • Untitled.png



  • @Milan-Vuckovic Seems like the Omega isn't plugged all the way into the dock. Can you plug it all the way in and see if that helps?



  • I can see it now. Thank you for your help.



  • @Milan-Vuckovic Awesome. Now try to plugin the USB stick and tell me the output that you see on the screen.



  • I can see the disk now, and I have successfully performed mount. And the serial console is now working too. Screen Shot 2015-12-04 at 19.32.33.png



  • @Milan-Vuckovic Awesome šŸ™‚ A picture is truly worth a thousand words!



  • Again, thank you for your help and I'm sorry for inconvenience. I was not really sure that omega should go all the way into the dock.



  • @Milan-Vuckovic That's what we're here for!



  • I have a problem with all USB devices. I've never been able to get any USB device to work. I figured it was a software/kernel issue and tried to work it out myself since I got the Omega about 2 weeks ago.

    Now that there's been a firmware update, I decided to give it another go. USB devices just don't connect. I tried to look up what the errors meant and read something about needing a Powered Hub. I hooked up one of those and there is no difference in the behavior.

    Below is the output of dmesg, when inserting 3 different USB storage devices. (USB v2 2gb, USB v3 16gb, and v2 card reader with a 4gb sdcard. All of these cards work fine in other PCs and on other development boards I own.

    Any ideas? I just tripple checked, the Omega is fully seated in the dock.

    USB 3 -

    [  231.990000] usb 1-1: new full-speed USB device number 6 using ehci-platform
    [  232.210000] usb 1-1: device descriptor read/64, error -71
    [  232.530000] usb 1-1: device descriptor read/64, error -71
    [  232.760000] usb 1-1: new full-speed USB device number 7 using ehci-platform
    [  232.980000] usb 1-1: device descriptor read/64, error -71
    [  233.300000] usb 1-1: device descriptor read/64, error -71
    [  233.530000] usb 1-1: new full-speed USB device number 8 using ehci-platform
    [  234.010000] usb 1-1: device not accepting address 8, error -71
    [  234.130000] usb 1-1: new full-speed USB device number 9 using ehci-platform
    [  234.610000] usb 1-1: device not accepting address 9, error -71
    [  234.610000] usb usb1-port1: unable to enumerate USB device
    

    USB 2 Card Reader w/ MicroSD Card

    [  501.280000] usb 1-1: new full-speed USB device number 14 using ehci-platform
    [  501.500000] usb 1-1: device descriptor read/64, error -71
    [  501.820000] usb 1-1: device descriptor read/64, error -71
    [  502.050000] usb 1-1: new full-speed USB device number 15 using ehci-platform
    [  502.270000] usb 1-1: device descriptor read/64, error -71
    [  502.590000] usb 1-1: device descriptor read/64, error -71
    [  502.820000] usb 1-1: new full-speed USB device number 16 using ehci-platform
    [  503.300000] usb 1-1: device not accepting address 16, error -71
    [  503.420000] usb 1-1: new full-speed USB device number 17 using ehci-platform
    [  503.900000] usb 1-1: device not accepting address 17, error -71
    [  503.900000] usb usb1-port1: unable to enumerate USB device
    

    USB 2 Drive, 2gb

    [  369.040000] usb 1-1: new full-speed USB device number 10 using ehci-platform
    [  369.260000] usb 1-1: device descriptor read/64, error -71
    [  369.580000] usb 1-1: device descriptor read/64, error -71
    [  369.810000] usb 1-1: new full-speed USB device number 11 using ehci-platform
    [  370.030000] usb 1-1: device descriptor read/64, error -71
    [  370.350000] usb 1-1: device descriptor read/64, error -71
    [  370.580000] usb 1-1: new full-speed USB device number 12 using ehci-platform
    [  371.060000] usb 1-1: device not accepting address 12, error -71
    [  371.180000] usb 1-1: new full-speed USB device number 13 using ehci-platform
    [  371.660000] usb 1-1: device not accepting address 13, error -71
    [  371.660000] usb usb1-port1: unable to enumerate USB device
    


  • Hi @Mike, I was doing some google search on this. Can you try to see if the following works:

    cd /sys/bus/pci/drivers/ath9k
    echo -n "0000:00:1d.7" > unbind
    


  • Hi @Boken-Lin.. I tried that an received the error "write error: No such device".

    I tried the same command in other USB related areas and didn't really make any progress. I don't know if it will help any, but here's 1,117 lines copied from my last terminal session. Taking shots in the dark for the most part..

    Here's the output of a few other commands..

    root@Omega-2101:/dev# lsusb
    Bus 001 Device 001: ID 1d6b:0002
    
    root@Omega-2101:/dev# df -h
    Filesystem                Size      Used Available Use% Mounted on
    rootfs                    8.2M    972.0K      7.2M  12% /
    /dev/root                 6.8M      6.8M         0 100% /rom
    tmpfs                    29.9M    456.0K     29.4M   1% /tmp
    /dev/mtdblock3            8.2M    972.0K      7.2M  12% /overlay
    overlayfs:/overlay        8.2M    972.0K      7.2M  12% /
    tmpfs                   512.0K         0    512.0K   0% /dev
    
    
    root@Omega-2101:/dev# ls
    bus                 mem                 mtd2ro              mtdblock0           network_throughput  shm
    console             memory_bandwidth    mtd3                mtdblock1           null                tty
    cpu_dma_latency     mtd0                mtd3ro              mtdblock2           port                ttyATH0
    full                mtd0ro              mtd4                mtdblock3           ppp                 ttyS0
    i2c-0               mtd1                mtd4ro              mtdblock4           ptmx                urandom
    kmsg                mtd1ro              mtd5                mtdblock5           pts                 watchdog
    log                 mtd2                mtd5ro              network_latency     random              zero
    


  • Hi @Mike, I did some more google searches, and apparently this fixes the problem (error -71) on Ubuntu. So please give it a try:

    echo Y > cat /sys/module/usbcore/parameters/old_scheme_first
    

    Please let me know if it fixes anything.



  • Hi @Boken-Lin,

    The command executed successfully, but after reboot the error still shows up.

    
    [    1.200000] 8021q: 802.1Q VLAN Support v1.8
    [    1.220000] VFS: Mounted root (squashfs filesystem) readonly on device 31:2.
    [    1.220000] Freeing unused kernel memory: 236K (80375000 - 803b0000)
    [    2.690000] init: Console is alive
    [    2.690000] init: - watchdog -
    [    5.220000] usbcore: registered new interface driver usbfs
    [    5.230000] usbcore: registered new interface driver hub
    [    5.230000] usbcore: registered new device driver usb
    [    5.290000] SCSI subsystem initialized
    [    5.310000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
    [    5.310000] ehci-platform: EHCI generic platform driver
    [    5.320000] ehci-platform ehci-platform: EHCI Host Controller
    [    5.320000] ehci-platform ehci-platform: new USB bus registered, assigned bus number 1
    [    5.330000] ehci-platform ehci-platform: irq 3, io mem 0x1b000000
    [    5.360000] ehci-platform ehci-platform: USB 2.0 started, EHCI 1.00
    [    5.360000] hub 1-0:1.0: USB hub found
    [    5.360000] hub 1-0:1.0: 1 port detected
    [    5.380000] usbcore: registered new interface driver usb-storage
    [    5.690000] usb 1-1: new full-speed USB device number 2 using ehci-platform
    [    5.720000] init: - preinit -
    [    6.290000] usb 1-1: device descriptor read/64, error -71
    [    6.470000] random: procd urandom read with 13 bits of entropy available
    [    6.620000] usb 1-1: device descriptor read/64, error -71
    [    6.850000] usb 1-1: new full-speed USB device number 3 using ehci-platform
    [    7.070000] usb 1-1: device descriptor read/64, error -71
    [    7.390000] usb 1-1: device descriptor read/64, error -71
    [    7.620000] usb 1-1: new full-speed USB device number 4 using ehci-platform
    [    8.100000] usb 1-1: device not accepting address 4, error -71
    [    8.220000] usb 1-1: new full-speed USB device number 5 using ehci-platform
    [    8.700000] usb 1-1: device not accepting address 5, error -71
    [    8.700000] usb usb1-port1: unable to enumerate USB device
    [    9.640000] mount_root: loading kmods from internal overlay
    [   10.020000] jffs2: notice: (338) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.
    [   10.030000] block: attempting to load /tmp/jffs_cfg/upper/etc/config/fstab
    [   10.040000] block: extroot: not configured
    [   10.110000] jffs2: notice: (334) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.
    [   10.300000] block: attempting to load /tmp/jffs_cfg/upper/etc/config/fstab
    [   10.310000] block: extroot: not configured
    [   10.310000] mount_root: switching to jffs2 overlay
    [   10.380000] procd: - early -
    [   10.380000] procd: - watchdog -
    [   11.180000] procd: - ubus -
    [   12.200000] procd: - init -
    [   13.700000] NET: Registered protocol family 10
    [   13.720000] ntfs: driver 2.1.31 [Flags: R/O MODULE].
    [   13.750000] ip6_tables: (C) 2000-2006 Netfilter Core Team
    [   13.780000] i2c /dev entries driver
    [   13.780000] Custom GPIO-based I2C driver version 0.1.1
    [   13.790000] i2c-gpio i2c-gpio.0: using pins 21 (SDA) and 20 (SCL)
    [   13.830000] Linux video capture interface: v2.00
    [   13.850000] hidraw: raw HID events driver (C) Jiri Kosina
    [   13.880000] usbcore: registered new interface driver cdc_acm
    [   13.890000] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
    [   13.900000] Loading modules backported from Linux version master-2015-03-09-0-g141f155
    [   13.900000] Backport generated by backports.git backports-20150129-0-gdd4a670
    [   13.920000] ip_tables: (C) 2000-2006 Netfilter Core Team
    [   13.940000] nf_conntrack version 0.5.0 (955 buckets, 3820 max)
    [   13.990000] usbcore: registered new interface driver ums-alauda
    [   14.000000] usbcore: registered new interface driver ums-cypress
    [   14.010000] usbcore: registered new interface driver ums-datafab
    [   14.010000] usbcore: registered new interface driver ums-freecom
    [   14.020000] usbcore: registered new interface driver ums-isd200
    [   14.030000] usbcore: registered new interface driver ums-jumpshot
    [   14.040000] usbcore: registered new interface driver ums-karma
    [   14.040000] usbcore: registered new interface driver ums-sddr09
    [   14.050000] usbcore: registered new interface driver ums-sddr55
    [   14.060000] usbcore: registered new interface driver ums-usbat
    [   14.070000] usbcore: registered new interface driver usbhid
    [   14.070000] usbhid: USB HID core driver
    [   14.080000] usbcore: registered new interface driver usblp
    [   14.090000] usbcore: registered new interface driver usbserial
    [   14.100000] usbcore: registered new interface driver usbserial_generic
    [   14.110000] usbserial: USB Serial support registered for generic
    [   14.120000] usbcore: registered new interface driver uvcvideo
    [   14.130000] USB Video Class driver (1.1.1)
    [   14.160000] xt_time: kernel timezone is -0000
    [   14.200000] cfg80211: Calling CRDA to update world regulatory domain
    [   14.220000] usbcore: registered new interface driver ch341
    [   14.220000] usbserial: USB Serial support registered for ch341-uart
    [   14.230000] usbcore: registered new interface driver cp210x
    [   14.230000] usbserial: USB Serial support registered for cp210x
    [   14.240000] usbcore: registered new interface driver ftdi_sio
    [   14.250000] usbserial: USB Serial support registered for FTDI USB Serial Device
    [   14.270000] cfg80211: World regulatory domain updated:
    [   14.270000] cfg80211:  DFS Master region: unset
    [   14.270000] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
    [   14.280000] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
    [   14.290000] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
    [   14.300000] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
    [   14.310000] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
    [   14.310000] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
    [   14.320000] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
    [   14.330000] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
    [   14.340000] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
    [   14.440000] usbcore: registered new interface driver pl2303
    [   14.450000] usbserial: USB Serial support registered for pl2303
    [   14.460000] PPP generic driver version 2.4.2
    [   14.470000] NET: Registered protocol family 24
    [   14.540000] ath: EEPROM regdomain: 0x0
    [   14.540000] ath: EEPROM indicates default country code should be used
    [   14.540000] ath: doing EEPROM country->regdmn map search
    [   14.540000] ath: country maps to regdmn code: 0x3a
    [   14.540000] ath: Country alpha2 being used: US
    [   14.540000] ath: Regpair used: 0x3a
    [   14.550000] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
    [   14.560000] ieee80211 phy0: Atheros AR9330 Rev:1 mem=0xb8100000, irq=2
    [   14.570000] cfg80211: Calling CRDA for country: US
    [   14.570000] cfg80211: Regulatory domain changed to country: US
    [   14.570000] cfg80211:  DFS Master region: FCC
    [   14.580000] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
    [   14.590000] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 3000 mBm), (N/A)
    [   14.600000] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 1700 mBm), (N/A)
    [   14.610000] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2300 mBm), (0 s)
    [   14.620000] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 3000 mBm), (N/A)
    [   14.620000] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
    [   29.510000] IPv6: ADDRCONF(NETDEV_UP): wlan0-1: link is not ready
    [   30.860000] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
    [   32.310000] wlan0: authenticate with ac:22:0b:e8:d9:90
    [   32.330000] wlan0: direct probe to ac:22:0b:e8:d9:90 (try 1/3)
    [   32.540000] wlan0: send auth to ac:22:0b:e8:d9:90 (try 2/3)
    [   32.550000] wlan0: authenticated
    [   32.560000] wlan0: associate with ac:22:0b:e8:d9:90 (try 1/3)
    [   32.560000] wlan0: RX AssocResp from ac:22:0b:e8:d9:90 (capab=0x411 status=0 aid=1)
    [   32.570000] wlan0: associated
    [   32.570000] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
    [   33.730000] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0-1: link becomes ready
    [   51.150000] random: nonblocking pool is initialized
    root@Omega-2101:~#
    
    


  • @Mike What happens if you execute the command, and plug in the USB key without rebooting?


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