WiFi stopped working

Discussion in 'UDOO NEO' started by necromancer, Jan 17, 2016.

  1. necromancer

    necromancer New Member

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    Hi all,
    My neo stopped connecting to my local wifi today. I tried flashing a completely fresh udoobuntu, and the area where it usually shows the list of wifi available to connect to is empty.

    Any opinion?
     
  2. necromancer

    necromancer New Member

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    iwconfig return

    Code:
    wlan0     no wireless extensions.
    
    lo        no wireless extensions.
    
    eth0      no wireless extensions.
    
    usb0      no wireless extensions.
    
     
  3. sambrin

    sambrin New Member

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  4. sambrin

    sambrin New Member

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  5. necromancer

    necromancer New Member

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  6. necromancer

    necromancer New Member

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    The wifi icon on the status bar where list of wifi is displayed shows Wi-fi is disabled. Any idea?
     
  7. Andrea Rovai

    Andrea Rovai Well-Known Member

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    I guess that before your Wi-Fi was working, isn't it?
    Your Wi-Fi chip may be burned.
    Try to reflash, if the problem remains please open a ticket
     
  8. necromancer

    necromancer New Member

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    Correct, it was working before. And it still works. But the way to make it work is not normal. It doesn't work with RC1 at all. But i managed to make it work with beta5.
    First i need to connect to a hidden network and then i need to reboot. This will sometime work. If it doesn't i need to sudo ifconfig wlan0 down and sudo ifconfig wlan0 up multiple time with constant reboot in-between to make it work. It is very inconsistent.
     
  9. matib12

    matib12 New Member

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    Hi,
    I have a problem with WiFi which fits perfectly to the title of this thread. My WiFi stopped working but it was working before. I would say that it happened after re-flashing the SD with Ubuntu beta 1. I've done several tests on the WiFi.
    1. Configuration through Web doesn't show any available network.
    2. In /dev/ there is no wlan0 device.
    3. sudo rfkill list shows only hci0 Bluetooth device.
    4. sudo iw list doesn't give any result.
    5. I've tried different dtb file (imx6sx-udoo-neo-full-m4.dtb and imx6sx-udoo-neo-full.dtb) using uEnv in order to exclude any file corruption.
    6. Early u-boot log acquired through SerialDebug doesn't show any problem during dtb file upload.
    During tests I noticed that also Bluetooth isn't working.
    1. sudo hciconfig list gives the result as follows:
      Code:
      hci0:   Type: BR/EDR  Bus: UART
              BD Address: 00:00:00:00:00:00  ACL MTU: 0:0  SCO MTU: 0:0
              DOWN
              RX bytes:0 acl:0 sco:0 events:0 errors:0
              TX bytes:0 acl:0 sco:0 commands:0 errors:0
    2. sudo hciconfig hci0 down then up doesn't help and gives the message:
      Code:
      Can't init device hci0: Input/output error (5)
    3. After this error in dmesg appears:
      Code:
      [ 5182.839109] hci0 a8641000
      [ 5182.839124] (stc):  chnl_id list empty :4
      [ 5182.839133] (stk) : st_kim_start(stk) :ldisc_install = 1
      [ 5183.948179] (stk) :ldisc installation timeout(stk) :ldisc_install = 0
      [ 5184.948184] (stk) : timed out waiting for ldisc to be un-installed(stk) :ldisc_install = 1
      [ 5186.068237] (stk) :ldisc installation timeout(stk) :ldisc_install = 0
      [ 5187.068220] (stk) : timed out waiting for ldisc to be un-installed(stk) :ldisc_install = 1
      [ 5188.178294] (stk) :ldisc installation timeout(stk) :ldisc_install = 0
      [ 5189.178296] (stk) : timed out waiting for ldisc to be un-installed(stk) :ldisc_install = 1
      [ 5190.308312] (stk) :ldisc installation timeout(stk) :ldisc_install = 0
      [ 5191.308346] (stk) : timed out waiting for ldisc to be un-installed(stk) :ldisc_install = 1
      [ 5192.428333] (stk) :ldisc installation timeout(stk) :ldisc_install = 0
      [ 5193.428352] (stk) : timed out waiting for ldisc to be un-installed(stk) :ldisc_install = 1
      [ 5194.538405] (stk) :ldisc installation timeout(stk) :ldisc_install = 0
      [ 5195.538430] (stk) : timed out waiting for ldisc to be un-installed<3>[ 5195.546462] Bluetooth: st_register failed -22
    I'm looking for any hint how to confirm that the chip is not burnt.
     
  10. Andrea Rovai

    Andrea Rovai Well-Known Member

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  11. necromancer

    necromancer New Member

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    I ended up creating a ticket. Then had me go through a few more step to debug this issue and they concluded that my chip was burnt. I would suggest you start by opening a ticket and getting help from support.


    Sent from my iPhone using Tapatalk
     
  12. Vinz87

    Vinz87 UDOOer

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    did they offer you a replacement?
     
  13. necromancer

    necromancer New Member

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    Yes they did.


    Sent from my iPhone using Tapatalk
     
  14. matib12

    matib12 New Member

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    I confirm that the tests described in my previous post in this topic are sufficient to confirm that the BT/WLAN chip is broken.
     
  15. waltervl

    waltervl UDOOer

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    And? Did Udoo also confirm after you created the ticket? This forum is not for broken boards. But I suppose when you do your testa and add the results to your tocket it will help Udoo to confirm :)
     
    Andrea Rovai likes this.
  16. Andrea Rovai

    Andrea Rovai Well-Known Member

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    As @matib12 already knows, we told him to send us the board, so we can investigate the problem directly, but I ignore if he has already sent the board or not.
     

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