WiFi stopped working

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?

 

iwconfig return

Code:

wlan0     no wireless extensions.

lo        no wireless extensions.

eth0      no wireless extensions.

usb0      no wireless extensions.

 

Follow this
http://www.udoo.org/docs-neo/Basic_Setup/Web_Control_Panel.html


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Udoo neo built in wifi doesn't support iwconfig command.
http://www.udoo.org/docs-neo/Wireless_Communication/Wifi.html


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The wifi list in the quick configuration section is empty. Cannot select any wifi.

 

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

 

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

 

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.

 

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.

 

Dear @necromancer, dear @matib12
I invite you to open a ticket, so we can better take care of your problem. We gotta exclude your Wi-Fi chip is burned.

 

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.


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did they offer you a replacement?

 

Yes they did.


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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.

 

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

 

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.