BBGW: ERROR SW watchdog interrupt received! starting recovery.

[Stephane Charette]

When my BBGW boots up, the serial console gets flooded with this message every few seconds:

[ 1000.268493] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[ 1002.334742] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[ 1006.021489] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[ 1014.865474] wlcore: ERROR SW watchdog interrupt received! starting recovery.

Because the frequency of this message, the log files /var/log/daemon.log, syslog, kern.log and messages are hundreds of MB in size.

If I run "sudo ifconfig wlan0 down" then the problem goes away...but so does network access.  :)

Network connectivity is nearly useless, with > 90% packet loss.

--- 192.168.1.1 ping statistics ---

247 packets transmitted, 8 received, +99 errors, 96% packet loss, time 246985ms

Anyone know what this watchdog error message means?  Or how to fix wifi on the BBGW?

I'm using this build:  https://rcn-ee.com/rootfs/bb.org/testing/2016-10-30/seeed-iot/BBGW-blank-debian-8.6-seeed-iot-armhf-2016-10-30-4gb.img.xz

Stéphane

[Robert Nelson]

On Fri, Nov 4, 2016 at 10:22 AM, Stephane Charette
<stephane...@gmail.com> wrote:
>
> When my BBGW boots up, the serial console gets flooded with this message
> every few seconds:
>
> [ 1000.268493] wlcore: ERROR SW watchdog interrupt received! starting
> recovery.
> [ 1002.334742] wlcore: ERROR SW watchdog interrupt received! starting
> recovery.
> [ 1006.021489] wlcore: ERROR SW watchdog interrupt received! starting
> recovery.
> [ 1014.865474] wlcore: ERROR SW watchdog interrupt received! starting
> recovery.
>
> Because the frequency of this message, the log files /var/log/daemon.log,
> syslog, kern.log and messages are hundreds of MB in size.

Please download this kernel and give it a quick test:

https://www.dropbox.com/s/k5g8oyv1xmu1k50/linux-image-4.4.27-ti-r63.1_1cross_armhf.deb?dl=0

install it on the bbgw:

via:

sudo dpkg -i linux-image-4.4.27-ti-r63.1_1cross_armhf.deb
sudo reboot

Regards,

--
Robert Nelson
https://rcn-ee.com/

[Stéphane Charette]

On Fri, Nov 4, 2016 at 9:12 AM, Robert Nelson <robert...@gmail.com> wrote:

Please download this kernel and give it a quick test:

 

That kernel didn't change anything:

[   51.462966] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[   54.113033] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[   57.093679] wlcore: ERROR SW watchdog interrupt received! starting recovery.

uname -a[   59.130889] wlcore: ERROR SW watchdog interrupt received! starting recovery.

Linux beaglebone 4.4.27-ti-r63.1 #1 SMP Fri Nov 4 11:04:10 CDT 2016 armv7l GNU/Linux

debian@beaglebone:~$ [   62.100401] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[   68.142650] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[   73.159995] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[   74.058839] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[   75.106145] wlcore: ERROR SW watchdog interrupt received! starting recovery.

Ping also continues to show 90+% packet loss.  (The BBGW is about 3 feet away from my wireless router.)

--- 192.168.1.1 ping statistics ---

72 packets transmitted, 6 received, +12 errors, 91% packet loss, time 71098ms

rtt min/avg/max/mdev = 484.296/590.636/1011.617/188.588 ms, pipe 4

Stéphane

[Robert Nelson]

Well the fix i added was just to fix the flood of messages, looks like
it didn't really help.

I don't have a lot of knowledge of the internals of wl1835.

Any change with v4.9.x-ti?

cd /opt/scripts/tools/ ; git pull ; sudo ./update_kernel.sh --lts-4_9

You can revert back to v4.4.x-ti via:

cd /opt/scripts/tools/ ; git pull ; sudo ./update_kernel.sh --lts-4_4

[Stéphane Charette]

On Fri, Nov 4, 2016 at 10:59 AM, Robert Nelson <robert...@gmail.com> wrote:

Any change with v4.9.x-ti?

cd /opt/scripts/tools/ ; git pull ; sudo ./update_kernel.sh --lts-4_9

Unfortunately no, trying the 4.9 kernel didn't help:

[   47.550490] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[   49.182027] wlcore: ERROR SW watchdog interrupt received! starting recovery.

uname -a

Linux beaglebone 4.9.0-rc3-ti-r2 #1 SMP Wed Nov 2 18:32:20 UTC 2016 armv7l GNU/Linux

debian@beaglebone:~$ [   53.604197] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[   54.869237] wlcore: ERROR SW watchdog interrupt received! starting recovery.

[   58.621927] wlcore: ERROR SW watchdog interrupt received! starting recovery.

Ping still shows a loss of > 90% of packets.

--- 192.168.1.1 ping statistics ---

25 packets transmitted, 2 received, +3 errors, 92% packet loss, time 24507ms

Do these packages look like the right ones?

$ dpkg -l | egrep "wifi|wl"

ii  bb-wl18xx-firmware                   1.20161020-0rcnee1~bpo80+20161020+1           all          beagleboard.org wl18xx firmware

ii  firmware-realtek                     20160824-1                                    all          Binary firmware for Realtek wired/wifi/BT adapters

ii  seeed-wificonfig-installer           0.1.5-0rcnee8~bpo80+20160708+1                all          wificonfig installer for seeedstudio.com

ii  ti-wlconf                            8.6-git20151101-1.1~bpo80+20151105+1          armhf        wlconf for TI wireless drivers

ii  wifidog-gateway                      1.3.0-git20160426-0rcnee4~bpo80+20160505+1    armhf        The Wifidog gateway daemon

Is there something else I should be checking?

Stéphane