at76c503a causes system freeze

Bug #120800 reported by NickeM
6
Affects Status Importance Assigned to Milestone
atmel-firmware (Ubuntu)
Expired
Undecided
Unassigned

Bug Description

Binary package hint: atmel-firmware

I have a Atmel usb wlan adapter:
Bus 002 Device 004: ID 069a:0321 Askey Computer Corp. Dynalink WLL013 / Compex WLU11A 802.11b Adapter
which is using the http://at76c503a.berlios.de/ driver.

Which has worked well until i upgraded to Feisty Fawn, i am currently on Gutsy Gibbon. The problems have been that the
system freezes when i have been running a cpu intesive program such as a batch job or a open gl game, nexuiz.

I notice something is wrong when the system halts for a 1 second... there could be a couple of halts, then the machine recovers but
after another minute...the system halts completely.

My suspicion is that the at76c503a seems to disconnect during high processor load and reconnected. The result of
a couple of reconnects --> system lock.

If i run the same programs and batch job with a regular network cable attached and the usb adapter unplugged, it all runs smoothly, so
i think it is a driver problem.

[ 171.258406] usb 2-2: reset full speed USB device using uhci_hcd and address 3
[ 171.406701] usb 2-2: device firmware changed
[ 171.406714] usb 2-2: USB disconnect, address 3
[ 171.408727] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-386/wireless/at76/at76c503.c: wlan0 disconnecting
[ 171.408735] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-386/wireless/at76/at76c503.c: at76_usb disconnected
[ 171.518172] usb 2-2: new full speed USB device using uhci_hcd and address 4
[ 171.671504] usb 2-2: configuration #1 chosen from 1 choice
[ 171.802265] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-386/wireless/at76/at76c503.c: firmware version 1.101.2 #84 (fcs_len 4)
[ 171.803264] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-386/wireless/at76/at76c503.c: device's MAC 00:90:96:50:3e:fe, regulatory domain MKK1 (Japan) (id 65)
[ 171.803357] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-386/wireless/at76/at76c503.c: registered wlan0
[ 173.131895] NET: Registered protocol family 17
[ 173.871997] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-386/wireless/at76/at76c503.c: 2522: assertion dev->istate == INIT failed
[ 175.352329] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-386/wireless/at76/at76c503.c: 1784: assertion dev->curr_bss == NULL failed

Revision history for this message
Martin Broers (banaan2) wrote :

I can confirm this one. I have had the 2.6.22-14 kernel. If I use the 64-bit version, my system freezes on startup. My system also freezes when the (USB)adapter tries to connect to my accespoint. Compiling and re-installing the Berlios driver has no effect. Installing the firmware neither. But, on the x86-version, it all works fine, even under a high CPU-usage. I have had crashes in the past, when I had 3 or 4 devede-programs creating simultaniously a dvd, but i don't think this had anything to do with the at76-chipset.

Revision history for this message
exactt (giesbert) wrote :

have you tried using the latest version as described here: https://bugs.launchpad.net/ubuntu/+source/linux-ubuntu-modules-2.6.24/+bug/152626 ?

Revision history for this message
NickeM (nicklas-marcusson) wrote :

I have tried Intrepid Ibex with kernel 2.6.27-9 but the at76_usb driver still freezes, however i have found a solution! :). It seems the 8.10 ships with 0.14beta1 at76 driver which is very old. The newer 0.17 works really well on 8.10 with a patch, see link.

http://guide.ubuntuforums.org/showthread.php?t=1029314

Revision history for this message
rusivi2 (rusivi2-deactivatedaccount) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. I noticed the version of Ubuntu your using is in End of Life status. More information may be found at: https://wiki.ubuntu.com/Releases As well, the package version your bugging is updated in Karmic. Please update via http://releases.ubuntu.com/9.10/ repost a detailed error report, and update the bug status. Thanks!

Changed in atmel-firmware (Ubuntu):
status: New → Incomplete
Revision history for this message
Launchpad Janitor (janitor) wrote :

[Expired for atmel-firmware (Ubuntu) because there has been no activity for 60 days.]

Changed in atmel-firmware (Ubuntu):
status: Incomplete → Expired
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