Comment 17 for bug 37773

FWIW: I'm using Dapper with a desktop machine, with an Atheros-chipset PCI wireless card, using WEP.

# lsmod | grep ath
ath_pci 80540 0
ath_rate_sample 17160 1 ath_pci
wlan 144924 4 wlan_wep,ath_pci,ath_rate_sample
ath_hal 148816 3 ath_pci,ath_rate_sample

Using the most recent kernel and restricted modules packages (linux-image-2.6.15-23-686 and linux-restricted-modules-2.6.15-23-686) I get lockups as described above. Usually it happens within an hour or so of booting, and always during network usage.

However, using a slightly older installed kernel image (linux-image-2.6.15-19-386 and linux-restricted-modules-2.6.15-19-386) I DO NOT get the lockups. The only change between when I do and do not get lockups is selecting a different kernel at the GRUB boot menu.

So, I believe that whatever is causing the lockups is a recent change (between 2.6.15-19 and 2.6.15-23). Hopefully this allows you to locate the problem. I agree with the critical bug severity; if Dapper goes live with the current code, anyone using an Atheros chipset WiFi card will be subjected to random lockups.