Original report, including bisection: http://thread.gmane.org/gmane.linux.kernel.wireless.general/65397 Another report: https://bugzilla.redhat.com/show_bug.cgi?id=697157 Workaround: http://thread.gmane.org/gmane.linux.kernel.wireless.general/65397/focus=71460 Analysis: http://thread.gmane.org/gmane.linux.kernel.wireless.general/65397/focus=6411 http://thread.gmane.org/gmane.linux.kernel.wireless.general/71577/focus=71624 Seems to be ASPM related. Adrian Chadd wrote: | I think the problem on these laptops is that -disabling- the APSM bits | causes some systems to hang. | | That's what the commit earlier in the year did - it disabled those | bits by default. Later code then enabled those bits only on poweron, | and disabled them on suspend. My dirty patch just has them enabled by | default again as per the previous behaviour. Thanks to Adrian and others for their work so far tracking this down. https://bugzilla.kernel.org/show_bug.cgi?id=37082 might be the same bug.
First-Bad-Commit: 53bc7aa08b48e5cd745f986731cc7dc24eef2a9f
There is also patch-workoround available: http://marc.info/?l=linux-wireless&m=130768848626799&w=2
Created attachment 66002 [details] 0001-ath9k-skip-config_pci_powersave-quirks-if-PCIe-port-.patch Please test this patch. I plan to post it as fix for that bug. I'm looking for confirmation if it works.
Posted another 6 patches: http://thread.gmane.org/gmane.linux.kernel.wireless.general/73834
A patch referencing this bug report has been merged in Linux v3.1-rc1: commit d4930086bdd0c08a8b3a4d66a9c702297cb74a99 Author: Stanislaw Gruszka <sgruszka@redhat.com> Date: Fri Jul 29 15:59:08 2011 +0200 ath9k: skip ->config_pci_powersave() if PCIe port has ASPM disabled