Comment 81 for bug 251252

After the upgrade to linux-backports-modules-2.6.24-21-generic 2.6.24-21.27, suspend and resume, network manager did not see any network devices. I could not start any new X processed from within X (although Ctrl+Alt+F1 and DISPLAY=:0 xterm workded), running ifconfig -a or ip -a hung, running sudo -s hung, trying to suspend again didn't work (blank text-mode screen with backlight on and a blinking cursor, also a blinking thinkpad moon led; I could abort the suspend by pressing a key).

dmesg didn't show anything suspicious or iwl3945-related, but /var/log/kern.log showed the dmesg buffer was filled with ACPI error messages and the beginning was truncated:

  Oct 12 03:08:37 platonas kernel: [27278.472517] eth1: deauthenticate(reason=3)

was the last message before suspend, and this is the first ones after:

  Oct 12 13:05:48 platonas kernel: [27278r GPE[ D], disabling event [20070126]
  Oct 12 13:05:48 platonas kernel: [ 0.964529] ACPI Error (evgpe-0705): No handler or method for GPE[ D], disabling event [20070126]
  Oct 12 13:05:48 platonas kernel: [ 0.964553] ACPI Error (evgpe-0705): No handler or method for GPE[ D], disabling event [20070126]
  ...

I've seen these errors before upgrading linux-backports-modules. I vaguely remember them being related to snd-hda-intel, however sound worked fine.

I still have my hack in place which prevents rmmod iwl3945 on suspend; I'll remove it and see if things get better.