Ubuntu
gnome-power-manager package

  1. Bug #148637
  2. Comment #17

Comment 17 for bug 148637

Revision history for this message
Christofer Bernander (christoferb) wrote : Re: [Gusty/ Heron Development] system crashes on ac power unless acpi=off, but runs on battery

Hi!

I am running Hardy Heron on an Acer Travelmate 4502WLMi, and am experiencing similar problems. The system will hang within seconds after Gnome login, unless acpi=off or acpi=ht is specified at boot time. I can run Gutsy with ACPI turned on without any problems.

When copying /proc/acpi in recovery mode, the system will stall completely when reading /proc/acpi/battery/BAT0/alarm (battery must then be removed in order for the computer to be turned off!). It will also stall on /proc/acpi/event, but resumes copying when the power button is pressed.

I have noticed that the path /proc/acpi/battery is not present on Gutsy, which initially made me think that the ACPI battery subsystem was the culprit. However, I have tried blacklisting the 'battery', 'ds2760_battery' and 'sbs' modules (which is confirmed by the path /proc/acpi/battery not showing up), but the system will crash nevertheless.

I have also tried removing the blacklisting for acer_acpi (which has been deprecated in Hardy in favor of acer-laptop) and instead blacklisted acer-laptop, but the problem persists.