Nvidia GPU invariably "ON" when resuming from suspend to RAM

Bumblebee-Project / bbswitch

Disable discrete graphics (currently nvidia only)

GNU General Public License v2.0

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Nvidia GPU invariably "ON" when resuming from suspend to RAM #105

Closed akien-mga closed 9 years ago

akien-mga commented 9 years ago

bbswitch works fine after booting with kernel 3.19.0 and nvidia 346.35, but there seems to be an issue when resuming the laptop after it was in sleep mode (a.k.a. suspend to RAM).

The discrete GPU seems to be ON and can't be switched OFF, as if a process was using it:

# tee /proc/acpi/bbswitch <<<OFF
OFF
# cat /proc/acpi/bbswitch 
0000:01:00.0 ON

This is maybe not a bbswitch issue, but hopefully you can help me debug what causes this misbehaviour.

akien-mga commented 9 years ago

Note that this might be superseded by Bumblebee-Project/Bumblebee/issues/632, I close it for now and will eventually reopen it if the issue still exists once I've fixed my other major issues with kernel 3.19.0.