Mailinglist Archive: opensuse-kernel (66 mails)

["Rafael J. Wysocki" <rjw@xxxxxxx>]

On Wednesday, May 09, 2012, Cristian Rodríguez wrote:
> Hi:
>
> Since 3.4rc6 I am not able to "turn off" unused Nvidia "optimus" card, 
> either with 3rd party modules or vga_switchero.
>
> In rc5 it worked fine, now I get:
>
> a) with third party bbswitch module.
>
> bbswitch: Found integrated VGA device 0000:00:02.0: \_SB_.PCI0.GFX0
> bbswitch: Found discrete VGA device 0000:01:00.0: \_SB_.PCI0.PEG0.PEGP
> bbswitch: detected an Optimus _DSM function
> bbswitch: disabling discrete graphics
> bbswitch: Result of Optimus _DSM call: 11000059
> pci 0000:01:00.0: Refused to change power state, currently in D0
> ACPI: Device does not support D3
> bbswitch: Succesfully loaded. Discrete card 0000:01:00.0 is on
>
> Ok, third party module may be buggy and I don't expect anyone here to 
> support it, so I went to try kernel vga_switchero..
>
> VGA switcheroo: switched nouveau off
> [drm] nouveau 0000:01:00.0: Disabling display...
> [drm] nouveau 0000:01:00.0: Disabling fbcon...
> [drm] nouveau 0000:01:00.0: Unpinning framebuffer(s)...
> [drm] nouveau 0000:01:00.0: Evicting buffers...
> [drm] nouveau 0000:01:00.0: Idling channels...
> [drm] nouveau 0000:01:00.0: Suspending GPU objects...
> [drm] nouveau 0000:01:00.0: And we're gone!
> ACPI: Device does not support D3
>
> But device DOES support D3 states or at least it did in rc5..
>
> The ill effec of this change is that now the video card fan is running 
> almost all the time.
>
> Is this a side effect of 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=1cc0c998fdf2cb665d625fb565a0d6db5c81c639
>  
> ?

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