Re: [PATCH 1/4] gpu/vga_switcheroo: add driver control power feature. (v3)

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On Tue, Jul 30, 2013 at 11:50 AM, Hohahiu <rakothedin@xxxxxxxxx> wrote:
> Hello, Dave!
>
> I have a hybrid muxless laptop with intel+radeon:
> #lspci | grep VGA
> 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
> Graphics Controller (rev 09)
> 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Cape
> Verde [Radeon HD 7700M Series]
>
> I have some questions related to this series of patches.
> When I power down discrete card by vgaswitcheroo, restart X server and turn
> on radeon card again, xrandr doesn't recognize my discrete card and only
> shows the intel one. Is this a bug or a feature of X server?
> And how would this behavior change with this patch?

Yes this with radeon support will save you having to power down things yourself,
so would just make it all happen dynamically and you'd never see it.

However if the machine dies on power down that could be fun to solve
with these patches as well.

Dave.
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