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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - MacBook Pro 5,1 with nVidia 9400m and 9600m, scrambled screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=58556#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - MacBook Pro 5,1 with nVidia 9400m and 9600m, scrambled screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=58556">bug 58556</a>
from <span class="vcard"><a class="email" href="mailto:MacGyver031@web.de" title="Joanand <MacGyver031@web.de>"> <span class="fn">Joanand</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=58556#c7">comment #7</a>)
<span class="quote">> Hi Joanand</span >
Hi Emil
<span class="quote">> "Worked" with our without acceleration ?</span >
With GPUPWR, the discrete (nVidia 9600M GT) was no longer available. And as
nouveau works with 9400 and acceleration, it worked with acceleration.
<span class="quote">> Did you had the chance to narrow down what caused the change (<3.4.9 vs
> 3.7.1) ? It may be due to nouveau, vgaswitcheroo and/or other kernel driver</span >
3.4.9 did not have a viable vgaswitcheroo, but 3.7+ did. GPUPWR did no longer
help, as vgaswiteroo reactivated 9600m. So the sole solution was to use the
nouveau driver without acceleration.
<span class="quote">>
> There has been a brief discussion what is the best way to handle this
> (passing nouveau params to specific card, disabling certain card etc.)
> although implementation may be far off ;(
>
> Meanwhile add a hack for your card by checking the PCI and returning early
> rather than initialising the card - not sure which location is better
> nouveau_drm_probe or nouveau_drm_load. Keep in mind to keep is symmetric
> (ie. handle the case in nouveau_drm_remove/nouveau_drm_unload)
>
> Your code will look something similar to
>
> if ((pdev->bus == xx) &&
> (pdev->dev == xx) &&
> (pdev->func == xx)) {
> return 0; // you can also try return -E*
> }
>
> Cheers
> Emil</span >
Thanks for these pointers. I will try this hack on 3.10.2. I will report if I
get any further.
BR
Joanand</pre>
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