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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - vgaswitcheroo doesn't deal with powered off dGPU on resume"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65068#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - vgaswitcheroo doesn't deal with powered off dGPU on resume"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65068">bug 65068</a>
from <span class="vcard"><a class="email" href="mailto:agd5f@yahoo.com" title="Alex Deucher <agd5f@yahoo.com>"> <span class="fn">Alex Deucher</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=65068#c4">comment #4</a>)
<span class="quote">> I'm not sure if this has anything to do with this bug, but the PCI config
> space is all messed up when running on the integrated GPU:</span >
When you disable the GPU the hardware is physically powered off so you are
accessing non-existent registers. You need to power up the GPU using
vgaswitcheroo before loading/resuming the driver or access the config space
with lspci.</pre>
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