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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Kernel Bug and X fails to start when using radeon.runpm=1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=71930#c14">Comment # 14</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Kernel Bug and X fails to start when using radeon.runpm=1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=71930">bug 71930</a>
from <span class="vcard"><a class="email" href="mailto:sotiris21papadimitriou@gmail.com" title="sotiris papadimitriou <sotiris21papadimitriou@gmail.com>"> <span class="fn">sotiris papadimitriou</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=71930#c13">comment #13</a>)
<span class="quote">> Same problem.
> My graphics cards:
> lspci | grep VGA
> 01:05.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI
> RS880M [Mobility Radeon HD 4225/4250]
> 02:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Park
> [Mobility Radeon HD 5430/5450/5470]
> If radeon.runpm=0 all o.k.
> If manually turning off the dGPU using switcheroo then freeze
>
> I'm use Ubuntu 14.04 with kernel 3.13.rc1</span ></pre>
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