<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Performance degradation after resume"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79806#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Performance degradation after resume"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79806">bug 79806</a>
from <span class="vcard"><a class="email" href="mailto:enyecz@gmail.com" title="Gabor Enyedi <enyecz@gmail.com>"> <span class="fn">Gabor Enyedi</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=79806#c3">comment #3</a>)
<span class="quote">> > Workaround: when resume, execute "echo auto >
> > /sys/class/drm/card0/device/power_dpm_force_performance_level".
>
> How did you do that? It gives me "echo: write error: Invalid argument" on
> kernel 3.15</span >
It simply works without any trick. It also works with stock kernel 3.13. Are
you sure that you have the same ATI card?
What I have found since I have posted the bug is that sometimes (very rarely)
this simple workaround is not enough. Now, I use the following:
echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level
echo battery > /sys/class/drm/card0/device/power_dpm_state
echo auto > /sys/class/drm/card0/device/power_dpm_force_performance_level
echo balanced > /sys/class/drm/card0/device/power_dpm_state</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>