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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - AMDGPU Tonga only does 2560x1440 at 120hz, switching to 144hz causes display errors, same thing used to happen with fglrx."
href="https://bugs.freedesktop.org/show_bug.cgi?id=96868#c16">Comment # 16</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - AMDGPU Tonga only does 2560x1440 at 120hz, switching to 144hz causes display errors, same thing used to happen with fglrx."
href="https://bugs.freedesktop.org/show_bug.cgi?id=96868">bug 96868</a>
from <span class="vcard"><a class="email" href="mailto:jojonintendo@tutanota.com" title="Jonas <jojonintendo@tutanota.com>"> <span class="fn">Jonas</span></a>
</span></b>
<pre>(In reply to Andy Furniss from <a href="show_bug.cgi?id=96868#c15">comment #15</a>)
<span class="quote">> You should be able to do this eg. on my R9 285
>
> echo manual > /sys/class/drm/card0/device/power_dpm_force_performance_level
>
> cat /sys/class/drm/card0/device/pp_dpm_mclk
> 0: 150Mhz *
> 1: 1375Mhz
>
> echo 1 > /sys/class/drm/card0/device/pp_dpm_mclk
>
> cat /sys/class/drm/card0/device/pp_dpm_mclk
> 0: 150Mhz
> 1: 1375Mhz *
>
> Though it will undo if you change modes or go into DPMS.</span >
I can't apply "manual" mode: "invalid argument". I can't see pp_dpm_mclk clocks
either.</pre>
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