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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - 2560x1440 @144Hz graphic glitches and bad refresh rate"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93826#c58">Comment # 58</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - 2560x1440 @144Hz graphic glitches and bad refresh rate"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93826">bug 93826</a>
from <span class="vcard"><a class="email" href="mailto:qqel@outlook.com" title="qqel@outlook.com">qqel@outlook.com</a>
</span></b>
<pre>(In reply to iuno from <a href="show_bug.cgi?id=93826#c55">comment #55</a>)
<span class="quote">> Make sure to raise the DC clock above the default value, e.g. to 625 MHz
> (value 62500)
>
> If you use amdgpu: in amdgpu_atombios.c adev->clock.default_dispclk
> If you use radeon: in atombios_crtc.c rdev->clock.default_dispclk
>
> That should fix the broken image. To fix flickering, set mclk to high (echo
> 1 > /sys/class/drm/card0/device/power_dpm_force_performance_level)</span >
Confirming that this fixed the issue! MG279Q, r9 290 with amdgpu. Didn't have
to touch the mclk.</pre>
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