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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Trying to set mode 3840x2160 at 60 Hz results in a crash"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95392#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Trying to set mode 3840x2160 at 60 Hz results in a crash"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95392">bug 95392</a>
from <span class="vcard"><a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> <span class="fn">Ville Syrjala</span></a>
</span></b>
<pre>[ 12.914535] [drm:intel_update_cdclk] Current CD clock rate: 450000 kHz
[ 91.861529] [drm:intel_dump_crtc_timings] crtc timings: 533280 3840 3848
3992 4000 2160 2214 2219 2222, type: 0x0 flags: 0x9
Your cdclk is too low for that mode. I have a branch which has the required
bits to adjust cdclk dynamically on SKL:
git://github.com/vsyrjala/linux.git skl_bxt_cdclk_part_2
Can you test with that branch?</pre>
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