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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Unable to correctly set 3 monitor outputs with different resolution/clock on newer kernel/intel driver"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91900#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Unable to correctly set 3 monitor outputs with different resolution/clock on newer kernel/intel driver"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91900">bug 91900</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>The dmesgs don't seem to match your supposed xrandr calls very well. Looking at
intel-dmesg-4.0-3-vgaonly, I see it doing the following
1. enables pipe A -> HDMI-A-1, picks DPLL A, clock is 106500kHz
2. enables pipe B -> HDMI-A-2, picks DPLL B, clock is 108000kHz
3. tries to enable pipe C -> VGA-1, fails to find a DPLL even though the clock
is the same 108000kHz that DPLL B is already producing
I don't see what could be different between DPLL settings between pipe B an C,
both use the same PLL limits, and there should be no SSC/etc. things to worry
about. Unfortunately the driver is being extremely unhelpful and doesn't print
out any of the DPLL settings it's trying to match so I can't see what the
actual difference is.</pre>
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