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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Haswell ULT max. resolution regression in KMS [HSW] [i915]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101245#c11">Comment # 11</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Haswell ULT max. resolution regression in KMS [HSW] [i915]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101245">bug 101245</a>
from <span class="vcard"><a class="email" href="mailto:gate03@landcroft.com" title="Michael Mounteney <gate03@landcroft.com>"> <span class="fn">Michael Mounteney</span></a>
</span></b>
<pre>Thank you for the correction on the xrandr commands. I confirm that your
settings work, and that the display is switched to 2560x1600.
I now have to find a way to incorporate the commands into my userspace start-up
sequence, since currently I run lightdm and have to run "DISPLAY=:0 konsole" as
root in another virtual console, to be able to enter the xrandr commands and
have them take effect.
The display is a cheap unbranded Korean one. It has a dual-link DVI-D
connector, an HDMI and a VGA. The Haswell-ULT computer is connected to the
HDMI. To the dual-link DVI-D is connected another Linux computer running
4.10.11 with this graphics adaptor:
<span class="quote">> 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Wrestler [Radeon HD 6250]</span >
and this displays at 2560x1600. I switch between the two using input selector
buttons on the monitor bezel.
To be honest, I don't fully understand Villes explanation but if the monitor
really is returning nonsense in its EDID then I suppose GIGO applies and this
bug should be closed. Maybe we need CONFIG_DISTRUST_CRAPPY_LYING_EDID or
similar.</pre>
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