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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [HSW] no modes bigger than 1080p in the parsed EDID for 4k TV on both HDMI/VGA"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67030#c38">Comment # 38</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [HSW] no modes bigger than 1080p in the parsed EDID for 4k TV on both HDMI/VGA"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67030">bug 67030</a>
from <span class="vcard"><a class="email" href="mailto:damien.lespiau@gmail.com" title="Damien Lespiau <damien.lespiau@gmail.com>"> <span class="fn">Damien Lespiau</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=83387" name="attach_83387" title="X server patch to look at the TMDS max frequency field from the EDID">attachment 83387</a> <a href="attachment.cgi?id=83387&action=edit" title="X server patch to look at the TMDS max frequency field from the EDID">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=67030&attachment=83387'>[review]</a>
X server patch to look at the TMDS max frequency field from the EDID
Hi,
With this additional patch to the xserver, I can now see the 4k modes with
xrandr. I cannot actually test the whole chain as I'm faking having the
monitor, but you'll hopefully be able to test it.
So you need in addition of the 2 kernel patches already mentioned:
- This patch to the X server
- The master branch of the DDX driver (a bug fixed in the UXA part of the
driver) <a href="http://cgit.freedesktop.org/xorg/driver/xf86-video-intel">http://cgit.freedesktop.org/xorg/driver/xf86-video-intel</a>. Or you can
just cherry-pick "uxa/display: Keep the EDID blob around for the lifetime of an
output"</pre>
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