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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - LG 31MU97 monitor native resolution is 4096x2160, but highest mode found is 3840x2160"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108081#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - LG 31MU97 monitor native resolution is 4096x2160, but highest mode found is 3840x2160"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108081">bug 108081</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 edid has the base block repeated over where the second extension block
should be. Maybe a problem with the ddc segment address handling.
Hmm. Looks like the monitor is hooked up via MST. I see we fail to set he
no_stop_bit flag on the remote i2c reads, which could explain the segment
address being reset by the sink back to 0 before we read the extension block,
and then we end up reading the base block instead. I'll cook up a patch for
that.
You could also test passing i915.enable_dp_mst=0 to the kernel cmdline to i915
not use MST.</pre>
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