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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [ILK/SNB/IVB/HSW DP] 1856x1392 and 1792x1344 modes can't light up"
href="https://bugs.freedesktop.org/show_bug.cgi?id=68643#c19">Comment # 19</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [ILK/SNB/IVB/HSW DP] 1856x1392 and 1792x1344 modes can't light up"
href="https://bugs.freedesktop.org/show_bug.cgi?id=68643">bug 68643</a>
from <span class="vcard"><a class="email" href="mailto:lei.a.liu@intel.com" title="liulei <lei.a.liu@intel.com>"> <span class="fn">liulei</span></a>
</span></b>
<pre>Notice that DMT v1.0 write:
+------------+----------------+----------+--------------+---------------+
| Pixel | Refresh Rate | DMT ID | STD | CVT |
| Format | | Codes |2 Byte Codes |3 Byte Codes |
+------------+----------------+----------+--------------+---------------+
|1856 x 1392 | 60 Hz | 41h | (C9, 40)h | n/a |
+------------+----------------+----------+--------------+---------------+
|1792 x 1344 | 60 Hz | 3Eh | (C1, 40)h | n/a |
+------------+----------------+----------+--------------+---------------+
This two modes is n/a in CVT table. Does this have some influence on display?
I ever did a test as below steps:
1. cvt 1856 1392 60(I get 8 display timing)
2. replace 1856x1392 display timing in drm display mode table which is
defined in drm_edid.c .
3. build kernel
4. 1856x1392 mode can be lighted up with the kernel.
1792x1344 mode is the same.</pre>
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