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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BDW Regression] blank screen on eDP with 38aecea0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76711#c28">Comment # 28</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BDW Regression] blank screen on eDP with 38aecea0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76711">bug 76711</a>
from <span class="vcard"><a class="email" href="mailto:przanoni@gmail.com" title="Paulo Zanoni <przanoni@gmail.com>"> <span class="fn">Paulo Zanoni</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=76711#c21">comment #21</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=97934" name="attach_97934" title="dmesg">attachment 97934</a> <a href="attachment.cgi?id=97934&action=edit" title="dmesg">[details]</a></span>
> dmesg
>
> On latest -nightly(7fa20daad840000b56924136d02a8d33265f29ca) reverted
> (38aecea0ccbb909d635619cba22f1891e589b434), then patched [PATCH 1/2]
> drm/i915: clean up VBT eDP link param decoding and [PATCH 2/2] drm/i915: use
> lane count and link rate from VBT as minimums for eDP, 3200x1800 eDP still
> shows blackscreen. Please check the dmesg with "drm.debug=0xe". Thanks.
>
> [root@x-bdw07 tests]# xrandr
> Screen 0: minimum 8 x 8, current 3200 x 1800, maximum 32767 x 32767
> eDP1 connected 3200x1800+0+0 (normal left inverted right x axis y axis)
> 293mm x 165mm
> 3200x1800 60.00*+ 51.60
> 2048x1536 60.00
> 1920x1440 60.00
> 1856x1392 60.01
> 1792x1344 60.01
> 1600x1200 60.00
> 1400x1050 59.98
> 1280x1024 60.02
> 1280x960 60.00
> 1024x768 60.00
> 800x600 60.32 56.25
> 640x480 59.94
> DP1 disconnected (normal left inverted right x axis y axis)
> HDMI1 disconnected (normal left inverted right x axis y axis)
> HDMI2 disconnected (normal left inverted right x axis y axis)
> VIRTUAL1 disconnected (normal left inverted right x axis y axis)</span >
Please also provide the output of intel_reg_dumper for this case.
Thanks,
Paulo</pre>
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