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<body><span class="vcard"><a class="email" href="mailto:dimitry@cos.flag.org" title="Innocent Bystander <dimitry@cos.flag.org>"> <span class="fn">Innocent Bystander</span></a>
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<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [i915][BYT] Blank screen on DSI panel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101205">bug 101205</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEEDINFO
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<td>REOPENED
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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [i915][BYT] Blank screen on DSI panel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101205#c23">Comment # 23</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [i915][BYT] Blank screen on DSI panel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101205">bug 101205</a>
from <span class="vcard"><a class="email" href="mailto:dimitry@cos.flag.org" title="Innocent Bystander <dimitry@cos.flag.org>"> <span class="fn">Innocent Bystander</span></a>
</span></b>
<pre>(In reply to russianneuromancer from <a href="show_bug.cgi?id=101205#c22">comment #22</a>)
<span class="quote">> If you still have access to yours Dell Venue 8 Pro I advice you try Linux
> 4.12 on it: <a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED FIXED - [BYT dsi] Black screen on modesetting with Dell Venue 8 Pro (older firmware) on 3.16.x"
href="show_bug.cgi?id=82880#c38">https://bugs.freedesktop.org/show_bug.cgi?id=82880#c38</a></span >
Doesn't work for me.
At the time when I was planning to use DV8P I was able to get around 20 units
working and had 4 duds (screen turned blank as soon as i915 loaded). This was
with kernel 4.2.8.
By "working" I mean I had a picture, but no backlight control with the
backlight being stuck at 100% (which suited me).
When I switched to the Pipo units, I started using drm-tip at commit
62b63dcce03c09d31c1f297af4b6245a5159d923 of 2017-05-16, which also includes the
patch you've mentioned.
So, I just grabbed a working (good) and non-working (fail) DV8P units and
loaded the above kernel onto them and both units go blank as soon as i915
loads. I do have control of the backlight now. But no picture.
I will upload logs and VBTs for both. The funny thing is that the unit that
used work with 4.2.8 is also missing MIPI sequences in VBT.</pre>
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