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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - blank screen after drm initialization - trekstor twin 10.1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104807">104807</a>
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<th>Summary</th>
<td>blank screen after drm initialization - trekstor twin 10.1
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>hexdump0815@googlemail.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=136985" name="attach_136985" title="boot output with drm.debug=0x1e with drm enabled">attachment 136985</a> <a href="attachment.cgi?id=136985&action=edit" title="boot output with drm.debug=0x1e with drm enabled">[details]</a></span>
boot output with drm.debug=0x1e with drm enabled
hello,
for quite some time i'm trying to get drm working on a trekstor twin 10.1, a
baytrail (Intel(R) Atom(TM) CPU Z3735F @ 1.33GHz) tablet, but during drm
initialization the screen goes blank. from the software side everything seems
to work well, as the xorg process is running and i can login blindly and see
the lxde session processes running - its just that the display does not show
anything. i got backlight control fully working via the dracut workaround from
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [CHV] Backlight init fails on Surface 3 if module load order is wrong"
href="show_bug.cgi?id=96571">https://bugs.freedesktop.org/show_bug.cgi?id=96571</a> - so the backlight is not
the problem. this is neither a duplicate of
<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [BYT dsi] Black screen on modesetting with Dell Venue 8 Pro (version with screen with MIPI panel index = 3)"
href="show_bug.cgi?id=82880">https://bugs.freedesktop.org/show_bug.cgi?id=82880</a> - which fixed a very similar
problem on my dell venue pro 8, but does not help on this trekstor tablet (i
tried it with hans de goede's tree from yesterday).
i'll attach a full dmesg output with drm.debug=0x1e from drm-tip as of now (git
hash 59275f1cec1d31adab39ddb6ab948519ac8ddffb) - once with drm (where i get the
blank screen) and once running with nomodeset (where everything is running fine
- but without drm, which i would like to get running). please let me know, if
you need any more information to help getting this sorted out. i can compile
kernels easily, have ssh access to the machine when the screen is blank etc.
and can run more commands for debugging if needed. the os is lubuntu 17.10 btw.
a lot of thanks in advance and best wishes
thomas</pre>
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