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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BYT] Blank screen on DSI display after drm loads on Teclast X80h tablet"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93799">93799</a>
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<th>Summary</th>
<td>[BYT] Blank screen on DSI display after drm loads on Teclast X80h tablet
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>XOrg git
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>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>
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<th>Reporter</th>
<td>laszlo.fiat@gmail.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<pre>I can see the boot logo, the grub menu, and first few lines as the kernel
loads, then the built-in screen of the tablet goes blank. Backlight is still
on, but nothing is on the display.
Steps to reproduce the issue: Boot up the tablet without HDMI connected.
How often does the steps listed above trigger the issue: Always
system architecture: x86_64
kernel version: 4.4.0-rc2-next-20151127+
Linux distribution: Debian Testing
Machine or mother board model: Teclast X80h Baytrail tablet
Display connector: DSI (built-in display)
I have one kernel version (4.3.0-rc5-next-20151012+), which actually works
correctly, none of the earlier or later versions I tried works.
I attach the dmesg for both working and non-working kernels.
I can provide more information if needed.</pre>
</div>
</p>
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