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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Baytrail MIPI/DSI Black screen when boot with HDMI connected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98467">98467</a>
</td>
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<th>Summary</th>
<td>Baytrail MIPI/DSI Black screen when boot with HDMI connected
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>XOrg git
</td>
</tr>
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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>
</tr>
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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>
<tr>
<th>Reporter</th>
<td>fabianpie@gmail.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=127581" name="attach_127581" title="dmesg with drm.debug=14 with and without error and i915_vbt">attachment 127581</a> <a href="attachment.cgi?id=127581&action=edit" title="dmesg with drm.debug=14 with and without error and i915_vbt">[details]</a></span>
dmesg with drm.debug=14 with and without error and i915_vbt
I'm testing a Baytrail device with mipi/dsi display and hdmi output.
When I boot without the hdmi connected the mipi/dsi works OK and after
connecting the hdmi both mipi/dsi and hdmi display graphics OK. (attached
dmesg-mipi-ok.txt)
If I boot with the hdmi connected it's selected by the bios as the default
display, Ubuntu only boots in hdmi and it works OK in this display but MIPI/DSI
is black. It's listed as connected by xrandr but I can't reset in any
way.(attached dmesg-mipi-error.txt)
I'm using Ubuntu 16.10 with kernel 4.8.4
Also attached /sys/kernel/debug/dri/0/i915_vbt in zip
BR.
Fabian</pre>
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