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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 - No recognition of DVI-D monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108047">108047</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>No recognition of DVI-D monitor
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>Driver/nouveau
</td>
</tr>
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>wolle321@freenet.de
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=141717" name="attach_141717" title="vbios.rom">attachment 141717</a> <a href="attachment.cgi?id=141717&action=edit" title="vbios.rom">[details]</a></span>
vbios.rom
Hello,
I try to get my external monitor to work with my laptop. But there is no signal
at the DVI output. Internal LVDS-1 works like expected.
I tried
an other monitor,
an other DVI-(dualchannel)-cable,
HDMI output direct at the laptop.
Monitor(s) keep on saying "no signal".
Forcing kms video=DVI-D-1:e => DVI-D-1 on with 1024x786
Forcing kms video=DVI-D-1:1600x1200e =>
DVI-D-1 on 1600x1200 but my monitor has 1920x1200 native resolution
Forcing kms video=DVI-D-1:1920x1200e =>
DVI-D-1 on picture is 1920x1200 but monitor
reports 960x1200 and picture is pixelated
I'm on Ubuntu 18.04,
Device is a HP Elitebook8730w with docking station and DVI-D output.
As I saw, with the help of Ilia Mirkin from your team, there is no EDID data
reported in Xorg.log at DVI-D-1 (equal if forced kms or default boot)
There is a message "mxm: unmatched output device" in dmesg but it is also there
when boot with unplugged DVI monitor. Ilia adviced me to add vbios.rom, to
check this.
/sys/class/drm/card0-DVI-D-1/edid is empty
/sys/class/drm/card0-LVDS-1/edid has data
Adding dmesg and Xorg.log with plugged and unplugged DVI, both without kms
forcing.
Thank you, Wolfgang</pre>
</div>
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