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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 - i915 always chooses the alternate fixed display mode on the eDP"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105469">105469</a>
</td>
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<th>Summary</th>
<td>i915 always chooses the alternate fixed display mode on the eDP
</td>
</tr>
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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>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>
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<th>Reporter</th>
<td>rune@megahurts.dk
</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=138047" name="attach_138047" title="The content of /var/log/debug when booting with drm.debug=0xe">attachment 138047</a> <a href="attachment.cgi?id=138047&action=edit" title="The content of /var/log/debug when booting with drm.debug=0xe">[details]</a></span>
The content of /var/log/debug when booting with drm.debug=0xe
No matter what display mode you select with xrandr, the i915 driver will always
select the alternate fixes mode.
For me this means that the display will always run at 40Hz which is quite
annoying.
if you intel_edp_compare_alt_mode() to also compare 'vrefresh' then it is
possible to select both fixed_mode(60Hz)
(the fix is mentioned in <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - Inverted touchpad coasting possibly caused by desktop effects"
href="show_bug.cgi?id=103497">https://bugs.freedesktop.org/show_bug.cgi?id=103497</a>)
Then 60Hz will be selected all the time no matter what display mode is
selected.
Distro: Debian
Kernel: 4.15.4(custom)
Machine: HP ZBook 15 G4 Mobile Workstation.</pre>
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