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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Resolution max problem since kernel 4.13"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104292">104292</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Resolution max problem since kernel 4.13
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>fce.valeins@libertysurf.fr
</td>
</tr>
<tr>
<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>Since upgrading kernel 4.12 to 4.13 or 4.14 I have a screen resolution problem.
My computer is a ZOTAC ZBOX CI547 nano with a graphics card Intel Corporation
HD Graphics 620 (rev 02)
With kernel 4.12 I have a maximum resolution of 1920x1080
Here is the return of the xrandr command :
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
DP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis)
530mm x 300mm
1920x1080 60.00*+ 50.00 59.94
1920x1080i 60.00 50.00 59.94
1600x1200 60.00
1680x1050 59.88
1280x1024 60.02
1440x900 59.90
1280x960 60.00
1280x720 60.00 50.00 59.94
1152x720 59.97
1024x768 60.00
800x600 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 66.67 60.00 59.94
DP2 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
but with a 4.13 or 4.14 kernel I have 1152x720
Screen 0: minimum 8 x 8, current 1152 x 720, maximum 32767 x 32767
DP1 connected primary 1152x720+0+0 (normal left inverted right x axis y axis)
530mm x 300mm
1152x720 59.97*
1024x768 60.00
800x600 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 66.67 60.00 59.94
DP2 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
Here my Xorg log file for kernel 4.12.13-1-ARCH
<a href="https://pastebin.com/srjjir7R">https://pastebin.com/srjjir7R</a>
and here Xorg log file for kernel 4.14.4-1-ARCH
<a href="https://pastebin.com/QbbHbs7C">https://pastebin.com/QbbHbs7C</a>
the onlyd diffrence is
Kernel 4.14
[ 13.047] (II) intel(0): Using Kernel Mode Setting driver: i915, version
1.6.0 20170403
[ 13.283] (II) intel(0): switch to mode <a href="mailto:1920x1080@60.0">1920x1080@60.0</a> on DP1 using pipe 0,
position (0, 0), rotation normal, reflection none
Kernel 4.12
[ 12.253] (II) intel(0): Using Kernel Mode Setting driver: i915, version
1.6.0 20170818
[ 12.632] (II) intel(0): switch to mode <a href="mailto:1152x720@60.0">1152x720@60.0</a> on DP1 using pipe 0,
position (0, 0), rotation normal, reflection none
it's the same with 4.13 kernel
I have try to set custom mode with :
cvt 1920 1080
# 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120
-hsync +vsync
xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088
1120 -hsync +vsync
xrandr --addmode DP1 "1920x1080_60.00"
xrandr --output DP1 --mode "1920x1080_60.00"
xrandr: Configure crtc 0 failed
in dmesg and journalctl I have this error
[dim. déc. 10 14:45:11 2017] [drm:intel_dp_get_link_train_fallback_values
[i915]] *ERROR* Link Training Unsuccessful</pre>
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