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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 - ctrl-alt-f2 + alt-f1 always crashes X server"
href="https://bugs.freedesktop.org/show_bug.cgi?id=109668">109668</a>
</td>
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<tr>
<th>Summary</th>
<td>ctrl-alt-f2 + alt-f1 always crashes X server
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<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>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jan.kratochvil@redhat.com
</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>Created <span class=""><a href="attachment.cgi?id=143399" name="attach_143399" title="kernel log before the crash with: drm.debug=14 log_buf_len=16M">attachment 143399</a> <a href="attachment.cgi?id=143399&action=edit" title="kernel log before the crash with: drm.debug=14 log_buf_len=16M">[details]</a></span>
kernel log before the crash with: drm.debug=14 log_buf_len=16M
00:02.0 0300: 8086:5917 (rev 07)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)
vendor_id : GenuineIntel
cpu family : 6
model : 142
model name : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
stepping : 10
microcode : 0x9a
Manufacturer: LENOVO
Product Name: 20KGS23S08
Version: ThinkPad X1 Carbon 6th
There is a suspend-resume bug in Fedora:
modeset(0): failed to set mode: No such file or directory | modeset(0): failed
to set mode: Invalid argument
<a href="https://bugzilla.redhat.com/show_bug.cgi?id=1662057">https://bugzilla.redhat.com/show_bug.cgi?id=1662057</a>
The suspend-resume bug happens only sometimes. But a very similar bug happens
just with always-reproducible ctrl-alt-f2 + alt-f1 (switch to text console and
back) so I am trying to debug that one first.
The problem happens in kernel DRM_IOCTL_MODE_ATOMIC, expecting i915.ko.
It is called by libdrm drmModeAtomicCommit().
kernel returns -22=EINVAL=Invalid argument
If one clears the error (the patch does this) X server no longer crashes but
the display remains black.
Tried these Fedora kernels but they all behave the same:
FAIL kernel-4.20.8-200.fc29.x86_64
FAIL kernel-5.0.0-0.rc6.git1.1.fc30.x86_64
FAIL kernel-4.18.18-200.fc28.x86_64
Tried drm-tip kernel but it did hang when it should ask for LUKS password on my
system. So I could not test drm-tip. It was built by kernel.spec as vanilla
from:
<a href="https://github.com/freedesktop/drm-tip.git">https://github.com/freedesktop/drm-tip.git</a>
7f6ace5f10a9d6c5d277b95e39f862eff87fdb45 = drm-tip
The failed DRM_IOCTL_MODE_ATOMIC data is (I haven't decoded it more):
atomic=0x7ffe3fceaa00 00 05 00 00 03 00 00 00 e0 7d ea ab 97 55 00 00 f0 c2 b1
ab 97 55 00 00 00 a9 33 ab 97 55 00 00 d0 33 d1 ab 97 55 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00
objs_ptr=0x5597abea7de0 1c 00 00 00 29 00 00 00 67 00 00 00
count_props_ptr=0x5597abea7de0 0a 00 00 00 02 00 00 00 01 00 00 00
props_ptr=0x5597ab33a900 13 00 00 00 10 00 00 00 0f 00 00 00 0e 00 00 00 0d 00
00 00 0c 00 00 00 0b 00 00 00 0a 00 00 00 09 00 00 00 08 00 00 00 15 00 00 00
14 00 00 00 13 00 00 00
prop_values_ptr=0x5597abd133d0 29 00 00 00 00 00 00 00 6b 00 00 00 00 00 00 00
70 08 00 00 00 00 00 00 00 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 70 08 00 00 00 00 00 00 00 0f 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 6e 00 00 00 00 00 00 00 01 00 00 00 00 00
00 00 29 00 00 00 00 00 00 00
user_data=(nil)
errno=4
ret=-22,errno=22</pre>
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