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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 - nouveau graphics freeze when using KDE Plasma 5; PGR engine fault"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92077">92077</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>nouveau graphics freeze when using KDE Plasma 5; PGR engine fault
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr>
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<th>Version</th>
<td>10.3
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>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>Drivers/DRI/nouveau
</td>
</tr>
<tr>
<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>gentoo@moin.fi
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr></table>
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<pre>I upgraded KDE to Plasma-workspaces version 5. (Gentoo system)
Now, sometimes when my system has been idle for a while, it appears
"unresponsive" when I come back (screen doesn't wake up on mouse, mouse pointer
doesn't work if I switch off screen sleep, no reaction to any keys, etc.). The
system doesn't crash, but the nouveau graphics output does, and I cannot reach
a console using the keyboard, either.
I found the below output in /var/log/messages (a number of instances of
observing the bug; ... indicates that I had to restart the system).
Versions used:
x11-drivers/xf86-video-nouveau-1.0.11
x11-base/xorg-server-1.16.4
media-libs/mesa-10.3.7-r1
x11-libs/libdrm-2.4.59
x11-base/xorg-drivers-1.16
Kernel: 4.0.5 (self-compiled)
I filed a bug against Plasma 5 but I'm not sure if it's their bug. See
<a href="https://bugs.kde.org/show_bug.cgi?id=352605">https://bugs.kde.org/show_bug.cgi?id=352605</a>
I also have an apitrace record of plasmashell, replaying which (like a mini
film) also freezes the nouveau. But it's a rather large file (1.4 GB) and
contains private photos.
>From /var/log/messages:
Sep 6 16:31:09 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] read fault
at 0x0004042000 [PTE] from GR/GPC0/T1_1 on channel 0x0
03f7af000 [plasmashell[6790]]
Sep 6 16:31:09 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] PGR engine
fault on channel 10, recovering...
Sep 6 16:33:20 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] read fault
at 0x0000023000 [PTE] from PBDMA0/HOST_CPU on channel
0x003fbe0000 [unknown]
[...]
Sep 7 23:30:25 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] write fault
at 0x0003d49000 [PTE] from GR/GPC0/PROP_0 on channel
0x003f8ef000 [plasmashell[19341]]
Sep 7 23:30:25 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] PGR engine
fault on channel 8, recovering...
[...]
Sep 8 23:21:29 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] write fault
at 0x0003e02000 [PTE] from GR/GPC0/PROP_0 on channel
0x003f8ef000 [plasmashell[4952]]
Sep 8 23:21:29 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] PGR engine
fault on channel 8, recovering...
[...]
Sep 10 02:00:03 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] read fault
at 0x0001740000 [PTE] from GR/GPC0/T1_0 on channel 0x0
03f8ef000 [plasmashell[4709]]
Sep 10 02:00:03 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] PGR engine
fault on channel 8, recovering...
[...]
Sep 11 03:07:57 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] read fault
at 0x0003508000 [PTE] from GR/GPC0/T1_0 on channel 0x0
03f84f000 [plasmashell[6720]]
Sep 11 03:07:57 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] PGR engine
fault on channel 9, recovering...
[...]
Sep 12 00:19:50 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] write fault
at 0x0003ef5000 [PTE] from GR/GPC0/PROP_0 on channel
0x003facd000 [plasmashell[20804]]
Sep 12 00:19:50 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] PGR engine
fault on channel 5, recovering...</pre>
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