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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [NVE6] complete system freeze, PGRAPH engine fault on channel 2, SCHED_ERROR [ CTXSW_TIMEOUT ]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93629#c43">Comment # 43</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [NVE6] complete system freeze, PGRAPH engine fault on channel 2, SCHED_ERROR [ CTXSW_TIMEOUT ]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93629">bug 93629</a>
from <span class="vcard"><a class="email" href="mailto:bkorb@ntp.org" title="Bruce <bkorb@ntp.org>"> <span class="fn">Bruce</span></a>
</span></b>
<pre>"Me, too" Extract from /var/log/kern.log:
Jan 24 16:07:35 bach kernel: [28972.823404] nouveau 0000:01:00.0: gr: TRAP
ch 8 [007f6be000 chrome[2903]]
Jan 24 16:07:35 bach kernel: [28972.823428] nouveau 0000:01:00.0: gr:
GPC0/TPC0/MP trap: global 00000004 [MULTIPLE_WARP_ERRORS] warp 3f000d [OOR_REG]
Jan 24 16:07:35 bach kernel: [28972.823437] nouveau 0000:01:00.0: gr:
GPC0/TPC1/MP trap: global 00000004 [MULTIPLE_WARP_ERRORS] warp 3f000d [OOR_REG]
Jan 24 16:07:39 bach kernel: [28977.119555] nouveau 0000:01:00.0: fifo:
SCHED_ERROR 0a [CTXSW_TIMEOUT]
Jan 24 16:07:39 bach kernel: [28977.119564] nouveau 0000:01:00.0: fifo: gr
engine fault on channel 2, recovering...
The easiest way to reproduce is to leave the computer alone for a while and
more often than not, the KDE desktop will lock up. But it also locked while I
was actively using it about 1/2 hour ago.
I used to be able to ssh in and type "init 4 ; init 5" and successfully restart
KDE. Unfortunately, someone made SSH access tighter recently and I can no
longer do that ("Connection refused").
$ sr find /lib* /usr/lib* |grep -i nouveau|sed s/'^/ /'
/lib/modules/4.10.0-42-generic/kernel/drivers/gpu/drm/nouveau
/lib/modules/4.10.0-42-generic/kernel/drivers/gpu/drm/nouveau/nouveau.ko
/lib/modules/4.10.0-35-generic/kernel/drivers/gpu/drm/nouveau
/lib/modules/4.10.0-35-generic/kernel/drivers/gpu/drm/nouveau/nouveau.ko
/lib/modules/4.8.0-53-generic/kernel/drivers/gpu/drm/nouveau
/lib/modules/4.8.0-53-generic/kernel/drivers/gpu/drm/nouveau/nouveau.ko
/usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
/usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
/usr/lib/x86_64-linux-gnu/dri/nouveau_vieux_dri.so
/usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2.0.0
/usr/lib/xorg/modules/drivers/nouveau_drv.so
/usr/lib/i386-linux-gnu/libdrm_nouveau.so.2
/usr/lib/i386-linux-gnu/dri/nouveau_dri.so
/usr/lib/i386-linux-gnu/dri/nouveau_vieux_dri.so
/usr/lib/i386-linux-gnu/libdrm_nouveau.so.2.0.0
$ sed 's/^/ /' /etc/os-release
NAME="Linux Mint"
VERSION="18.2 (Sonya)"
ID=linuxmint
ID_LIKE=ubuntu
PRETTY_NAME="Linux Mint 18.2"
VERSION_ID="18.2"
HOME_URL="<a href="http://www.linuxmint.com/">http://www.linuxmint.com/</a>"
SUPPORT_URL="<a href="http://forums.linuxmint.com/">http://forums.linuxmint.com/</a>"
BUG_REPORT_URL="<a href="http://bugs.launchpad.net/linuxmint/">http://bugs.launchpad.net/linuxmint/</a>"
VERSION_CODENAME=sonya
UBUNTU_CODENAME=xenial</pre>
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