nouveau graphics freeze when using KDE Plasma 5; PGR engine fault
Submitted by zoominee
Assigned to Nouveau Project
Description
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 https://bugs.kde.org/show_bug.cgi?id=352605
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...
Version: 13.0