Nouveau - Nov 2015 - [Bug 92971] [GF110] KDE plasma locks randomly due to crash of nouveau driver

https://bugs.freedesktop.org/show_bug.cgi?id=92971

--- Comment #8 from Philippe Condé <conde.philippe at skynet.be> ---
Hello,
I desactivated kscreenlocker which resolve the reactivate problem.

But the problem of corrupt screen when starting different programs remains and
is worst since the last zypper dup.

I found this error still related to nouveau when the two screen got corrupted

ov 20 22:37:07 hpprol2 kernel: audit: type=1105 audit(1448055427.213:154):
pid=2624 uid=1000 auid=1000 ses=1 msg='op=PAM:session_open
grantors=pam_limits,pam_unix,pam_umask,pam_systemd,pam_gnome_keyring,pam_
Nov 20 22:39:12 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: PBDMA0: 80000000 []
ch 30 [007e6ab000 kwin_x11[2097]] subc 0 mthd 0000 data 00000000
Nov 20 22:39:12 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: PBDMA0: 80040000 []
ch 30 [007e6ab000 kwin_x11[2097]] subc 0 mthd 0000 data 00000000
Nov 20 22:39:12 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: PBDMA0: 80000000 []
ch 30 [007e6ab000 kwin_x11[2097]] subc 0 mthd 0000 data 00000000
Nov 20 22:39:12 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: read fault at
0000000000 engine 07 [PFIFO] client 06 [PFIFO] reason 00 [PT_NOT_PRESENT] on
channel 30 [007e6ab000 kwin_x11[2097]]
Nov 20 22:39:12 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: fifo engine fault
on channel 30, recovering...


during each boot i see two error messages related to edac (at the end)
Nov 20 22:58:07 hpprol2 kernel: EDAC MC: Ver: 3.0.0
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3ca0
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3ca0
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3ca8
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3ca8
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3c71
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3c71
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3caa
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3caa
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cab
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cab
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cac
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cac
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cad
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cad
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cb8
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cb8
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cf4
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cf4
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cf6
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cf6
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cf5
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Seeking for: PCI ID 8086:3cf5
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Some needed devices are missing
Nov 20 22:58:07 hpprol2 kernel: EDAC sbridge: Couldn't find mci handler


when the screens are corrupted I can still  go to a console (VIA CTRL-ALT-F1)
and if I start top I see that the plasmeshell is running at 100%  and also
Xorg.

trying to kill plasmashell d lock the graphic screens

in the kdm.log I have a lot of these errors

nouveau: kernel rejected pushbuf: Device or resource busy
nouveau: ch0: krec 0 pushes 1 bufs 2 relocs 0
nouveau: ch0: buf 00000000 00000004 00000004 00000004 00000000
nouveau: ch0: buf 00000001 0000001c 00000002 00000000 00000002
nouveau: ch0: psh 00000000 0000006a04 0000006a84
nouveau:        0x20056080
nouveau:        0x000000cf
nouveau:        0x00000000
nouveau:        0x00000040
nouveau:        0x00000001
nouveau:        0x00000000
nouveau:        0x20046086
nouveau:        0x00000774
nouveau:        0x0000040d
nouveau:        0x00000000
nouveau:        0x06a20000
nouveau:        0x200460a0
nouveau:        0x00000000
nouveau:        0x00000000
nouveau:        0x00000774
nouveau:        0x0000040d
nouveau:        0x200160ab
nouveau:        0x00000003
nouveau:        0x20036160
nouveau:        0x00000004
nouveau:        0x000000cf
nouveau:        0x00d6d2d0
nouveau:        0x20046180
nouveau:        0x00000657
nouveau:        0x00000026
nouveau:        0x00000658
nouveau:        0x0000003d
nouveau:        0x20046180
nouveau:        0x0000013f
nouveau:        0x0000003d
nouveau:        0x00000658
nouveau:        0x0000003e
nouveau: kernel rejected pushbuf: Device or resource busy
nouveau: ch0: krec 0 pushes 1 bufs 2 relocs 0
nouveau: ch0: buf 00000000 00000004 00000004 00000004 00000000
nouveau: ch0: buf 00000001 0000001c 00000002 00000000 00000002
nouveau: ch0: psh 00000000 0000006a84 0000006af0
nouveau:        0x20056080
nouveau:        0x000000cf
nouveau:        0x00000000
nouveau:        0x00000040
nouveau:        0x00000001
etc...

Regards
Philippe

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