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

Bug ID: 92971 Summary: KDE plasma locks randomly due to crash of nouveau driver Product: DRI Version: XOrg git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/other Assignee: dri-devel@lists.freedesktop.org Reporter: conde.philippe@skynet.be

Created attachment 119714 --> https://bugs.freedesktop.org/attachment.cgi?id=119714&action=edit extract of journalctl with nouveau crash

Last opensuse tumbleweed version: I'm using the nouveau driver with the kernel 4.3.0-1-xen (geeko@buildhost) (gcc version 5.2.1 20151008 [gcc-5-branch revision 228597.

My hardware is a HP proliant ML350p Gen8 with an Nvidia quadro 4000 video card with 2 screens (DVI + DP1) using a extended layout;

I have some locks occurring randomly when - loading some programs (Yast, Xine; Shishen etc...) - or starting a video in the browser (seamonkey on www. youtube or news site (www.lesoir.be, www.lemonde.fr) - reactivating a session (lock occurs when moving mouse or pressing keyboard)

the desktop freezes or is bad redraw and locks thereafter.Keyboard is inactive and I must do a hard reset. Some time the hardware indicate a non maskable interrupt This lock occurs randomly since kernel 4.2

In journalctl I see a crash of the nouveau driver.

Here the output when locking by loading Yast: Nov 15 10:36:29 hpprol2 audit[25865]: USER_START pid=25865 uid=1000 auid=1000 ses=3 msg='op=PAM:session_open grantors=pam_limits,pam_unix,pam_umask,pam_systemd,pam_gnome_keyring,pam_env,pam_xauth acct="root" Nov 15 10:36:29 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: PBDMA0: 80000000 [] ch 30 [007e6ab000 y2controlcenter[25892]] subc 0 mthd 0000 data 00000000 Nov 15 10:36:29 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: PBDMA0: 80040000 [] ch 30 [007e6ab000 y2controlcenter[25892]] subc 0 mthd 0000 data 00000000 Nov 15 10:36:29 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: PBDMA0: 80000000 [] ch 30 [007e6ab000 y2controlcenter[25892]] subc 0 mthd 0000 data 00000000 Nov 15 10:36:29 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 y2controlcenter[25892]] Nov 15 10:36:29 hpprol2 kernel: nouveau 0000:0a:00.0: fifo: fifo engine fault on channel 30, recovering... Nov 15 10:36:37 hpprol2 kernel: nouveau 0000:0a:00.0: DRM: GPU lockup - switching to software fbcon

I'll attach a long extract of journalctl after a lock occuring when reactivating a session