https://bugs.freedesktop.org/show_bug.cgi?id=91598
--- Comment #13 from David March <davidmarch...@gmail.com> --- Just wanted to add that this also can be replicated on KDE4 (I have since downgraded to get a usable system) as well (although far more rare). In this case it is a freeze (sometimes indefinite) but I do not notice any visible graphical corruption yet. The same (mostly - kwin is listed rather than plasmashell, of course messages as above are in the log like so: (Note reverse order - output generated using 'journalctl -r' -------- Sep 06 12:42:39 gentoot3400 kernel: nouveau E[ PGRAPH][0000:01:00.0] TRAP_PROP - TP 0 - e0c: 00000000, e18: 00000000, e1c: 000807f0, e20: 00002a00, e24: 00030000 Sep 06 12:42:39 gentoot3400 kernel: nouveau E[ PGRAPH][0000:01:00.0] TRAP_PROP - TP 0 - RT_FAULT - Address 0047a7f200 Sep 06 12:42:39 gentoot3400 kernel: nouveau E[ PFB][0000:01:00.0] trapped write at 0x0047a79000 on channel 0x0000f949 [kwin[1926]] PGRAPH/PROP/RT0 reason: PAGE_NOT_PRESENT Sep 06 12:42:39 gentoot3400 kernel: nouveau E[ PGRAPH][0000:01:00.0] ch 4 [0x000f949000 kwin[1926]] subc 3 class 0x8297 mthd 0x1b0c data 0x1000f010 Sep 06 12:42:39 gentoot3400 kernel: nouveau E[ PGRAPH][0000:01:00.0] TRAP_PROP - TP 0 - e0c: 00000000, e18: 00000000, e1c: 0000079e, e20: 00002a00, e24: 00030000 Sep 06 12:42:39 gentoot3400 kernel: nouveau E[ PGRAPH][0000:01:00.0] TRAP_PROP - TP 0 - RT_FAULT - Address 0047a79000 Sep 06 12:42:39 gentoot3400 kernel: nouveau E[kwin[1926]] validate: -22 Sep 06 12:42:39 gentoot3400 kernel: nouveau E[kwin[1926]] validating bo list Sep 06 12:42:39 gentoot3400 kernel: nouveau E[kwin[1926]] fail set_domain Sep 06 12:42:39 gentoot3400 kernel: nouveau E[kwin[1926]] validate: -22 --------- So the issue is not just really an issue related to Plasma 5 although it is worse on Plasma 5. Again it does seem to occur far less often with KDE4 though. New System Info: Linux gentoot3400 4.2.0-gentoo #1 SMP Mon Aug 31 17:07:28 EDT 2015 x86_64 Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz GenuineIntel GNU/Linux media-libs/mesa-11.0.0_rc2 x11-drivers/xf86-video-nouveau-1.0.11 kde-base/kwin-4.11.22(4) x11-base/xorg-server-1.17.2-r1 (with compositing ON) -- You are receiving this mail because: You are the assignee for the bug.
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