Hi, I have a fedora27 system with all updates applied and receiving the following kernel messages. When this happens, the Xwayland screen goes blank with just the mouse cursor in the center after entering the password at the lock screen that is displayed after some period of inactivity.
Is this a kernel bug? Driver problem?
Here is the video card info from lspci: 06:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 8400 GS Rev. 3] (rev a2) (prog-if 00 [VGA controller])
I've run abrt-cli and it doesn't show any recent crash. Notice there's a few minutes of time difference between the first two lines and the remaining ones, so not sure if it's related.
[Tue Dec 12 13:08:51 2017] nouveau 0000:06:00.0: fifo: DMA_PUSHER - ch 7 [Xwayland[8082]] get 0000000000 put 0000000000 ib_get 00000000 ib_put 00000002 state c0000000 (err: MEM_FAULT) push 00400040 [Tue Dec 12 13:08:51 2017] nouveau 0000:06:00.0: fb: trapped read at 0020010000 on channel 7 [3f4dc000 Xwayland[8082]] engine 05 [PFIFO] client 08 [PFIFO_READ] subclient 00 [PUSHBUF] reason 00000000 [PT_NOT_PRESENT] [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 5 mthd 0180 data beef0301 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 5 mthd 0184 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 5 mthd 0188 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 4 mthd 0180 data beef0301 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 4 mthd 0184 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 4 mthd 0188 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 4 mthd 018c data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 0180 data beef0301 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 0184 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 0188 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 018c data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 0190 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 0194 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 0198 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 019c data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01a0 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01a4 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01a8 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01ac data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01c0 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01c4 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01c8 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01cc data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01d0 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01d4 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01d8 data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fifo: CACHE_ERROR - ch 16 [systemd-logind[7733]] subc 3 mthd 01dc data beef0201 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: gr: TRAP_CCACHE 00000001 [FAULT] [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: gr: TRAP_CCACHE 000e0080 00000000 00000000 00000000 00000000 00000004 00000000 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: gr: 00200000 [] ch 16 [003e8b0000 systemd-logind[7733]] subc 3 class 8597 mthd 13bc data 00000054 [Tue Dec 12 13:29:36 2017] nouveau 0000:06:00.0: fb: trapped read at 002027df00 on channel 16 [3e8b0000 systemd-logind[7733]] engine 00 [PGRAPH] client 05 [CCACHE] subclient 00 [CB] reason 00000006 [NULL_DMAOBJ] [Tue Dec 12 13:29:38 2017] nouveau 0000:06:00.0: gr: PGRAPH TLB flush idle timeout fail [Tue Dec 12 13:29:38 2017] nouveau 0000:06:00.0: gr: PGRAPH_STATUS 00000403 [BUSY DISPATCH CCACHE_PREGEOM] [Tue Dec 12 13:29:38 2017] nouveau 0000:06:00.0: gr: PGRAPH_VSTATUS0: 00000008 [CCACHE] [Tue Dec 12 13:29:38 2017] nouveau 0000:06:00.0: gr: PGRAPH_VSTATUS1: 00000000 [] [Tue Dec 12 13:29:38 2017] nouveau 0000:06:00.0: gr: PGRAPH_VSTATUS2: 00000000 [] [Tue Dec 12 13:29:40 2017] nouveau 0000:06:00.0: gr: PGRAPH TLB flush idle timeout fail