Created attachment 115843 [details] dmesg output Since installing Plasma 5, I'm getting a lot of lockups even with compositing disabled. As far as I can tell, the relevant part of dmesg is [ 2043.225653] nouveau E[ PFIFO][0000:08:00.0] read fault at 0x0000490000 [PTE] from GR/S\ CC on channel 0x007edf8000 [kwin_x11[2256]] [ 2043.225660] nouveau E[ PFIFO][0000:08:00.0] PGR engine fault on channel 12, recovering\ ... [ 2092.200410] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: SIGNATURE [ 2092.200416] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: ch 13 [vlc[4136]] subc 0 mthd 0x00\ 00 data 0x00000000 [ 2092.200430] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: SIGNATURE [ 2092.200433] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: ch 13 [vlc[4136]] subc 0 mthd 0x00\ 00 data 0x00000000 [ 2092.200446] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: GPPTR PBENTRY SIGNATURE [ 2092.200450] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: ch 13 [vlc[4136]] subc 0 mthd 0x00\ 00 data 0x00000000 [ 2092.200463] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: GPPTR SIGNATURE [ 2092.200465] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: ch 13 [vlc[4136]] subc 0 mthd 0x00\ 00 data 0x00000000 [ 2092.200478] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: SIGNATURE [ 2092.200481] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: ch 13 [vlc[4136]] subc 0 mthd 0x00\ 00 data 0x00000000 [ 2092.200494] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: SIGNATURE [ 2092.200496] nouveau E[ PFIFO][0000:08:00.0] PBDMA1: ch 13 [vlc[4136]] subc 0 mthd 0x00\ 00 data 0x00000000 [ 2092.200511] nouveau E[ PFIFO][0000:08:00.0] read fault at 0x0000000000 [PDE] from UNK0\ a/HOST on channel 0x007ecf9000 [unknown] [ 2092.200706] nouveau 0000:08:00.0: Direct firmware load for nouveau/nve4_fuc084 failed wi\ th error -2 [ 2092.200716] nouveau 0000:08:00.0: Direct firmware load for nouveau/nve4_fuc084d failed w\ ith error -2 [ 2092.200718] nouveau E[ PMSVLD][0000:08:00.0] unable to load firmware data [ 2092.200719] nouveau E[ PMSVLD][0000:08:00.0] init failed, -2 [ 2107.210428] nouveau E[vlc[4136]] failed to idle channel 0xcccc0001 [vlc[4136]] [ 2122.222450] nouveau E[vlc[4136]] failed to idle channel 0xcccc0001 [vlc[4136]] [ 2152.018150] nouveau 0000:08:00.0: Direct firmware load for nouveau/nve4_fuc084 failed wi\ th error -2 [ 2152.018161] nouveau 0000:08:00.0: Direct firmware load for nouveau/nve4_fuc084d failed w\ ith error -2 In this case vlc triggered it, but often it's some other process like Xorg.bin. Interestingly the machine was usable for a few minutes after this but then locked up. The display froze and ssh would prompt for a password but hang before the shell started. Rebooting with magic SysRq worked. dmesg output attached. Let me know what else I can do to collect debugging information. Hardware is # lspci | grep VGA 01:01.0 VGA compatible controller: ASPEED Technology, Inc. ASPEED Graphics Family (rev 10) 08:00.0 VGA compatible controller: NVIDIA Corporation GK104 [GeForce GTX 680] (rev a1)
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