Happened randomly 2 days after updating to Fedora 27. Environment detail: CPU: i3 GPU: GeForce GTX 750 + Intel Xeon E3-1200 v3/4th IGC /% rpm -qa xorg-x11-drv-nouveau xorg-x11-drv-nouveau-1.0.15-3.fc27.x86_64 ~/% uname -a Linux hanoli 4.14.8-300.fc27.x86_64 #1 SMP Wed Dec 20 19:00:18 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux dmesg: [271587.979780] nouveau 0000:01:00.0: gr: TRAP ch 2 [007f955000 Xorg[1473]] [271587.979789] nouveau 0000:01:00.0: gr: GPC0/TPC0/TEX: 80000041 [271587.979794] nouveau 0000:01:00.0: gr: GPC0/TPC1/TEX: 80000041 [271587.979797] nouveau 0000:01:00.0: gr: GPC0/TPC2/TEX: 80000041 [271587.979801] nouveau 0000:01:00.0: gr: GPC0/TPC3/TEX: 80000041 [271587.979804] nouveau 0000:01:00.0: gr: GPC0/TPC4/TEX: 80000041 [271587.979814] nouveau 0000:01:00.0: fifo: read fault at 0001af4000 engine 00 [GR] client 07 [GPC0/T1_2] reason 02 [PTE] on channel 2 [007f955000 Xorg[1473]] [271587.979819] nouveau 0000:01:00.0: fifo: channel 2: killed [271587.979821] nouveau 0000:01:00.0: fifo: runlist 0: scheduled for recovery [271587.979824] nouveau 0000:01:00.0: fifo: engine 0: scheduled for recovery [271587.979830] nouveau 0000:01:00.0: fifo: engine 5: scheduled for recovery [271587.979859] nouveau 0000:01:00.0: Xorg[1473]: channel 2 killed! [271638.386491] asynchronous wait on fence nouveau:Xorg[1473]:284f8b timed out [271688.050038] asynchronous wait on fence nouveau:Xorg[1473]:284f90 timed out [271737.201617] asynchronous wait on fence nouveau:Xorg[1473]:284fa2 timed out [271787.377169] asynchronous wait on fence nouveau:Xorg[1473]:284fa6 timed out