Same happens regularly - dmesg contains loads of: [10046.802408] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x0000060d [10046.802417] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802420] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000176 [10046.802429] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802432] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x000003c9 [10046.802441] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802445] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000176 [10046.802453] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802457] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x000003ca [10046.802465] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802469] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000186 [10046.802515] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802519] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x0000041c [10046.802531] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802535] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000176 [10046.802544] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802547] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x0000041d [10046.802556] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802559] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000186 [10046.802568] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802571] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x0000046f [10046.802580] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802584] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000176 [10046.802593] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802596] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x00000470 [10046.802605] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802608] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000186 [10046.802617] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802621] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x000004c2 [10046.802630] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802633] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000176 [10046.802642] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802645] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x000004c3 [10046.802654] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802657] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000186 [10046.802667] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802670] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x00000515 [10046.802679] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802682] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000176 [10046.802691] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802694] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x00000516 [10046.802703] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802706] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000186 [10046.802715] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802719] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x00000568 [10046.802728] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802731] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000176 [10046.802740] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802743] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x00000569 [10046.802752] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802755] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000186 [10046.802764] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802767] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x000005bb [10046.802777] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802780] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000176 [10046.802789] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802792] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x000005bc [10046.802801] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802804] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000186 [10046.802813] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802817] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x00000000 [10046.802826] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802829] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000186 [10046.802838] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802841] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x0000060d [10046.802850] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802853] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000187 [10046.802863] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802866] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x000003c9 [10046.802875] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802878] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000187 [10046.802887] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802890] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x000003ca [10046.802899] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802902] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000197 [10046.802912] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802915] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x0000041c [10046.802924] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802927] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000187 [10046.802936] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802939] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x0000041d [10046.802948] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802951] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000197 [10046.802961] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802964] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x0000046f [10046.802973] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802976] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000187 [10046.802985] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.802988] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x00000470 [10046.802997] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803000] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000197 [10046.803009] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803013] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x000004c2 [10046.803022] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803025] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000187 [10046.803034] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803037] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x000004c3 [10046.803046] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803049] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000197 [10046.803058] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803062] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x00000515 [10046.803071] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803074] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000187 [10046.803083] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803086] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x00000516 [10046.803095] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803098] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000197 [10046.803107] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803110] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x00000568 [10046.803119] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803123] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000187 [10046.803132] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803135] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x00000569 [10046.803144] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803147] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000197 [10046.803156] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803159] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x000005bb [10046.803168] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803172] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000187 [10046.803181] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803184] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x000005bc [10046.803193] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803196] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000197 [10046.803205] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803208] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x00000000 [10046.803217] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803220] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000197 [10046.803230] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803233] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x0000060d [10046.803242] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803245] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x00000198 [10046.803254] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803257] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x000003c9 [10046.803266] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803269] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000198 [10046.803279] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803282] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x000003ca [10046.803291] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803294] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x000001a8 [10046.803303] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803306] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x0000041c [10046.803316] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803319] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000198 [10046.803328] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803331] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x0000041d [10046.803340] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803343] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x000001a8 [10046.803352] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803355] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x0000046f [10046.803365] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803368] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000198 [10046.803377] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803380] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x00000470 [10046.803389] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803392] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x000001a8 [10046.803401] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803404] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0600 data 0x000004c2 [10046.803413] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803416] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0604 data 0x00000198 [10046.803425] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803428] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x0608 data 0x000004c3 [10046.803437] nouveau E[ PGRAPH][0000:01:00.0] ILLEGAL_MTHD ILLEGAL_CLASS [10046.803440] nouveau E[ PGRAPH][0000:01:00.0] ch 3 [0x001fb24000 Xorg[19658]] subc 2 class 0x0000 mthd 0x060c data 0x000001a8 [10046.806480] nouveau E[ PFB][0000:01:00.0] trapped write at 0x0000000000 on channel 0x0001fb24 [Xorg[19658]] PGRAPH/DISPATCH/GRCTX reason: DMAOBJ_LIMIT [10047.131817] nouveau E[ PFB][0000:01:00.0] trapped read at 0x0040990000 on channel 0x0001fb24 [Xorg[19658]] PGRAPH/TEXTURE/00 reason: PAGE_NOT_PRESENT
Not sure if I can provide any more useful information since it seems to happen randomly and independently of current keyboard/mouse interaction. The screen just froze without me sitting in front of the box. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1314405 Title: Screen freezes due to Xorg crashed SIGABRT and noveau error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1314405/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
