All the kernel stak traces are in power-management code, which should not be tripping.
Note also the timestampes in this intersting sequence: Aug 30 21:46:14 blackspot kernel: [ 90.783374] nouveau E[ PFIFO][0000:01:06.0] DMA_PUSHER - ch 1 [Xorg[1247]] get 0x65725f64 put 0x000102c8 state 0xc0000000 (err: MEM_FAULT) push 0x00000000 Aug 30 21:46:27 blackspot kernel: [ 105.780011] nouveau E[Xorg[1247]] failed to idle channel 0xcccc0000 [Xorg[1247]] Aug 30 21:46:28 blackspot kernel: [ 105.780056] nouveau E[ PFIFO][0000:01:06.0] DMA_PUSHER - ch 1 [Xorg[1247]] get 0x000102c8 put 0x000102d0 state 0x80000000 (err: INVALID_CMD) push 0x00000000 Aug 30 21:46:42 blackspot kernel: [ 120.780015] nouveau E[Xorg[1247]] failed to idle channel 0xcccc0000 [Xorg[1247]] Aug 30 21:48:41 blackspot kernel: [ 240.160046] INFO: task kworker/1:2:64 blocked for more than 120 seconds. the DMA push, then *exactly* 15 seconds later, the idle channel, then exctly 15 seconds later, another, then exactly 120 seconds later, the deadlock warning. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1097178 Title: nouveau failed to idle channel 0xcccc0000 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-raring/+bug/1097178/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
