[Bug 98690] [SKL bisected] System freeze when starting X using kernel 4.9-rc1 or later

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98690

--- Comment #63 from bastian.beischer at rwth-aachen.de ---
Hey,

not sure whether this is the same bug but I can't start X with nouveau from
Linux 4.10.1, unless I pass nouveau.runpm=0.

The symptoms are the same as in this bug report, but I don't use Optimus for
this PC. I didn't have any problems with Linux 4.9.11.

Here's a relevant piece from dmesg:

[  245.346354] INFO: task kworker/2:2:258 blocked for more than 120 seconds.
[  245.346364]       Tainted: G          I     4.10.1-1-ARCH #1
[  245.346370] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[  245.346376] kworker/2:2     D    0   258      2 0x00000000
[  245.346382] Workqueue: pm pm_runtime_work
[  245.346383] Call Trace:
[  245.346388]  __schedule+0x22f/0x700
[  245.346389]  schedule+0x3d/0x90
[  245.346391]  rpm_resume+0x118/0x6f0
[  245.346393]  ? wake_atomic_t_function+0x60/0x60
[  245.346395]  ? pci_pm_runtime_resume+0xa0/0xa0
[  245.346397]  pm_runtime_forbid+0x4c/0x60
[  245.346420]  nouveau_pmops_runtime_suspend+0xcc/0xd0 [nouveau]
[  245.346421]  pci_pm_runtime_suspend+0x55/0x180
[  245.346422]  ? pci_pm_runtime_resume+0xa0/0xa0
[  245.346423]  __rpm_callback+0xb9/0x1f0
[  245.346424]  ? put_prev_entity+0x33/0xa10
[  245.346425]  rpm_callback+0x24/0x80
[  245.346426]  ? pci_pm_runtime_resume+0xa0/0xa0
[  245.346427]  rpm_suspend+0x132/0x690
[  245.346428]  ? finish_task_switch+0x78/0x200
[  245.346428]  pm_runtime_work+0x6f/0xb0
[  245.346430]  process_one_work+0x1e5/0x470
[  245.346431]  worker_thread+0x48/0x4e0
[  245.346432]  kthread+0x101/0x140
[  245.346433]  ? process_one_work+0x470/0x470
[  245.346434]  ? kthread_create_on_node+0x60/0x60
[  245.346435]  ret_from_fork+0x2c/0x40

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