https://bugs.freedesktop.org/show_bug.cgi?id=76732
--- Comment #12 from Ilia Mirkin <[email protected]> --- (In reply to comment #11) > Maybe now I can clarify a little bit. > > > If nouveau loads at boot, the problem is always there, even with > drm_kms_helper.poll=0. > > > If nouveau is blacklisted at boot i have two possible situations: > 1) > - i have gdm on the screen > - through ssh load drm_kms_helper with poll=0 > - load nouveau > - the screen goes black, or sometimes it displays some rubbish > - in dmesg whis appears: > [ 66.938644] pci_pm_runtime_suspend(): > nouveau_pmops_runtime_suspend+0x0/0xd0 [nouveau] returns -22 > - i press ctrl+alt+F1 and nothing happens but this appears in dmesg: > [ 175.868791] detected fb_set_par error, error code: -22 > -> CPU load is normal Yeah, nouveau suspends and is gone forever. You can disable runtime pm with nouveau.runpm=0. A fix for this should be in 3.14-final, I think. > > 2) > - switch to tty1 > - through ssh load drm_kms_helper with poll=0 > - load nouveau > - screen changes resolution and still works, also changing tty works > - CPU load at 100% > > > All the 3 situations are reproducible all the time In one of the cpu load at 100% situations, could you do a perf record -g -a (as root), and attach the resulting perf.data file after like 30s of runtime, along with your kallsyms (which should include nouveau and drm* symbols... grabbing /proc/kallsyms from a running kernel should work). -- You are receiving this mail because: You are the assignee for the bug.
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