Am 27.06.2014 03:03, schrieb Michel D?nzer: > On 27.06.2014 09:53, Dieter N?tzel wrote: >> Am 26.06.2014 12:39, schrieb Christian K?nig: >>> Am 26.06.2014 11:29, schrieb Michel D?nzer: >>>> From: Michel D?nzer <michel.daenzer at amd.com> >>>> >>>> Prevents radeon_crtc_handle_flip() from running before >>>> radeon_flip_work_func(), resulting in a kernel panic due to the >>>> BUG_ON() >>>> in drm_vblank_put(). >>>> >>>> Tested-by: Dieter N?tzel <Dieter at nuetzel-hh.de> >>>> Signed-off-by: Michel D?nzer <michel.daenzer at amd.com> >>> >>> Does patch #2 alone fixes the problem as well? >> >> With #2 alone I get this during boot up (before plymouth): > > [...] > >> [ 15.259867] [drm:radeon_crtc_handle_flip] *ERROR* >> radeon_crtc->flip_status = 0 != RADEON_FLIP_SUBMITTED(2) > > That's the original patch I sent to you along with two others for > testing. The patch I submitted in this series has these messages > downgraded to debugging messages, as they just show the patch > preventing > bad stuff from happening as designed. > > The question is, can you reproduce the panic or the 'impossible msc' > lines in the Xorg log with only patch #2?
Here we go (the 'new' #2 alone): For the panic I need more time. But the first 'impossible msc' line arise during X start: [ 80.271] (II) RADEON(0): Modeline "1680x1050"x0.0 119.00 1680 1728 1760 1840 1050 1053 1059 1080 +hsync -vsync (64.7 kHz e) [ 80.271] (II) RADEON(0): Modeline "1920x1080"x60.0 172.80 1920 2040 2248 2576 1080 1081 1084 1118 -hsync +vsync (67.1 kHz e) [ 100.246] (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 5302 < target_msc 5303 Some arise with KWin cube effects. [ 1059.124] (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 62948 < target_msc 62949 [ 1067.223] (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 63435 < target_msc 63436 [ 1081.458] (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 64290 < target_msc 64291 [ 1233.165] (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 73416 < target_msc 73417 [ 1233.515] (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 73437 < target_msc 73438 [ 1234.330] (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 73486 < target_msc 73487 [ 1235.079] (WW) RADEON(0): radeon_dri2_flip_event_handler: Pageflip completion event has impossible msc 73531 < target_msc 73532 Sleep well! -Dieter >> But with Michel's #1+2 and 3 I got this in Xorg.0.log: >> (See Xorg.0.log.old.xz) >> >> (EE) [mi] EQ overflowing. Additional events will be discarded until >> existing events are processed. > > That may not be directly related to the page flipping issues.
