I am using a 64-bit Kabini based system (AMD Athlon 5350) with Kodi 14.0 on an up-to-date Arch linux. Kodi plays this https://dl-web.dropbox.com/get/hi10p_sample.mp4?w=AAC8qnXfS0xxWbd5Fc2bkvWxMxeqlUiSkL-Dxe5C5BDVyw&dl=1&_subject_uid=6760021 small sample file fine with kernel 3.16.x, but with kernel >= 3.17 the playback is only 1 fps (like a slideshow). It is a hi10p video, so Kodi uses pure software decoding. I've done a git bisect between 3.16 and 3.17-rc1 and found that 02376d8282b88f07d0716da6155094c8760b1a13 is the first bad commit. commit 02376d8282b88f07d0716da6155094c8760b1a13 Author: Michel Dänzer <michel.daenzer@amd.com> Date: Thu Jul 17 19:01:08 2014 +0900 drm/radeon: Allow write-combined CPU mappings of BOs in GTT (v2) v2: fix rebase onto drm-fixes Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Then I applied the patch found in comment 30 of bug 84627 attachment 11024 [details] (as I use 64-bit system). This patch worked around the problem on 3.17 and on the latest 3.19-rc5 kernel as well and now Kodi plays the above video 24 fps.
Sorry, attachment 110024 [details] [review]
And the right video URL is: https://dl-web.dropbox.com/get/hi10p_sample.mp4?w=AAC8qnXfS0xxWbd5Fc2bkvWxMxeqlUiSkL-Dxe5C5BDVyw&dl=1&_subject_uid=67600211
What version of Mesa are you using? Does the problem already happen with Mesa commit 07c65b85eada8dd34019763b6e82ed4257a9b4a6, or if not, can you bisect Mesa?
My Arch Linux is up-to-date, I use Mesa 10.4.2 and so commit 07c65b85eada8dd34019763b6e82ed4257a9b4a6 is included. I am ready to do bisecting Mesa if you wish, but at the moment I don't know where to start, what kernel version to use during bisecting Mesa.
(In reply to jtossenb from comment #4) > My Arch Linux is up-to-date, I use Mesa 10.4.2 and so commit > 07c65b85eada8dd34019763b6e82ed4257a9b4a6 is included. If it wasn't included, you wouldn't have the problem. :) My question was: If you build Mesa *at* commit 07c65b85eada8dd34019763b6e82ed4257a9b4a6, does the problem occur with that? If not, please bisect Mesa between that commit and the 10.4.2 release. If yes, there's nothing to bisect. > I am ready to do bisecting Mesa if you wish, but at the moment I don't know > where to start, what kernel version to use during bisecting Mesa. Any kernel which exposes the problem in your testing so far should do.
Well he can just try to revert this one again, Kodi seems to does not like that: http://cgit.freedesktop.org/mesa/mesa/commit/src/gallium/drivers/radeon/r600_buffer_common.c?id=7b4276d7acf2e0f77044cb50caa6ad936fa78786 @Michel I guess this should be reverted again as Valley does not stutter with 3.19 kernel.
(In reply to smoki from comment #6) > Well he can just try to revert this one again, Kodi seems to does not like > that: > > http://cgit.freedesktop.org/mesa/mesa/commit/src/gallium/drivers/radeon/ > r600_buffer_common.c?id=7b4276d7acf2e0f77044cb50caa6ad936fa78786 Thanks, it was a good idea! I've built Mesa 10.4.2 with the reverted commit and the problem solved, Kodi works fine now. I used the original 3.18.2-2-ARCH kernel during the test.
(In reply to jtossenb from comment #2) > And the right video URL is: > https://dl-web.dropbox.com/get/hi10p_sample.mp4?w=AAC8qnXfS0xxWbd5Fc2bkvWxMxeqlUiSkL-Dxe5C5BDVyw&dl=1&_subject_uid=67600211 I get error 403 for that.
Sorry. I hope it works. https://www.dropbox.com/s/3ronrw57r3n8hsn/hi10p_sample.mp4?dl=1
Created attachment 113144 [details] [review] st/mesa: Don't use PIPE_USAGE_STREAM for unpack PBOs Does this Mesa patch help?
(In reply to Michel Dänzer from comment #10) > Does this Mesa patch help? Yes, it does! mesa-10.4.3 + this patch works fine. Thank you very much!
Module: Mesa Branch: master Commit: a338dc01866ce50bf7555ee8dc08491c7f63b585 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=a338dc01866ce50bf7555ee8dc08491c7f63b585 Author: Michel Dänzer <michel.daenzer@amd.com> Date: Thu Feb 5 12:46:04 2015 +0900 st/mesa: Don't use PIPE_USAGE_STREAM for GL_PIXEL_UNPACK_BUFFER_ARB
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