Created attachment 111831 [details] Dmesg 3.12-rc5 with dpm enabled Hi, I found last week that my system with radeon RS880 doesn't resume from suspend with radeon dpm enabled with kernel 3.12-rc5. Then i tested with kernel 3.12-rc2 to 3.12-rc4 this weekend with the same result. If i remove radeon.dpm=1 from the command line in grub then everything works fine (like always on this system). It works also fine with kernel 3.11 with dpm enabled. I found no errors in dmesg an Xorg.0.log, both are attached. The kernels are from the ubuntu kernel mainline ppa and i also try with a self compiled vanilla kernel. Tasev Nikola
Created attachment 111841 [details] Xorg.0.log 3.12-rc5 dpm enabled
(In reply to Tasev Nikola from comment #0) > Created attachment 111831 [details] > Dmesg 3.12-rc5 with dpm enabled > > Hi, > > I found last week that my system with radeon RS880 doesn't resume from > suspend with radeon dpm enabled with kernel 3.12-rc5. Then i tested with > kernel 3.12-rc2 > to 3.12-rc4 this weekend with the same result. If i remove radeon.dpm=1 from > the command line in grub then everything works fine (like always on this > system). > It works also fine with kernel 3.11 with dpm enabled. Please append your working 3.11 dmesg and Xorg.0.log. Maybe comparison could help. -Dieter
(In reply to Tasev Nikola from comment #0) > It works also fine with kernel 3.11 with dpm enabled. Can you bisect?
Created attachment 111911 [details] Dmesg 3.11.6 dpm enabled and working ok Dmesg 3.11.6 dpm enabled and working ok
Created attachment 111921 [details] Xorg.0.log 3.11.6 dpm enabled and working ok Xorg.0.log 3.11.6 dpm enabled and working ok
(In reply to Alex Deucher from comment #3) > (In reply to Tasev Nikola from comment #0) > > It works also fine with kernel 3.11 with dpm enabled. > > Can you bisect? Hi, I remember now that i was using 3-4 days 3.12-rc1 before i have reported this bug https://bugs.freedesktop.org/show_bug.cgi?id=70035 (gpu loockup) and the kernel was working fine. I just reinstalled 3.12-rc1 now and i will report later (maybe tomorow) if it works with dpm. I also tested 3.12-rc6 this morning but with no success. I'm reading about bisect the kernel now. Is this a good tutorial for starting ? : http://www.project-insanity.org/blog/2013/02/13/how-i-found-a-kernel-regression-using-git-bisect/
Hi, The 3.12-rc1 kernel is running fine with dpm enabled for more than 7 hours now with 10-15 suspend resume cycles.
Hi, I start the bisect yesterday between 3.12-rc1 and 3.12-rc2. I will report when i'm finish.
Hi I finish the bisect today, here is the result. 1cd8b21aa22c4fe8835abe614da5fa989c66dca9 is the first bad commit commit 1cd8b21aa22c4fe8835abe614da5fa989c66dca9 Author: Alex Deucher <alexander.deucher@amd.com> Date: Fri Sep 13 14:07:03 2013 -0400 drm/radeon/dpm: rework auto performance level enable Calling force_performance_level() from set_power_state() doesn't work on some asics because the current power state pointer has not been properly updated at that point. Move the calls to force_performance_level() out of the asic specific set_power_state() functions and into the main power state sequence. Fixes dpm resume on SI. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> I don't understand much about but looking the commit i didn't see something related to RS880 . Here is the git bisect log just in case it possibly help : git bisect start # bad: [4a10c2ac2f368583138b774ca41fac4207911983] Linux 3.12-rc2 git bisect bad 4a10c2ac2f368583138b774ca41fac4207911983 # good: [272b98c6455f00884f0350f775c5342358ebb73f] Linux 3.12-rc1 git bisect good 272b98c6455f00884f0350f775c5342358ebb73f # bad: [b75ff5e84bb6c2d43a8ec39b240c80f0543821f0] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net git bisect bad b75ff5e84bb6c2d43a8ec39b240c80f0543821f0 # bad: [e9ff04dd94d46c817bbb103531cdef6e7bd5d022] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client git bisect bad e9ff04dd94d46c817bbb103531cdef6e7bd5d022 # good: [3fe03debfc58aba8f5ddb32abd7343237d07714c] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs git bisect good 3fe03debfc58aba8f5ddb32abd7343237d07714c # good: [42e169be3e4be6b6a85344ab219c7d57e158ad46] Merge branch 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux into drm-fixes git bisect good 42e169be3e4be6b6a85344ab219c7d57e158ad46 # bad: [4f7d1bc973ec71dfeeb951765cafe1ff3a63243e] Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes git bisect bad 4f7d1bc973ec71dfeeb951765cafe1ff3a63243e # bad: [1cd8b21aa22c4fe8835abe614da5fa989c66dca9] drm/radeon/dpm: rework auto performance level enable git bisect bad 1cd8b21aa22c4fe8835abe614da5fa989c66dca9 # good: [ce7b30e02578dda6b2263b05308c640f3b57d32c] drm/radeon/dpm/rs780: add some sanity checking to sclk scaling git bisect good ce7b30e02578dda6b2263b05308c640f3b57d32c # good: [c2ee29d00266a9a80fb312042b14a56f8baf978d] drm/radeon/dpm/rs780: fix force_performance state for same sclks git bisect good c2ee29d00266a9a80fb312042b14a56f8baf978d # good: [d592fca9407d065f0754ba29790c66ecbc0366ad] drm/radeon: Fix hmdi typo git bisect good d592fca9407d065f0754ba29790c66ecbc0366ad
Hi, I tested final 3.12 and the bug is still there. I 'm closing this bug because for me is not a big issue, i just disabled dpm and my system is stable. I hear that in next 3.13 kernel the dpm will be enabled by default, i hope that the kernel parameter will still exist so i can disable it. I don't no how to help moore to debug this so for now i'm closing this bug.