Hi again. On 01/06/10 16:33, Dave Airlie wrote: > On Tue, Jun 1, 2010 at 4:23 PM, Nigel Cunningham > <ncunningham at crca.org.au> wrote: >> Hi all. >> >> Just wondering if anyone else has tried to hibernate while using Radeon KMS >> and a tree with Dave's post 2.6.34 patches? My 32 bit P4 based system (with >> an RV250 card) is hanging at the atomic copy, with the following backtrace >> >> hibernation_snapshot >> dpm_suspend_start >> async_synchronize_full >> async_synchronize_cookie >> async_synchronize_cookie_domain
Just tried with the agp_suspend invocation commented out - no difference. But it did lead to me realising I'd forgotten to mention the other part of the issue: the above backtrace is from the thread doing the hibernating. In addition, there's an async work thread with the following backtrace. (I love having kdb in vanilla!) async_thread async_suspend __device_suspend device_for_each_child pm_op pci_pm_freeze pci_legacy_suspend radeon_pci_suspend radeon_suspend_kms radeon_pm_suspend del_timer_sync try_to_del_timer_sync >> I've been trying to bisect, but this computer is being painfully slow, so I >> haven't been making much progress. 2.6.34 with the same config is fine, and >> my bisection progress so far seems to be pointing at the merge I mentioned >> above. > > The only thing I can think off might be the output polling task, or > the fix from Jerome for AGP suspend/resume > 10b06122afcc78468bd1d009633cb71e528acdc5 is AGP one to test > > disabling output polling is a messier revert, might be easier to just edit > drivers/gpu/drm/drm_crtc_helper.c:drm_kms_helper_poll_init and remove > the delayed_slow_work_enqueue call, also forcing repoll to false > inside output_poll_execute which should in theory stop the polling > from starting or being kicked off later. Will try this now. Given the above, I guess it sounds more likely? > I'll try and recreate if I get a chance, cc'ing dri-devel also for > Alex/Jerome. Nigel
