Hi again.
On 01/06/10 16:33, Dave Airlie wrote:
On Tue, Jun 1, 2010 at 4:23 PM, Nigel Cunningham ncunningham@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