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