On Mon, Jan 04, 2021 at 09:10:17PM +0100, Oleksandr Natalenko wrote: > On Mon, Jan 04, 2021 at 08:04:08PM +0100, Andre Tomt wrote: > > On 28.12.2020 13:50, Greg Kroah-Hartman wrote: > > > From: Stylon Wang <stylon.wang@xxxxxxx> > > > > > > commit a135a1b4c4db1f3b8cbed9676a40ede39feb3362 upstream. > > > > > > EDID parsing in S3 resume pushes new display modes > > > to probed_modes list but doesn't consolidate to actual > > > mode list. This creates a race condition when > > > amdgpu_dm_connector_ddc_get_modes() re-initializes the > > > list head without walking the list and results in memory leak. > > > > This commit is causing me problems on 5.10.4: when I turn off the display (a > > LG TV in this case), and turn it back on again later there is no video > > output and I get the following in the kernel log: > > > > [ 8245.259628] [drm:dm_restore_drm_connector_state [amdgpu]] *ERROR* > > Restoring old state failed with -12 > > Uh, it seems you've just saved me a ton of gray hair. I have the very > same issue and I'm going to revert this patch now in order to check > whether it makes any difference. Confirmed, reverting this patch makes my monitor light back after turning off/on. Also, during testing, I've noticed that with the stock v5.10.4 kernel once reboot sequence is initiated and xorg gets killed, the monitor also lights back and shows the console. My HW: 0a:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Lexa PRO [Radeon 540/540X/550/550X / RX 540X/550/550X] (rev c7) > > Thanks! > > > > > I've found another report on this commit as well: > > https://bugzilla.kernel.org/show_bug.cgi?id=211033 > > > > And I suspect this is the same: > > https://bugs.archlinux.org/task/69202 > > > > Reverting it from 5.10.4 makes things behave again. > > > > Have not tested 5.4.86 or 5.11-rc. > > > > I'm using a RX570 Polaris based card. -- Oleksandr Natalenko (post-factum)
