From the 5.3.5 changelog:
drm/radeon: Fix EEH during kexec
[ Upstream commit 6f7fe9a93e6c09bf988c5059403f5f88e17e21e6 ]
During kexec some adapters hit an EEH since they are not properly
shut down in the radeon_pci_shutdown() function. Adding
radeon_suspend_kms() fixes this issue.
This commit creates a problem where I can't shut down or restart my system without pressing the Rest button. The problem is solved by commenting out the call to radeon_suspend_kms() in radeon_pci_shutdown.
The gpu hardware is an ATI Radeon HD5770 in a PCI-E slot on an Intel DG41RQ MB.
I also have same problem and
can confirm that reverting commit 6f7fe9a93e6c09bf988c5059403f5f88e17e21e6 fixes it.
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Juniper XT [Radeon HD 5770], PCI-E,
on a MICRO-STAR INTERNATIONAL CO.,LTD MS-7599/770-C45 (MS-7599), BIOS V1.15 03/04/2011
(this bug kind of reminds me of https://bugs.freedesktop.org/show_bug.cgi?id=99524)
Should land this week.