[Bug 2063417] Re: Fix system hang while entering suspend with AMD Navi3x graphics

kernel changes included in 6.8.7

** Changed in: linux (Ubuntu Noble)
Status: Confirmed => Fix Committed

** Changed in: linux (Ubuntu Jammy)
Status: Confirmed => Invalid

** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid

--
You received this bug notification because you are subscribed to linux
in Ubuntu.
Matching subscriptions: Bgg, Bmail, Nb
https://bugs.launchpad.net/bugs/2063417

Title:
Fix system hang while entering suspend with AMD Navi3x graphics

Status in HWE Next:
New
Status in linux package in Ubuntu:
Invalid
Status in linux-firmware package in Ubuntu:
Invalid
Status in linux-oem-6.5 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Invalid
Status in linux-firmware source package in Jammy:
Fix Committed
Status in linux-oem-6.5 source package in Jammy:
Fix Released
Status in linux source package in Noble:
Fix Committed
Status in linux-firmware source package in Noble:
Fix Committed
Status in linux-oem-6.5 source package in Noble:
Invalid

Bug description:
SRU Jusitification for Kernel

[Impact]
The system with AMD W7500/W7600/W7700 graphics will randomly hang when entering suspend. The page fault would keep happening and the system can't handle other tasks.
BUG: unable to handle page fault for address: 000000000a980148

[Fix]
Backport the fix from upstream
drm/amdgpu: skip to program GFXDEC registers for suspend abort · torvalds/linux@0326de4 · GitHub
drm/amdgpu: Reset dGPU if suspend got aborted · torvalds/linux@8b2be55 · GitHub
https://patchwork.freedesktop.org/patch/590570/ [patchwork.freedesktop.org]

[Test Case]
1. Install AMD W7500/W7600/W7700 graphics
2. Install latest firmware with dcn_3_2_0_dmcub.bin for Navi31 and 32 and dcn_3_2_1_dmcub.bin for Navi33.
3. Running fwts s3 stress test to check if system hangs

[Where problems could occur]
Improve the error handling when suspend and add the fallback mechanism in MES engine. Only observed on particular AMD models. Need to test w/ more combinations

=========================================================================================

SRU Jusitification for linux-firmware

[Impact]
The system will randomly hang due to page fault while suspending.

[Fix]
Add release FW binary from AMD to linux-firmware
dcn_3_2_0_dmcub.bin for Navi31 and 32: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/amdgpu/dcn_3_2_0_dmcub.bin?id=eb06e8bbe56cea19b8c2a23c154e2dcefd79fa47 [git.kernel.org]
dcn_3_2_1_dmcub.bin for Navi33: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/amdgpu/dcn_3_2_1_dmcub.bin?id=8b8ac15f9bce35d555b8253156053a7e2b661f6a [git.kernel.org]

[Test Case]
1. Install AMD W7500/W7600/W7700 graphics
2. Test with latest linux kernel and linux-firmware
3. Running fwts s3 stress test to check if system hangs

[Where problems could occur]
The dcn_3_2_0_dmcub only for Navi31 and dcn_3_2_1_dmcub only for Navi33. The impact are restricted to particular series.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/2063417/+subscriptions