HWE kernel appears to get more amdgpu MST related WARNINGs and Oopses than non-HWE, mostly after resume from blanking or suspend. Kernel logs for most recent one attached.
$ journalctl -b -1 -k | egrep -v 'audit|dbus-daemon' > /tmp/oops20210428.txt $ fgrep RIP /tmp/oops20210428.txt Apr 26 09:06:11 ub3ff kernel: RIP: 0010:dcn20_validate_bandwidth_fp+0x9d/0xf0 [amdgpu] Apr 26 09:06:11 ub3ff kernel: RIP: 0010:dcn10_get_dig_frontend+0x93/0xc0 [amdgpu] Apr 28 08:23:04 ub3ff kernel: RIP: 0010:dc_link_allocate_mst_payload+0x1c9/0x1e0 [amdgpu] Apr 28 08:23:04 ub3ff kernel: RIP: 0033:0x7fe6953a550b Apr 28 08:24:02 ub3ff kernel: RIP: 0010:dc_link_add_remote_sink+0x65/0x110 [amdgpu] Apr 28 08:24:02 ub3ff kernel: RIP: 0033:0x7fe6953a550b Apr 28 08:24:02 ub3ff kernel: RIP: 0010:dm_dp_mst_get_modes+0xd9/0x210 [amdgpu] Apr 28 08:24:02 ub3ff kernel: RIP: 0033:0x7fe6953a550b Apr 28 08:24:02 ub3ff kernel: RIP: 0010:dm_dp_mst_get_modes+0xd9/0x210 [amdgpu]
ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.8.0-50-generic 5.8.0-50.56~20.04.1 ProcVersionSignature: Ubuntu 5.8.0-50.56~20.04.1-generic 5.8.18 Uname: Linux 5.8.0-50-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.16 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Wed Apr 28 08:43:08 2021 InstallationDate: Installed on 2020-04-10 (382 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402) SourcePackage: linux-signed-hwe-5.8 UpgradeStatus: No upgrade log present (probably fresh install)
HWE kernel appears to get more amdgpu MST related WARNINGs and Oopses than non-HWE, mostly after resume from blanking or suspend.
Kernel logs for most recent one attached.
$ journalctl -b -1 -k | egrep -v 'audit|dbus-daemon' > /tmp/oops202104 28.txt 28.txt validate_ bandwidth_ fp+0x9d/ 0xf0 [amdgpu] get_dig_ frontend+ 0x93/0xc0 [amdgpu] link_allocate_ mst_payload+ 0x1c9/0x1e0 [amdgpu] link_add_ remote_ sink+0x65/ 0x110 [amdgpu] dp_mst_ get_modes+ 0xd9/0x210 [amdgpu] dp_mst_ get_modes+ 0xd9/0x210 [amdgpu]
$ fgrep RIP /tmp/oops202104
Apr 26 09:06:11 ub3ff kernel: RIP: 0010:dcn20_
Apr 26 09:06:11 ub3ff kernel: RIP: 0010:dcn10_
Apr 28 08:23:04 ub3ff kernel: RIP: 0010:dc_
Apr 28 08:23:04 ub3ff kernel: RIP: 0033:0x7fe6953a550b
Apr 28 08:24:02 ub3ff kernel: RIP: 0010:dc_
Apr 28 08:24:02 ub3ff kernel: RIP: 0033:0x7fe6953a550b
Apr 28 08:24:02 ub3ff kernel: RIP: 0010:dm_
Apr 28 08:24:02 ub3ff kernel: RIP: 0033:0x7fe6953a550b
Apr 28 08:24:02 ub3ff kernel: RIP: 0010:dm_
ProblemType: Bug 5.8.0-50- generic 5.8.0-50.56~20.04.1 ature: Ubuntu 5.8.0-50. 56~20.04. 1-generic 5.8.18 0ubuntu27. 16 esult: skip hwe-5.8
DistroRelease: Ubuntu 20.04
Package: linux-image-
ProcVersionSign
Uname: Linux 5.8.0-50-generic x86_64
ApportVersion: 2.20.11-
Architecture: amd64
CasperMD5CheckR
CurrentDesktop: ubuntu:GNOME
Date: Wed Apr 28 08:43:08 2021
InstallationDate: Installed on 2020-04-10 (382 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
SourcePackage: linux-signed-
UpgradeStatus: No upgrade log present (probably fresh install)