I can confirm I have the same issue. I've reverted the kernel back to
5.4.0-65 to temporarily solve the issue.
I have all of the logs and details posted here:
https://forums.linuxmint.com/viewtopic.php?f=59&t=343546&p=1977800#p1977800
The most important being:
Feb 25 15:46:06 meritwork-linux kernel: [drm:dce112_get_pix_clk_dividers
[amdgpu]] *ERROR* dce112_get_pix_clk_dividers: Invalid parameters!!
Feb 25 15:46:06 meritwork-linux kernel: [drm:dm_restore_drm_connector_state
[amdgpu]] *ERROR* Restoring old state failed with -22
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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1916919
Title:
after upgrade to 5.4.0-66 monitor remains black after off/on cycle
Status in linux package in Ubuntu:
Confirmed
Bug description:
i updated today to linux kernel 5.4.0-66-generic.
since then the monitor (HDMI) remains black when switched off and on again.
this can be corrected once, if a virtual text console hasn't been used so far
by switching to a virtual text console and then back to the desktop.
Ubuntu 5.4.0-66.74-generic 5.4.86 (Linux Mint 20, Cinnamon 4.6.7)
lspci-vnvn.log attached
Asrock DeskMini A300
AMD Ryzen 5 2400G with Radeon Vega Graphics × 4
Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series /
Radeon Vega Mobile Series]
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC2: kio1177 F pulseaudio
/dev/snd/controlC1: kio1177 F pulseaudio
/dev/snd/controlC0: kio1177 F pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: X-Cinnamon
DistroRelease: Linux Mint 20
InstallationDate: Installed on 2020-07-24 (216 days ago)
InstallationMedia: Linux Mint 20 "Ulyana" - Release amd64 20200624
IwConfig:
lono wireless extensions.
enp3s0no wireless extensions.
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
Package: linux (not installed)
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-66-generic
root=UUID=c96f03d4-1951-4c06-8d5d-61bd5b22b308 ro quiet splash
ProcVersionSignature: Ubuntu 5.4.0-66.74-generic 5.4.86
RelatedPackageVersions:
linux-restricted-modules-5.4.0-66-generic N/A
linux-backports-modules-5.4.0-66-generic N/A
linux-firmware1.187.9
RfKill:
Tags: ulyana
Uname: Linux 5.4.0-66-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo www-data
_MarkForUpload: True
dmi.bios.date: 05/15/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P3.50
dmi.board.name: A300M-STX
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrP3.50:bd05/15/2019:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnA300M-STX:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: To Be Filled By O.E.M.
dmi.product.sku: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
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