i have the following issue:
If i use a monitor with a higher refresh rate then 60 then i will get nasty screen tearing and flickering.
I have a monitor with 75 hz ,a amd rx 480 gpu with open source video drivers.
The work-around the issue that i found is to force the gpu power state to high with the command echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level
In my opinion this should be a High importance because it will offer a pour experience when for every user that it's using open source drivers and a high refresh monitor
Tested on Ubuntu and Ubuntu Mate 18.04.x ,19.04 and 19.10 daily.
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: apolihron 1196 F.... pulseaudio
/dev/snd/controlC0: apolihron 1196 F.... pulseaudio
CurrentDesktop: MATE
DistroRelease: Ubuntu 19.10
InstallationDate: Installed on 2019-08-27 (22 days ago)
InstallationMedia: Ubuntu-MATE 19.10 "Eoan Ermine" - Alpha amd64 (20190827)
IwConfig:
lo no wireless extensions.
enp31s0 no 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-5.3.0-10-generic root=UUID=0f0545cf-77f5-426f-8140-ce269bf41654 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.3.0-10.11-generic 5.3.0-rc8
RelatedPackageVersions:
linux-restricted-modules-5.3.0-10-generic N/A
linux-backports-modules-5.3.0-10-generic N/A
linux-firmware 1.182
RfKill:
Tags: eoan
Uname: Linux 5.3.0-10-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 10/05/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P5.10
dmi.board.name: AB350M Pro4
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.:bvrP5.10:bd10/05/2018:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnAB350MPro4: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.
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1844580
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.