Closed per comment #8 where the original reporter mentions the problem is fixed.
Anyone else still experiencing issues, please open a new bug for each issue. ** Changed in: linux (Ubuntu) Status: Incomplete => Fix Released -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1874588 Title: [amdgpu] Flickering screen after waking up from Suspend Status in linux package in Ubuntu: Fix Released Bug description: Just did a fresh install of Ubuntu 20.04 LTS and everything was fine, display worked perfect. Then I put the machine in Suspend mode (by clicking on GUI button), left for 5 minutes, came back, woke up the machine (by clicking a key on the keyboard), and upon waking up, the display started flickering heavily. Relevant Specs (Sorry if I missed anything): AMD® Ryzen 9 3900x 12-core processor × 24 AMD® Radeon rx 5700 xt GNOME version 3.36.1 Windowing System X11 I am running 3 monitors: Samsung with resolution 3840x2160 and 2 LG monitors with resolution 1920x1080, all at 60Hz Most of the flickering is happening on Samsung, although once in a while, other monitors flicker a little bit as well. Things to note: When I switch Samsung to lower resolution, the flickering goes away. When I come back to 3840x2160, it comes back. When I switch to lower resolution, suspend and come back, everything is fine. If I reboot the machine, the display is fine until I suspend and wake up again (if I am in higher resolution). I tried changing the refresh rate of Samsung to 30.00 and 29.97 (the only two available when I turn off FreeSync), and the issue still persists. Turning FreeSync on and off does nothing. Thank you, Pavel. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-26-generic 5.4.0-26.30 ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30 Uname: Linux 5.4.0-26-generic x86_64 ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: pavel 1870 F.... pulseaudio /dev/snd/controlC0: pavel 1870 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Thu Apr 23 21:14:00 2020 InstallationDate: Installed on 2020-04-23 (0 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: System manufacturer System Product Name ProcEnviron: LANGUAGE=en_CA:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_CA.UTF-8 SHELL=/bin/bash ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-26-generic root=UUID=02f6301e-c22b-462d-a4e5-71a78b7eb203 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-26-generic N/A linux-backports-modules-5.4.0-26-generic N/A linux-firmware 1.187 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/19/2019 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1405 dmi.board.asset.tag: Default string dmi.board.name: TUF GAMING X570-PLUS (WI-FI) dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1405:bd11/19/2019:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnTUFGAMINGX570-PLUS(WI-FI):rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.sku: SKU dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1874588/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp