Happens with me too after sleep/wakeup lenovo x1 carbon gen8 / HDMI LG 27GL850 which should run at 2460x1440@60hz but instead its 1920x1080@60hz. In my case only restart works. One thing I noticed is that my screen is initally determined as LG Electronics 31" but its actually 27" monitor
-- 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/1978980 Title: [amdgpu] Wrong external screen resolution after wake up from sleep Status in linux package in Ubuntu: Confirmed Status in xorg-server package in Ubuntu: Confirmed Bug description: After the Ubuntu distro upgrade (upgrade from LTS 20.04 to LTS 22.04, running KDE) I started experiencing a problem with external screen resolution after the wake up from sleep. The monitor resolution is small (1280x768) and doesn't respect the setting prior the sleep (1920x1200). After the wake up from sleep: ``` > xrandr HDMI-A-0 disconnected (normal left inverted right x axis y axis) DisplayPort-0 disconnected (normal left inverted right x axis y axis) DisplayPort-1 connected primary 1280x768+0+0 (normal left inverted right x axis y axis) 535mm x 339mm 1280x768 59.94* # a list of lower resolutions ``` There is an error when trying to change the setting to the highest resolution supported by the monitor (which is not included in the above list). ``` > xrandr --output DisplayPort-1 --mode 1920x1200 xrandr: cannot find mode 1920x1200 ``` After the turn off and turn on of the external monitor, the resolution is somehow added to the xrandr list: ``` > xrandr HDMI-A-0 disconnected (normal left inverted right x axis y axis) DisplayPort-0 disconnected (normal left inverted right x axis y axis) DisplayPort-1 connected primary 1280x768+0+0 (normal left inverted right x axis y axis) 535mm x 339mm 1920x1200 59.95 + # a list of resolutions 1280x768 59.94* # a list of lower resolutions ``` Now it is possible to change the resolution: ``` > xrandr --output DisplayPort-1 --mode 1920x1200 # no output, the resolution was successfully changed ``` After the change, the resolution is successfully changed and xrandr gives proper output: ``` > xrandr HDMI-A-0 disconnected (normal left inverted right x axis y axis) DisplayPort-0 disconnected (normal left inverted right x axis y axis) DisplayPort-1 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 535mm x 339mm 1920x1200 59.95*+ # a list of lower resolutions ``` The problem is not present on fresh start. However, it is consistently present after the wake up from sleep. What can cause the problem and how may I fix it? Running AMD based laptop (Ryzen 7 3700U with integrated graphics), the external monitor is connected via USB-C. There are no problems with laptop screen resolution, only external monitor is affected. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: xorg 1:7.7+23ubuntu2 ProcVersionSignature: Ubuntu 5.15.0-37.39-generic 5.15.35 Uname: Linux 5.15.0-37-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.1 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: unknown CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: KDE Date: Thu Jun 16 18:12:05 2022 DistUpgraded: 2022-05-08 07:52:25,560 DEBUG icon theme changed, re-reading DistroCodename: jammy DistroVariant: ubuntu ExtraDebuggingInterest: No GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Picasso/Raven 2 [Radeon Vega Series / Radeon Vega Mobile Series] [1002:15d8] (rev c1) (prog-if 00 [VGA controller]) Subsystem: Lenovo ThinkPad E595 [17aa:5124] InstallationDate: Installed on 2019-08-21 (1030 days ago) InstallationMedia: Kubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) MachineType: LENOVO 20NE000BMC ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-37-generic root=UUID=0fff4104-4909-4124-b8b0-8430281f24be ro open splash iommu=soft vt.handoff=7 RebootRequiredPkgs: Error: path contained symlinks. SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to jammy on 2022-05-08 (39 days ago) dmi.bios.date: 01/26/2022 dmi.bios.release: 1.24 dmi.bios.vendor: LENOVO dmi.bios.version: R11ET44W (1.24 ) dmi.board.asset.tag: Not Available dmi.board.name: 20NE000BMC dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.24 dmi.modalias: dmi:bvnLENOVO:bvrR11ET44W(1.24):bd01/26/2022:br1.24:efr1.24:svnLENOVO:pn20NE000BMC:pvrThinkPadE495:rvnLENOVO:rn20NE000BMC:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20NE_BU_Think_FM_ThinkPadE495: dmi.product.family: ThinkPad E495 dmi.product.name: 20NE000BMC dmi.product.sku: LENOVO_MT_20NE_BU_Think_FM_ThinkPad E495 dmi.product.version: ThinkPad E495 dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.110-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 22.0.1-1ubuntu2.1 version.libgl1-mesa-glx: libgl1-mesa-glx 22.0.1-1ubuntu2.1 version.xserver-xorg-core: xserver-xorg-core 2:21.1.3-2ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2build3 version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1978980/+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
