Dear @vanvugt and all, I am so happy to find this issue, because I suffer from the same problem. However I am very surprised to see this issue closed as fixed, when @raffaeler was saying that the proposed fix does *not* solve the main problem (and it does not solve it for me either)!
So the original, main problem reported here in this issue is (quoting from OP): ---- After a period of inactivity, the screens get blanked as configured. When I move the mouse and the screens unblank, sometimes (not always) the configuration is changed by mirroring the same content on the two displays. Anyway, the display are still configured as extended in the applet. Trying to change some settings to restore the desired configuration never work. ---- I have exactly this problem, and it is driving me crazy. The problem appeared for me with Ubuntu 22.04, after I changed: - Second monitor was set from older HDMI standard to HDMI 1.4 - Screen resolution was increased from 1920x1080 to 3840x2160 @60 Hz Prior to that, I never had problems with the displays or their configuration. After that change, the problem persists. Here is what I tried: - Update from Ubuntu 22.04 to 24.04 - Change NVIDIA driver from 535 to 550 - Change NVIDIA driver to nouveau - Unplug and re-plug all cables Nothing helped. I'm using X11 instead of wayland, because currently VSCode does not support wayland (yet). Not sure if this is related. Attached a snipped from syslog from when the issue comes. ** Attachment added: "syslog-x11-error.txt" https://bugs.launchpad.net/ubuntu/+source/ubuntu-drivers-common/+bug/2075525/+attachment/5815624/+files/syslog-x11-error.txt -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to ubuntu-drivers-common in Ubuntu. https://bugs.launchpad.net/bugs/2075525 Title: After screen blank, the displays configuration gets lost Status in ubuntu-drivers-common package in Ubuntu: Fix Released Bug description: I have configured the host screen with two monitors extending the desktop. They are both configured at 3840x2160, scale 150%, fractional scaling: yes. After a period of inactivity, the screens get blanked as configured. When I move the mouse and the screens unblank, sometimes (not always) the configuration is changed by mirroring the same content on the two displays. Anyway, the display are still configured as extended in the applet. Trying to change some settings to restore the desired configuration never work. I have to unbplug and re-plug the second monitor. But sometimes, after unplugging and replugging the secondary monitor, the session crashes, all the apps are terminated and I get just the logon screen. In other words, gnome is not able to manage reliably the blank/unblank cycle in a multi-monitor configuration. I also tried with the AMD built-in graphics card and the behavior is exactly the same. Therefore I don´t think that the NVidia driver has anything to do with it. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: xorg 1:7.7+23ubuntu3 ProcVersionSignature: Ubuntu 6.8.0-39.39-generic 6.8.8 Uname: Linux 6.8.0-39-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia .proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file. .proc.driver.nvidia.capabilities.mig: Error: path was not a regular file. .proc.driver.nvidia.gpus.0000.01.00.0: Error: path was not a regular file. .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.suspend: suspend hibernate resume .proc.driver.nvidia.suspend_depth: default modeset uvm .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 535.183.01 Sun May 12 19:39:15 UTC 2024 GCC version: ApportVersion: 2.28.1-0ubuntu3 Architecture: amd64 CasperMD5CheckResult: pass CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Thu Aug 1 16:41:52 2024 DistUpgraded: 2024-05-30 18:43:55,152 DEBUG migrateToDeb822Sources() DistroCodename: noble DistroVariant: ubuntu GraphicsCard: NVIDIA Corporation GP106 [GeForce GTX 1060 3GB] [10de:1c02] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Gigabyte Technology Co., Ltd GP106 [GeForce GTX 1060 3GB] [1458:3722] Advanced Micro Devices, Inc. [AMD/ATI] Raphael [1002:164e] (rev c9) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Raphael [1043:8877] InstallationDate: Installed on 2023-12-11 (234 days ago) InstallationMedia: Ubuntu-Server 23.04 "Lunar Lobster" - Release amd64 (20230415) MachineType: ASUS System Product Name ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-39-generic root=UUID=445b6419-9578-4846-99e2-eb90362e1711 ro amd_iommu=on pcie_port_pm=off kvm.ignore_msrs=1 iommu=pt kvm_amd.npt=1 kvm_amd.avic=1 vfio-pci.ids=10de:2805,10de:22bd SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to noble on 2024-05-30 (63 days ago) dmi.bios.date: 04/12/2024 dmi.bios.release: 20.7 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2007 dmi.board.asset.tag: Default string dmi.board.name: ProArt X670E-CREATOR WIFI dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2007:bd04/12/2024:br20.7:svnASUS:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnProArtX670E-CREATORWIFI:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:skuSKU: 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: ASUS version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.120-2build1 version.libgl1-mesa-dri: libgl1-mesa-dri 24.0.9-0ubuntu0.1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core 2:21.1.12-1ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:22.0.0-1build1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1build1 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/ubuntu-drivers-common/+bug/2075525/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
