Sorry, you'd asked about that, before. My secondary monitor shows no signal if the resolution is anything but the maximum, native resolution of the screen.
Changing the refresh rate may temporarily restore drawing to the full screen. However, locking the screen and then allowing it to sleep will trigger another black region at the top of the screen. The effect of different refresh rates is to change the width of the screen. For example, the secondary monitor can run at 120Hz, in which case the black region fills half of the screen, rather than a small slice, as it does at around 60Hz. -- 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/2074559 Title: [nouveau] Top margin of secondary monitor covered with black flickering rectangle Status in linux package in Ubuntu: New Status in mutter package in Ubuntu: New Bug description: The system has two monitors. Workspaces are activated on the primary monitor, but not the second. A custom background image is used on both monitor desktops. Windows created on primary monitor then moved to secondary e.g. firefox. Window moved towards top of secondary monitor. However, window is clipped. Background image is also clipped. The clipped area is about one eighth of the monitor, from the top, and spans the full area from left to right. $ lsb_release -rd No LSB modules are available. Description: Ubuntu 24.04 LTS Release: 24.04 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 ApportVersion: 2.28.1-0ubuntu3 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: pass CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Mon Jul 29 15:35:05 2024 DistUpgraded: Fresh install DistroCodename: noble DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: NVIDIA Corporation TU116 [GeForce GTX 1660 SUPER] [10de:21c4] (rev a1) (prog-if 00 [VGA controller]) Subsystem: eVga.com. Corp. TU116 [GeForce GTX 1660 SUPER] [3842:1068] InstallationDate: Installed on 2024-07-29 (0 days ago) InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424) MachineType: To Be Filled By O.E.M. Z590 Phantom Gaming 4 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-39-generic root=UUID=01105987-3c51-4daa-947e-0b4af195e3a6 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/21/2021 dmi.bios.release: 5.19 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: P2.10 dmi.board.name: Z590 Phantom Gaming 4 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:bvnAmericanMegatrendsInternational,LLC.:bvrP2.10:bd10/21/2021:br5.19:svnToBeFilledByO.E.M.:pnZ590PhantomGaming4:pvrToBeFilledByO.E.M.:rvnASRock:rnZ590PhantomGaming4:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:skuToBeFilledByO.E.M.: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: Z590 Phantom Gaming 4 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. 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.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/linux/+bug/2074559/+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
