I can verify the symptoms as described here with the nvidia 440.95.01 driver an Nvidia P620 card with three monitors (left and right monitors in portrait center in landscape.
I can use the Nvidia supplied GUI app nvidia-settings to configure three screens (using rotate left in the nvidia-settings configurator to get proper orientation) and press apply then everything works properly, though as previously pointed out those settings are lost during login. When configuring with the Ubuntu Settings Display dialog I must use portriat rotate-right to get the correct orientation (along with the improperly scaled viewport). For those with two monitors, if you put the portrait monitor on the left of the landscape monitor the ubuntu settings program generates the correct result (at least for me). I'd be willing to install the nvidia 450 driver directly if I believe the problem would go away but I've not hear anyone say that's true. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1874217 Title: [nvidia] Dual monitor setup with secondary monitor in portrait-right mode cause tiled windows to occupy 1.5 monitors Status in gnome-control-center: Unknown Status in Mutter: Unknown Status in gnome-control-center package in Ubuntu: Triaged Status in mutter package in Ubuntu: Confirmed Bug description: I'm on Ubuntu 20.04 AMD64 fully up to date and freshly rebooted. I use dual screen : the main screen is on the left side (32"), the secondary screen (19") is at right and in portrait mode (rotated right). The window are improperly growed : they extend from full main screen to half the "witdh" of the secondary screen. Additionnally, the « pop-up » menus (eg. from settings) do not appear at the right place (see screen capture in comment). The problem disappears if I revert the orientation of secondary screen from « portrait turned right » to « landscape ». I do have gnome-shell-extension-ubuntu-dock in version 67ubuntu20.04.5, but still got the problem. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: gnome-shell 3.36.1-5ubuntu1 ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30 Uname: Linux 5.4.0-26-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Wed Apr 22 11:11:25 2020 DisplayManager: gdm3 InstallationDate: Installed on 2020-04-19 (2 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash RelatedPackageVersions: mutter-common 3.36.1-3ubuntu3 SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1874217/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
