I think I am having a related problem, Ubuntu 20.10 with all updates installed, nvidia-driver-418-server driver.
Lenovo W540 i7-4810MQ Nvidia K2100M + Intel HD 4600 Built-in display 2880x1620 native External display 1920x1080 native I want to set 200% scaling on the built-in display and 100% on the external display, but this is not possible. I can set 100% or 200% for both displays: - 100%: external display looks fine, built-in display too small - 200%: built-in display looks fine, external display too large If I enable fractional scaling then I can set different scaling for each display. The size of everything now looks good on both displays, but every second pixel on the external display looks blurry at 100%. This is particularly noticeable when moving the I-bar cursor of the mouse horizontally over text. This is not the case when fractional scaling is not enabled, so I think it is rendering the external display at double the resolution and scaling down with an inappropriate algorithm. How can I set different scaling on different displays without enabling fractional scaling? I wasn't able to try nightwing666's solution because /etc/modprobe.d/nvidia-modeset.conf does not exist for me, but `sudo cat /sys/module/nvidia_drm/parameters/modeset` returns Y so I think it is enabled anyway. It's a relatively old GPU and the nvidia site claims 340 is the right driver to use, but Ubuntu offered drivers up to 418 so I am using that. I don't mind using the intel GPU, some other driver or figuring out GPU switching, I just want it to work. Really appreciate any help, thanks! -- 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/1870736 Title: [nvidia] Screen scaling 125% gives 200% Status in gnome-control-center package in Ubuntu: Confirmed Status in mutter package in Ubuntu: Confirmed Bug description: Procedure used: 1. Fully updated system via apt update && apt upgrade 2. Select the screen setup in gnome control center 3. Click the "Fractional scaling" toggle 4. Select 125% and click the green "use" button top right (it says "Anvend" in dansih) 5. Observe that the window has grown a lot, click the "use new settings" button 6. The window tells me, I am at 200% scaling. The "200%" option is now highlighted. 7. Switch back to 100% and file this bug. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: ubuntu-release-upgrader-core 1:20.04.16 ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27 Uname: Linux 5.4.0-21-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu22 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: ubuntu:GNOME Date: Sat Apr 4 09:42:34 2020 InstallationDate: Installed on 2018-01-14 (810 days ago) InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=da_DK.UTF-8 SHELL=/bin/bash SourcePackage: ubuntu-release-upgrader Symptom: release-upgrade UpgradeStatus: Upgraded to focal on 2020-04-03 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1870736/+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
