We're probably not going to rewrite the Xorg fractional scaling to work around shortcomings in the Xorg feature we rely on. It maybe isn't even possible. More likely we're just waiting on fixes to Xorg itself:
https://gitlab.freedesktop.org/xorg/xserver/merge_requests/24 Or similarly likely Wayland will become the default where fractional scaling works better already. ** Bug watch added: gitlab.freedesktop.org/xorg/xserver/issues #244 https://gitlab.freedesktop.org/xorg/xserver/issues/244 ** Also affects: xorg-server via https://gitlab.freedesktop.org/xorg/xserver/issues/244 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1846398 Title: Fractional scaling has significant visible refreshes on a 4k display Status in X.Org X server: Unknown Status in gnome-shell package in Ubuntu: Confirmed Status in mutter package in Ubuntu: Confirmed Status in xorg-server package in Ubuntu: Confirmed Bug description: On my laptop, fractional scaling seems fine, including watching a YouTube video. It has a quad HD display. Enabling fractional scaling on my desktop which is attached to a single 4k display, fractional scaling isn't usable. The video appears to be constantly refreshing and not using the same acceleration as if I just run at 100% or 200%. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: gnome-shell 3.34.0-1ubuntu1 ProcVersionSignature: Ubuntu 5.3.0-13.14-generic 5.3.0 Uname: Linux 5.3.0-13-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Wed Oct 2 14:23:33 2019 DisplayManager: gdm3 InstallationDate: Installed on 2018-07-24 (435 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180724) ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash RelatedPackageVersions: mutter-common 3.34.0-3ubuntu1 SourcePackage: gnome-shell UpgradeStatus: Upgraded to eoan on 2019-07-19 (74 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1846398/+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
