I booted up a live disk with Ubuntu 17.04 (Unity) and it shows the same behavior.
** Description changed: - Since Ubuntu switched to Gnome, display scaling does not work correctly. - This is because my external monitor is detected as 7" although it is - 32". All applications which use Qt auto scaling have huge controls! + My external monitor is detected as 7" although it is 32". All + applications which use Qt auto scaling have huge controls! It seems like many users have the same problem (https://ubuntuforums.org/showthread.php?t=2390362) and thus disable Qt auto scaling. I think the solution should be to fix the size detection instead. + + It seems not related to the display server, compositor or window manager + since the problem appeared in Ubuntu 17.04 (Mir, Unity) as well es 18.04 + (Mutter, Gnome). I tried it with both Wayland and X (on Wayland). Further, it seems not related to graphics driver, since I personally use the open source driver with my internal Intel card, whereas someone else uses a proprietary Nvidia driver (https://askubuntu.com/q/1066879/206608). If it is in the wrong category, please move it / add the corresponding packages. If you need any further information to tackle the problem, just tell me! - --- + --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.3 Architecture: amd64 CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2017-09-05 (372 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) Package: qtbase-opensource-src PackageArchitecture: amd64 Tags: bionic Uname: Linux 4.18.7-041807-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom davfs2 dip docker lpadmin plugdev sambashare sudo vboxusers video voice _MarkForUpload: True ** Attachment added: "xrandr output for external display on 17.04" https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1792167/+attachment/5188747/+files/xrandr.log -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1792167 Title: Display size detected incorrectly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1792167/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
