Same for me: I can use xrandr manually in an Xorg session, but not in the Wayland sesson.
>From some stuff I read online, it seems like Gnome is trying to prevent you from making the virtual resolution too low, but if it's already too low, now you're stuck like that, and it really ought to be up to the user. I hardly think 2x is too much for an 8 inch 1200x1920 (boots in portrait, yay!) monitor. -- 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/1716322 Title: gnome-control-centre fails to change display resolution due to "Scale 2 not valid for resolution" Status in gnome-control-center package in Ubuntu: Confirmed Bug description: When I run g-c-c and try to change the laptop's display resolution from 4K to 1920x1080, it fails silently (it should really show the error, but that's another bug). If I have run it from the console, this message appears: (gnome-control-center:5356): display-cc-panel-WARNING **: Config not applicable: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Scale 2 not valid for resolution 1920x1080 I'm currently running in an X11 sesssion, but that's only because Wayland keeps crashing and the session seems to be defaulting back to X11 when I run it again. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-control-center 1:3.25.92.1-0ubuntu1 Uname: Linux 4.13.1-041301-generic x86_64 ApportVersion: 2.20.7-0ubuntu1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Sep 11 13:57:59 2017 InstallationDate: Installed on 2017-08-16 (25 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) JournalErrors: Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system. Users in the 'systemd-journal' group can see all messages. Pass -q to turn off this notice. No journal files were opened due to insufficient permissions. SourcePackage: gnome-control-center UpgradeStatus: Upgraded to artful on 2017-08-17 (25 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1716322/+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
