Tested with laptop 202211-30793 which only has 1920x1200 for internal display. Install stock 23.04 iso image and update gnome-control-center 1:44.0-1ubuntu6 from lunar-proposed. Connected DUT with external monitor which had resolution 1920x1080. Open gnome-control-center, switch to Display panel and select mirror mode. And gnome-control-center won't crash.
** Tags removed: verification-needed-lunar ** Tags added: verification-done-lunar -- 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/2026228 Title: gnome-control-center crashed when switching to mirror mode and monitors don't have matched resolution Status in OEM Priority Project: Confirmed Status in gnome-control-center package in Ubuntu: Fix Released Status in gnome-control-center source package in Jammy: Fix Committed Status in gnome-control-center source package in Kinetic: Won't Fix Status in gnome-control-center source package in Lunar: Fix Committed Bug description: [Impact] gnome-control-center crashed when switching to mirror mode and monitors don't have matched resolution [Test case] Mirror mode is only an option if there are only 2 monitors connected even if one monitor is disabled. A laptop's internal screen counts as one of the monitors. This particular bug requires two screens that have a screen resolution that they don't both share. (See comment 12 for an example). 1. Connect the monitors 2. Open the GNOME Settings app (gnome-control-center) 3. On the left sidebar, click Displays to switch to the Display panel 4. Switch to mirror mode 3. gnome-control-center won't crash [Where problems could occur] This only modifies the code related to mirror mode in Displays panel. For Lunar, check variable (best_mode) before using it. This patch is backported from GNOME 45 Alpha. For Jammy, include the Lunar patch and update the way to find cloning mode. These 2 additional patches are backported from gnome-control- center 43. [Other info] Two Merge Request are related 1. Check best_mode exist before adding flag (https://gitlab.gnome.org/GNOME/gnome-control-center/-/merge_requests/1835) 2. Use virtual clone modes when mirroring (https://gitlab.gnome.org/GNOME/gnome-control-center/-/merge_requests/1376) To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/2026228/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
