GNOME Bugzilla – Bug 788054
Apply button does not show even though changes are made (system with video outputs on 2 GPUs)
Last modified: 2021-06-09 16:27:09 UTC
When connecting an usb display link device and then switching from "single display" to join displays the apply button does not show.
I am also seeing this on multiple monitor setup. I have 3 displays attached to a 1080Ti via DisplayPort and the physical order (and arrangement in the displays config) is:- [ 1 ][ 3 ][ 2 ] When I click the scale 200% button, the order in the arrangement changes to:- [ 3 ][ 1 ][ 2 ] However, I DO NOT get any kind of "Apply" button. Switching the scale toggle back to 100% leaves the updated arrangement, and presents the "Apply" button in the top right corner. (Which then re orders the screens if you click apply) Ubuntu 17.10 + Gnome 3.26.0 + Nvidia binary 375.82
Experiencing similar apply button strangeness. It seems related to the individual scale setting. Fedora 27 + Gnome 3.26.0, stock drivers (not using Nvidia binary). System has Intel integrated graphics and a Nvidia discrete, lspci identifies as "NVIDIA Corporation GM107GLM [Quadro M2000M] (rev a2)". With the external monitor disconnected, everything behaves as expected and a scale of 200% is intelligently selected. When the external monitor is connected by HDMI, both monitors' scale is set to 100%. Changing the scale for either monitor does not show an "Apply" button. If I leave scale set to 100%, changing display arrangement will show an "apply" button which saves the new arrangement. However, if I select a different scale for either monitor, changing the display arrangement no longer shows an "apply" button. If I had previously changed and applied the arrangement, changing scale also causes the depicted arrangement to revert to the default.
Same here, was trying to arrangement the displays to how I want (which was smaller above a larger display) but I can never get the apply button to appear. Then I switched to mirror which set both displays to the same (which I don't want) so I am trying to go back to joint displays but I cannot as the apply button *ALWAYS* disappears when the scale changes. The apply button should *ALWAYS* appear regardless of the change. Now I am stuck with a single display because it was the only way to restore the scale.
Same here, I have three display: - Monitor 1, Laptop screen, 2880x1620 - Monitor 2, External screen 1: 1920 x 1080 - Monitor 3, External screen 2: 1920 x 1080 Monitor 2 and 3 are connected via a dock G-C-C show a scaling of 200% for Monitor 1 and 2 G-C-C doesn't the scaling factor for Monitor 3 When running G-C-C from the console, I get three times: (gnome-control-center:4441): display-cc-panel-WARNING **: Config not applicable: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Scale 2 not valid for resolution 1920x1080 OS: Ubuntu 17.10, gnome-control-center 3.26.1-0ubuntu4
I have workaround: Force mutter to enable Wayland, even with a hybrid graphics card by adding: MUTTER_ALLOW_HYBRID_GPUS=1 to /etc/environment then reboot, now Wayland should be automatically used instead of x.org: $ env|grep wayland WAYLAND_DISPLAY=wayland-0 XDG_SESSION_TYPE=wayland Now the apply button appears on the Gnome Control Center
Yes it seems this (mostly) happens in a gnome on Xorg session, but I believe I've seen it with gnome on mutter too, not sure though.
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