Internal screen touch sensor remains active when only external display is enabled

[Julian Andres Klode]

I connected the ThinkPad T14 G3 AMD to an external screen with the lid open, turned off the internal screen, and to my surprise when my cat walked over the screen she moved the windows on the external screen. 🙀

Now this may be useful and I am not sure it is a bug, I'll let other people decide. You just don't see where you tap on the screen with the internal one not showing anything, but maybe there are valid use cases.

ProblemType: Bug
DistroRelease: Ubuntu 24.10
Package: gnome-shell 47~beta-1ubuntu2
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.30.0-0ubuntu1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: GNOME
Date: Wed Aug 28 15:53:55 2024
DisplayManager: gdm3
InstallationDate: Installed on 2022-11-26 (641 days ago)
InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Alpha amd64 (20221126)
RelatedPackageVersions: mutter-common 47~beta-3ubuntu4
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

Touch sensors are independent devices from the displays they're glued to. But that said, Mutter should already have a good idea of which display it has associated the touch sensor with. So it should be smart enough to disable it in this case.