GNOME Bugzilla – Bug 785064
wayland: Allow multitouch on client surfaces with > 2 contact points
Last modified: 2021-07-05 13:49:32 UTC
Upon pressing down with at least three fingers on a multitouch touch screen, mutter will currently cancel touch input on application surfaces by sending wl_touch::cancel() immediately. This effectively means that clients do not have any possibility to receive touch with more than two fingers/contact points at all even if the touch action ends up not being a compositor gesture. It would be better (i.e. allow greater freedom for applications to leverage touch operation) to continue to relay the events until mutter can be sure that a compositor gesture is being triggered. I'm reporting this against the Wayland integration since I have not tested the behavior on X11. It might show similar behavior.
GNOME is going to shut down bugzilla.gnome.org in favor of gitlab.gnome.org. As part of that, we are mass-closing older open tickets in bugzilla.gnome.org which have not seen updates for a longer time (resources are unfortunately quite limited so not every ticket can get handled). If you can still reproduce the situation described in this ticket in a recent and supported software version, then please follow https://wiki.gnome.org/GettingInTouch/BugReportingGuidelines and create a new ticket at https://gitlab.gnome.org/GNOME/mutter/-/issues/ Thank you for your understanding and your help.