https://unix.stackexchange.com/questions/685039/x11-how-to-invert-axis- on-touchscreen-matrix has commands that seem to work (xinput set-prop <id> "Coordinate Transformation Matrix") but the specific values listed there still have the vertical access reversed.
'xinput set-prop "UGTABLET 11.6 inch PenDisplay Pen (0)" "Coordinate Transformation Matrix" 0 1 0 1 0 0 0 0 1' appears to work but only if the tablet is configured as the top display. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/2014957 Title: XP Pen 13 tablet has swapped axes for input To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/2014957/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
