wacom tablet disturbs unity background, color scheme and keyboard shortcuts

[Péter Prőhle]

If I make a fresh 20.04 install from scratch, with the default gnome desktop, then plugging the wacom tablet below does not disturb the background, color scheme and keyboard shortcuts, like ctrl+alt+T give a terminal.

But as soon as I upgrade this install with ubuntu-unity-desktop, and I switch to use the corresponding LightDM, then the "system setting" (in the upper right corner) is not able to handle the background (to set it to a solid color, or a photo, it remains solid black), it is not able to set the theme from the default dark to the lighter "radiance", and the worst of all: the former keyboard bindings, like "ctrl+alt+T gives a terminal" are no longer executed, they are still there in the listing, we can change to what keystroke is e browser or a terminal is bind, but will not work if I press the usual combination.

However, the tablet itself works immediately like a dumb mouse device.

This tablet is according to lspci: ID 056a:0378 Wacom Co., Ltd CTL-6100WL [Intuos BT (M)]

Somehow plugging the Wacom to USB disables, paralyses a nice diverse selection of features, but only in the case of Unity, and NOT in the case of the default Gnome.

[Péter Prőhle (prohlep)]

If Wacom is plugged, then neither "the text entry / switch input source" works, even if I want to switch the input source by mouse in the upper right corner.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

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[Péter Prőhle (prohlep)]

If Wacom is plugged, then neither the settings / wacom tab comes up, but if the Wacom tablet is NOT plugged, then the settings / wacom tab comes up and reports that currently no Wacom device is connected.

Unity shell is essentially disturbed with the Wacom tablet mentioned above, while Gnome shell works well.

[Péter Prőhle (prohlep)]

the problem is still there, over the x11 based unity

[Péter Prőhle (prohlep)]

Nobody except for me is uging Wacom tablet over Ubuntu Unity?