Pen tools not working

[Stephen Liu]

(12-09-2023, 03:12 PM)Ofnuts Wrote: You pencil is using the "Clipboard image" brush so it depends on the clipboard contents (and from the brush thumbnail they appear to be an empty image). Try the standard round brush (2. Hardness 100) and use 100% opacity

Also, the pencil tool dialog has a lot more options, and some of them would also cause problems, so better show the whole dialog in your screenshots.

There are not many options here for selection,

Where is 2. Harndness 100?  Please see attached screenshot

It is very strange to me.  This Ubuntu 22.04.3 desktop is running as Host of VirtualBox.

Other Ubuntu 22.04.3 VMs also running GIMP version 2.10.30, there is no pencil problem.

This problem just happens recently.  It worked without problem before

Regards