Upgrading to xkeyboard-config-2.30 leads to periodic freezes of unknown origin. (Slackware-current, Dell Latitude E6420-backlit, also Dell Inspiron 7737)
This bug first appeared on the Slackware forum.
xkeyboard-config-2.30 is broken on my machine.
It was updated from 2.29 on the 2020-06-05, and right after that update, I started to experience periodic freezes when the keyboard would just stop responding at all.
This behaviour continued until I downgraded xkeyboard-config two weeks ago, and I had no freezes since.
I have no other specific evidence to indicate where exactly is the problem, but it does seem to exist on my machine.
If anyone is interested, it's Dell Latitude E6420, the backlit keyboard. (There are two modifications, the one with the backlit keys and one with dark ones.)