I am/was affected by this bug (or at least the same symptoms) on a Dell
XPS 13 9343. It got resolved by updating the BIOS from version A15 to
version A20. I got the idea from reading the comments at
https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1753518,
which may be related to this.
I'm pretty sure it is no. 46 in slideshow-mint-kde (this one:
https://translations.launchpad.net/linuxmint/isadora/+pots/slideshow-
mint-kde/de/46/+translate). I activated now the suggested translation
(used in slideshow-mint, where it apparently was correctly
translated).
Oh, I just saw that in
