Unknown escape sequence in tails-gdm-failed-to-start.service
The journal of a booted 4.0~rc1 image contains this message:
/lib/systemd/system/tails-gdm-failed-to-start.service:11: Ignoring unknown escape sequences: "MAX_LENGTH=254 ; PREFIX="Error starting GDM with your graphics card: " ; SUFFIX=". Please take note of this error and visit https://tails.boum.org/gdm for troubleshooting." ; MAX_VIDEO_CARD_LENGTH=$(($MAX_LENGTH - $(echo -n "$PREFIX$SUFFIX" | wc -c))) ; VIDEO_CARD=$(lspci -d::0300 -nn | sed -E "s,.* VGA compatible controller \[0300\]: *,," | cut -c "1-$MAX_VIDEO_CARD_LENGTH") ; /bin/plymouth display-message --text="$PREFIX$VIDEO_CARD$SUFFIX" "
FTR and FWIW: this has been the case since I implemented this feature. I did not manage to fix it back then, but (at least back then) it did not prevent this feature from working. I don't recall testing it on Buster though, so possibly with a newer systemd things are different.