Please take these two last alternatives:
Fifth alternative: SUBSYSTEM=="drm", KERNEL=="card[0-9]*", DRIVERS=="nvidia", TAG+="master-of-seat"
Sixth alternative: SUBSYSTEM=="drm", KERNEL=="card[0-9]*", ATTRS{vendor}=="0x10de", DRIVERS=="nvidia", TAG+="master-of-seat"
Please take these two last alternatives:
Fifth alternative: ="card[ 0-9]*", DRIVERS=="nvidia", TAG+="master- of-seat"
SUBSYSTEM=="drm", KERNEL=
Sixth alternative: ="card[ 0-9]*", ATTRS{vendor} =="0x10de" , DRIVERS=="nvidia", TAG+="master- of-seat"
SUBSYSTEM=="drm", KERNEL=