При установке с помощью скрипта доходит до выбора принтера. Но 1120 там в списке вообще нет.
Вы читали текст скрипта?
#ppd files and printer models mapping
declare -A LASERSHOT=([LBP-810]=1120 [LBP1120]=1120 [LBP1210]=1210 \
[LBP2900]=2900 [LBP3000]=3000 [LBP3010]=3050 [LBP3018]=3050 [LBP3050]=3050 \
[LBP3100]=3150 [LBP3108]=3150 [LBP3150]=3150 [LBP3200]=3200 [LBP3210]=3210 \
[LBP3250]=3250 [LBP3300]=3300 [LBP3310]=3310 [LBP3500]=3500 [LBP5000]=5000 \
[LBP5050]=5050 [LBP5100]=5100 [LBP5300]=5300 [LBP6000]=6018 [LBP6018]=6018 \
[LBP6020]=6020 [LBP6020B]=6020 [LBP6200]=6200 [LBP6300n]=6300n [LBP6300]=6300 \
[LBP6310]=6310 [LBP7010C]=7018C [LBP7018C]=7018C [LBP7200C]=7200C [LBP7210C]=7210C \
[LBP9100C]=9100C [LBP9200C]=9200C)