The problem is most probably in the Canon driver and not in Ubuntu's printing infrastructure. This is NOT a duplicate of bug 372166 nor of bug 382379.
Can you print a job and when the job has disappeared from the print queue attach /var/log/syslog?
Can you also attach your /etc/cups/ppd/LBP3000.ppd?
Can you also post the output of
lpinfo -m | grep -i LBP lpinfo -v dpkg -L cndrvcups-common | grep -i ppd dpkg -L cndrvcups-capt | grep -i ppd
The problem is most probably in the Canon driver and not in Ubuntu's printing infrastructure. This is NOT a duplicate of bug 372166 nor of bug 382379.
Can you print a job and when the job has disappeared from the print queue attach /var/log/syslog?
Can you also attach your /etc/cups/ ppd/LBP3000. ppd?
Can you also post the output of
lpinfo -m | grep -i LBP
lpinfo -v
dpkg -L cndrvcups-common | grep -i ppd
dpkg -L cndrvcups-capt | grep -i ppd