I get this problem on a recent installation of Edgy:
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
readcd: Permission denied. Cannot open '/dev/sg0'. Cannot open SCSI driver.
readcd: For possible targets try 'readcd -scanbus'. Make sure you are root.
readcd: For possible transport specifiers try 'readcd dev=help'.
I checked and the CD is not mounted:
$ mount
/dev/sda1 on / type ext3 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
/sys on /sys type sysfs (rw,noexec,nosuid,nodev)
varrun on /var/run type tmpfs (rw,noexec,nosuid,nodev,mode=0755)
varlock on /var/lock type tmpfs (rw,noexec,nosuid,nodev,mode=1777)
procbususb on /proc/bus/usb type usbfs (rw)
udev on /dev type tmpfs (rw,mode=0755)
devshm on /dev/shm type tmpfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
lrm on /lib/modules/2.6.17-10-generic/volatile type tmpfs (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
$
I get this problem on a recent installation of Edgy:
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
Error trying to open /dev/sg0 exclusively (Permission denied)... retrying in 1 second.
readcd: Permission denied. Cannot open '/dev/sg0'. Cannot open SCSI driver.
readcd: For possible targets try 'readcd -scanbus'. Make sure you are root.
readcd: For possible transport specifiers try 'readcd dev=help'.
I checked and the CD is not mounted:
$ mount remount- ro) nosuid, nodev) nosuid, nodev) nosuid, nodev,mode= 0755) nosuid, nodev,mode= 1777) 2.6.17- 10-generic/ volatile type tmpfs (rw) fs/binfmt_ misc type binfmt_misc (rw)
/dev/sda1 on / type ext3 (rw,errors=
proc on /proc type proc (rw,noexec,
/sys on /sys type sysfs (rw,noexec,
varrun on /var/run type tmpfs (rw,noexec,
varlock on /var/lock type tmpfs (rw,noexec,
procbususb on /proc/bus/usb type usbfs (rw)
udev on /dev type tmpfs (rw,mode=0755)
devshm on /dev/shm type tmpfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
lrm on /lib/modules/
binfmt_misc on /proc/sys/
$