I got the window again when I tried to use a damaged CD. So my uneducated guess is this error comes when the OS is not able to read some data off the disc sectors. I lightly sandpapered an unwanted CD and tried it and found this is replicable. It might depend on the sensitivity of the drive reading the disc and hence the same disc might not give error in one machine but do so in a second machine.
-- DBus error when mounting CD https://bugs.launchpad.net/bugs/291876 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs