could be due to a buggy application, you can use lsof to try figuring what is still open on the device
-- Can not unmount USB volume, if some file was opened from it and the used application is still running https://bugs.launchpad.net/bugs/181110 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
