+1 on Ubuntu 13.04 with kernel 3.8! Upto Ubuntu 11.04 it worked as expected. If this is a regression bug between 3.2.0.41.49 and 3.2.0.43.51 it would be recommended to report it upstream on kernel.org ...
My symptoms: No matter if I take /media/cdrom or /cdrom or /dev/sdb or /dev/sdb1: $ sudo hdparm -E 24 /cdrom ... setting cd/dvd speed to 24 SET_STREAMING/CDROM_SELECT_SPEED both failed: Inapropriate ioctl for device My known alternative does not work either: $ sudo eject -vx 24 ... eject: CD-ROM select speed command failed: Invalid argument -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181874 Title: setting drive speed: bad/missing CDROM/DVD-speed value (0..255) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/hdparm/+bug/1181874/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs