I don't believe this is related to the exact package being installed, rather the installer itself or a back-end process.
And the various tests for nice values (i.e. Pauls comment #8 : https://launchpad.net/ubuntu/+source/xorg/+bug/68267/comments/8), is there other code to ensure that the value being tested is truly a number? I.e. if the validate_nice_value() subroutine gets sent text (i.e. "x1" rather than "1"), won't this also produce a similar error? How about this: --- validate_nice_value () { _retval=1 # first, try to subtract number from itself to validate numeric input # (expr is noisy, always throw away its output) set +e # Check for blank/null $1 variable. if [ ! -z "$1" ]; then # Exit because we were given a blank line. fi # >>>NOTE 1<<< expr "$1" - "$1" > /dev/null 2>&1 if [ $? -ne 2 ]; then # now check for valid range --- I can't think of a concise way to test for a string versus number to put in at the "NOTE 1" location. Dan -- x11-common have an important debconf bug https://launchpad.net/bugs/68267 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs