I'm not sure why this bug is still open, but the current isdnutils package does use a filename with a proper .conf extension - so closing the report.
** Changed in: isdnutils (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/340873 Title: modprobe requires .conf filenames since Jaunty To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/acpi-support/+bug/340873/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs