There are many bugs against the Debian X packages, and many of them are old and have long ceased to be actual bugs. Here's the protocol for dealing with them:

  1. Make sure the package the bug is assigned to is correct. Change it if not.
  2. Write the bug submitter and ask them if the bug is still a problem.
    1. To keep the threading download the mbox file using bts show --mbox bugnumber (with bts from devscripts) and open or import the downloaded mbox file ~/.devscripts_cache/bts/bugnumber.mbox with your mail user agent and answer to the corresponding message replying to bugnumber-submitter@bugs.debian.org (the submitter, bugnumber@bugs.debian.org) and all other discussion participants.

    2. If this does not work on your system, use the bugnumber-submitter@bugs.debian.org email address in order to have your mail sent to both the submitter and the bug itself. Ask them if the bug is still a problem.

  3. If they reply that the bug is still a problem, then leave the bug open.
  4. If they reply that the bug is not a problem, or that they can no longer test the bug due to lack of hardware, close the bug with an invitation to reopen it from anyone still experiencing the bug.
  5. If there is no reply, wait two weeks and close the bug if there is still no reply.
  6. If the email address bounces, close the bug with an invitation to reopen it.

Please use the documentation at http://bugs.debian.org to properly use the BTS.

You might also want to look at the more general BugTriage page.