I investigated how I can make the X server not switch vt on Ctrl-Alt-Fn and instead let an app get the event (the xen graphical console, to be concrete). I figured out how to do this by tweaking the XKB compat map and remove all SwitchScreen functions, as can be seen in the attached demo program. Then I tried to use the same trick for TerminateServer (Ctrl-Alt-Backspace), but it does not work. Even if I set Option "HandleSpecialKeys" "Never" in xorg.conf, the X server insists on killing itself on Ctrl-Alt-Backspace, independently of the presence of TerminateServer actions in the XKB maps. And setting Option "DontZap" "on" just turns of the TerminateServer action altogether. What I would expect to happen is that if HandleSpecialKeys is "Never", I should be able to control the TerminateServer action via XKB. I haven't tested if this problem also exists for the other special keys (grab breaking, resolution changing, etc)
Created attachment 139999 [details] demo app
Fedora Core 6 is no longer supported, could you please reproduce this with the updated version of the currently supported distribution (Fedora 7, 8, or Rawhide)? If this issue turns out to still be reproducible, please let us know in this bug report. If after a month's time we have not heard back from you, we will have to close this bug as CANTFIX. Setting status to NEEDINFO, and awaiting information from the reporter. [This is mass-filed message to all open Fedora Core 6 bugs related to Xorg or Gecko. If you see any other reason, why this bug shouldn't be closed, please, comment on it here.]
Since there are insufficient details provided in this report for us to investigate the issue further, and we have not received feedback to the information we have requested above, we will assume the problem was not reproducible, or has been fixed in one of the updates we have released for the reporter's distribution. Users who have experienced this problem are encouraged to upgrade to the latest update of their distribution, and if this issue turns out to still be reproducible in the latest update, please reopen this bug with additional information. Closing as INSUFFICIENT_DATA. {This is mass-closing of all obsolete bugs; if this bug was in your opinion closed by mistake, please, reopen it with additional information; thanks a lot and I am sorry for bothering you in such case.}