Bug 86109 - Ctrl+Alt+Backspace to kill X server doesn't work
Ctrl+Alt+Backspace to kill X server doesn't work
Product: Red Hat Linux
Classification: Retired
Component: XFree86 (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Mike A. Harris
David Lawrence
Depends On:
  Show dependency treegraph
Reported: 2003-03-14 02:58 EST by H. Peter Anvin
Modified: 2007-04-18 12:52 EDT (History)
0 users

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2003-04-06 01:58:29 EST
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Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Xmodmap file used (3.52 KB, text/plain)
2003-03-14 02:59 EST, H. Peter Anvin
no flags Details

  None (edit)
Description H. Peter Anvin 2003-03-14 02:58:57 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3b) Gecko/20030211

Description of problem:
Pressing Ctrl+Alt+Backspace doesn't kill the X server.  This has been observed
on three different system running Phoebe-3.

What is really odd is that Ctrl+Alt+Fx to switch VT works on exactly one of
these three systems, on the other two it is broken as well.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Log in using the graphical login in a KDE session
2. Press Ctrl+Alt+Backspace to zap the X server

Actual Results:  Nothing

Expected Results:  The X server should have died and the login screen reappeared

Additional info:
Comment 1 H. Peter Anvin 2003-03-14 02:59:29 EST
Created attachment 90597 [details]
Xmodmap file used
Comment 2 Mike A. Harris 2003-03-14 18:45:09 EST
There were some 'issues' with xkb all along the latter months of XFree86
4.2.99.x, but all known issues were fixed prior to the final release.

Please test 4.3.0-2.1 from ftp://people.redhat.com/mharris/testing/unstable
and update me if it fixes it for ya.
Comment 3 Mike A. Harris 2003-04-06 01:58:29 EST
I can kill the X server using CTRL-ALT-BS in a fresh Red Hat Linux install
on an Intel Northwood system with an i865 chipset.  I believe the problem
was fixed between Phoebe beta 3 and the final release.

If the problem still occurs for you with RHL 9, please reopen.

Comment 4 H. Peter Anvin 2003-04-06 05:04:38 EDT
I have identified that the problem is with the Xmodmap file -- unlike previous
versions of XFree86, the current XFree86 seems to require explicit Xmodmap
entries for the zap functions.  It claims they are synthesized if not present,
but that doesn't actually seem to be the case.

Adding the relevant XF86_* entries to the Xmodmap file resolved the issue.
Comment 5 Mike A. Harris 2003-04-06 07:27:26 EDT
Ok, thanks for the update hpa.

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