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Using ubuntu 8.04, Open the logout/shutdown/switch user/etc. dialog by
any method, such as from the main menu, by clicking on logout icon in
panel, or by pressing Ctrl-Alt-Del. Close the dialog by pressing the ESC
key. If you now press Ctrl-Alt-Backspace, the system will reboot rather
than just killing the X server.
If the logout dialog is closed by clicking on "cancel" or pressing ENTER
on the dafault highlighted cancel button, or another action such as Lock
Screen is selected, then a subsequent Ctrl-Alt-BS restarts X as
expected. This was observed on 2 different systems, one with Intel
integrated graphics, the other ATI integrated graphics. Same behavior
was observed using both metacity and compiz window managers, and any
choice of visual effects from the System/Preferences/Appearance/Visual
Effects menu.
Review of log messages after a restart shows segfaults in various
programs and gdm complaining that "something went very wrong" and it is
bringing down the system.
If I open a terminal with Ctrl-Alt-F1, and manually kill gdm, then start
X again with the startx command, everything works as expected;
Regardless of what method is used to close the logout dialog, a
subsequent Ctrl-Alt-BS keypress kills X but does not cause a reboot.
This problem had been present since release of ubuntu 8.04 and continues
with latest updates installed as of 6/13/2008.
** Affects: gdm (Ubuntu)
Importance: Undecided
Status: New
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Closing logout dialog with ESC key causes reboot on later X restart
https://bugs.launchpad.net/bugs/239992
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Bugs, which is subscribed to gdm in ubuntu.
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