Public bug reported:
A line in /etc/X11/xorg.conf seems to be mapping the right Alt key incorrectly
on certain keyboards.
Section "InputDevice"
Identifier "Generic Keyboard"
Option "XkbOptions" "lv3:ralt_switch" <-- This is the bad
line.
With it, the right Alt key will not perform as expected: Alt+Tab,
Ctrl+Alt+Backspace, etc, do not work with this key. Commenting out the
line solves the problem. I don't know what that line is intended to do
- it has something to do with Level 3 but I don't understand that. All
I know is that the key wasn't working.
Laptops known to be affected:
Dell Inspiron 6400
Dell Inspiron 630m
IBM T42p
Sources:
http://ubuntuforums.org/showthread.php?t=412157
http://ubuntuforums.org/showthread.php?t=287318&page=2
This bug has been around since at least Oct 2006 and affects both Edgy
and Feisty beta, and presumably Feisty since I only installed Feisty
beta about 2 weeks before the release.
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: Unconfirmed
--
right Alt key disabled on certain laptops
https://bugs.launchpad.net/bugs/107768
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