From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux 2.4.2-2 i686; en-US; rv:0.9.1)
Description of problem:
AltGr-<key> only generates <key>, thus making it impossible to enter
symbols that are only accessible in conjunction with AltGr.
Steps to Reproduce:
1. Install RHL 7.0
2. Go to runlevel 5
3. try to enter a symbol that is accessible by pressing AltGr
Actual Results: AltGr is ignored, thus some special signs (i.e. @ on a
French keyboard) are not accessible
Expected Results: AltGr should work the same way in gdm as it does when
logged into X.
I'm not really sure how AltGr gets set up normally - Mike is there some file
that is supposed to get loaded with the keymap in it?
*** Bug 48061 has been marked as a duplicate of this bug. ***
Fixed in rawhide. Believed to have been an X bug where grabbing the keyboard
broke AltGr. gdm no longer grabs the keyboard in rawhide.