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sudo (Which I have configured to ask for a password) is rejecting my password (as if I mis-typed it) I am absolutely not typing it incorrectly. I have changed the password temporarily to alphabetic characters only, and it looks fine in plaintext, in the same terminal. I have my username configured thus:

myusername ALL=(ALL) ALL

I am using my password, NOT the root password, which are distinct. Just to be sure, I've tried both (even though I know the root password is not what I should use) - neither work.

I have added myself to the group 'wheel' additionally, and included the following line:

%wheel ALL=(ALL) ALL

I'm kind of at the end of my rope here. I don't know what would cause it to act as though it was accepting my password, but then reject it. I have no trouble logging in with the same password, either at terminal shells, or through the X11 login manager.

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sudo would generate a log message, perhaps in /var/log/secure (I don't know how syslog is configured in arch), explaining what it found wrong. – Mark Wagner Sep 6 '12 at 2:36
Do you have a sudoers entry in /etc/nsswitch.conf? (it could be configured to look up the user incorrectly) – Patrick Sep 6 '12 at 2:47
also the output of sudo -l could help, in arch the sudo log messages go to /var/log/auth.log – Andy H Sep 6 '12 at 2:52

Oh what the heck, here was the issue, I guess?

pacman -S pambase

fixes it.

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