Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have KDE installed in my archLinux with kdm to login. But it always shows a notification dialog with "authentication failed" about every 2 minutes.

I use a kdm to login and I have enter the user name and password. Why does it show "authentication failed"?

Anyone who encountered this problem can help me?

Finally this problem disppear because I reinstall kde.Thanks for all of you!


migration rejected from stackoverflow.com Jan 21 '14 at 7:10

This question came from our site for professional and enthusiast programmers. Votes, comments, and answers are locked due to the question being closed here, but it may be eligible for editing and reopening on the site where it originated.

closed as off-topic by slm, Anthon, Thomas Nyman, strugee, jasonwryan Jan 21 '14 at 7:10

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions describing a problem that can't be reproduced and seemingly went away on its own (or went away when a typo was fixed) are off-topic as they are unlikely to help future readers." – slm, Anthon, Thomas Nyman, strugee, jasonwryan
If this question can be reworded to fit the rules in the help center, please edit the question.

Are you sure the issue is with KDM, and not with a Telepathy account, KMail or a similar application? (since you can actually log into the session, else you would not see the notifications I presume) – Gallaecio Nov 10 '12 at 17:25
I'm sure the issue is with KDM because I made it run as a daemon. – itlodge Nov 11 '12 at 10:43

This is indeed very annoying. In my case on Fedora 19, the culprit was PackageKit. Apparently if you mistype the root password once, PackageKit will forever bother you with anonymous "Authentication Failed" popup messages.

Removing packagekit is a brute force solution:

sudo yum remove packagekit

You will need to manually update your system with your package manager, e.g. yum.


Not the answer you're looking for? Browse other questions tagged or ask your own question.