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I am trying to log in using corect uid and password but it loops and always come back to the authentication black screen. Ctrl+alt+F2 using the exact same uid+pwd works well.

It happened just after I did install KDE PLASMA using Application Center tool.

Any idea ?

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  • Have you tried checking the output of /var/log/auth.log?
    – moo
    Commented Apr 19 at 5:11
  • No...But just did it....Then: gdm-password ]: gkr-pam: unable to locate daemon control file. gdm-password]: gkr-pam: stashed password to try later in opened session
    – Benoît Tremblay
    Commented Apr 19 at 12:44
  • askubuntu.com/questions/1144153/… i don't think that's an error just info
    – moo
    Commented Apr 19 at 14:05
  • Well.. Looking closely at the informations included in this file I can see that my attemp to log in immediately after that using Ctrl+Alt+F2 is successfull. So there is no more "informations / lines " between those 2 lines saying "Unable to locate daemon control file" and this "Stashed password" message which is also informational only. I just dont know where to start... Seems that GDM is the problem.. No ? Re-install GDM 45.2 ? If so How to do that ? Thanks again for your help. Brgds.
    – Benoît Tremblay
    Commented Apr 19 at 19:10

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