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#1 2020-12-14 13:28:26
- jekk
- Member
- Registered: 2019-05-09
- Posts: 6
GDM stuck at login screen even after successful login attempt
Context:
I just upgraded my system after quite a few months. After I restarted post-upgrade, I was greeted with the usual GDM login screen. However, after entering (correct) password, the screen turned black of a second and then return back to the login screen instead of showing my desktop.
I use gdm-prime along with optimus-manager, and have also updated both.
I still can access and login via tty.
Creating and attempting to login using new user via GDM also holds similar result.
Output of journalctl -xu gdm -b: https://pastebin.com/cKRVPh19
Content of Xorg.0.log: https://pastebin.com/RMZgyuyL
Content of Xorg.1.log: https://pastebin.com/Ab79dEMv
I have found similar issue here: https://bugs.archlinux.org/task/65780, which showed similar journalctl log ("gkr-pam: unable to locate daemon control file" and "GdmDisplay: Session never registered, failing"), but it seems to be fixed in past update, whereas for my case, it wasn't.
Any help would be highly appreciated. 
Thank you in advance!
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#2 2020-12-14 13:41:30
- V1del
- Forum Moderator
- Registered: 2012-10-16
- Posts: 25,352
Re: GDM stuck at login screen even after successful login attempt
Complete journal? What has happened here recently is that python 3.9 broke ABI compatibility and you'd need to rebuild optimus-manager (... though it does look like it gets properly triggered).
Last edited by V1del (2020-12-14 13:42:54)
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#3 2020-12-14 14:44:46
- jekk
- Member
- Registered: 2019-05-09
- Posts: 6
Re: GDM stuck at login screen even after successful login attempt
Thanks for the quick reply, here's the full journal from my most recent reboot: https://drive.google.com/file/d/1gGQGut … sp=sharing
I had already pull and build (using makepkg) the latest release of optimus-manager. Do you suggest that i uninstall and rebuild it?
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#4 2020-12-14 15:16:59
- seth
- Member
- From: Won't reply 2 private help req
- Registered: 2012-09-03
- Posts: 77,632
Re: GDM stuck at login screen even after successful login attempt
Dec 14 21:23:16 cain gdm[450]: Gdm: GdmSession: getting session command for file 'gnome.desktop'
Dec 14 21:23:21 cain /usr/lib/gdm-x-session[807]: Unable to run session
Dec 14 21:23:16 cain gdm[450]: Gdm: GdmSession: getting session command for file 'gnome.desktop'What if you chose "gnome on Xorg"?
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#5 2020-12-14 15:35:44
- jekk
- Member
- Registered: 2019-05-09
- Posts: 6
Re: GDM stuck at login screen even after successful login attempt
Dec 14 21:23:16 cain gdm[450]: Gdm: GdmSession: getting session command for file 'gnome.desktop' Dec 14 21:23:21 cain /usr/lib/gdm-x-session[807]: Unable to run session Dec 14 21:23:16 cain gdm[450]: Gdm: GdmSession: getting session command for file 'gnome.desktop'What if you chose "gnome on Xorg"?
How can I do that? Sorry, I don't have many experience in setting up GDM.
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#6 2020-12-14 15:51:36
- seth
- Member
- From: Won't reply 2 private help req
- Registered: 2012-09-03
- Posts: 77,632
Re: GDM stuck at login screen even after successful login attempt
You should™ be able to select the session you want to run in GDMs UI.
I've no experience in using GDM at all…
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