I can't login to display manager gdm

Sansanmosh · February 3, 2019, 1:08pm

how to switch to default gdm manually by code?
Because i has been make mistake delete gdm and gdm-session, and now im stuck on blank screen, Sorry, my English is bad🙏

altman · February 3, 2019, 2:19pm

Your English seems good to me.

Have a look at this link here, hope that it can help you out:

https://forum.archlabslinux.com/search?q=%20can%E2%80%99t%20login%20to%20display%20manager

Head_on_a_Stick · February 3, 2019, 2:59pm

Can you post which command(s) you used to do this?

Have you tried re-installing the package?

pacman -Syu gdm

Try using <Ctrl>+<Alt>+F2 to get to a spare console screen from which you can run the command.

sevenday4 · February 3, 2019, 5:32pm

@Sansanmosh I have pm you.

Sansanmosh · February 4, 2019, 1:25am

@sevenday sorry for duplicate content

Sansanmosh · February 4, 2019, 1:26am

@altman thanks bro i wil try it…

Sansanmosh · February 4, 2019, 1:33am

i record my problem to video, my problem after booting can’t load to gdm stuck blank screen

Sansanmosh · February 4, 2019, 1:34am

https://streamable.com/iuo03 (link video)

Sansanmosh · February 4, 2019, 1:59am

i dont get the spare console i`m just still stuck on black screen

Chris · February 4, 2019, 3:16am

Here are the steps I would take.

When the screen is blank like that, go to a virtual term (Control Alt F2, for example)
Login as root
Check to see if GDM is actually running: ps ax | grep gdm (I am guessing on the gdm part as its been a very long time sine I ran Gnome)
If it does not show running, you could try enabling the service: systemctl enable gdm
If the service is running, skip to step 6
If you enabled the service from step 3, start the service: systemctl start gdm
Reflecting on an above post, remove gdm: pacman -R gdm
Then reinstall gdm: pacman -S gdm
Enable the service: systemctl enable gdm
Reboot
Report back your results.

Head_on_a_Stick · February 4, 2019, 7:58pm

OK, you will have to load the “live” ISO image and chroot in.

Mount your main system partition first:

mount /dev/sdXY /mnt

Replace X & Y with the drive letter and partition number for your root partition.

Then chroot in:

arch-chroot /mnt

From there you can pacman -Syu gdm to try re-installing the display manager.

Once that’s done, exit & reboot:

exit
reboot

hth

Sansanmosh · February 6, 2019, 1:12am

in my problem i can`t go to a virtual term ( ctrl + alt + F2 ) just stuck blank bro

Sansanmosh · February 6, 2019, 1:13am

i will try it i hope it works

Sansanmosh · February 6, 2019, 4:02am

after command (arch-chroot) /mnt i can’t install pacman or ping google etc

Head_on_a_Stick · February 6, 2019, 8:05am

Is the installation spread over several partitions? If so then you need to mount the other partitions (under /mnt) before chrooting in.

If not then I suppose you could try calling the full path (/usr/bin/pacman -Syu gdm) but I think arch-chroot sources /etc/profile so PATH should be set.

We still don’t know what you did to “delete gdm and gdm-session”, can you tell us what command(s) you used?