Lightdm fails after update

[moqret]

I have AMD A4 plus radeon integrated graphics and an Nvidia GeForce GT 710 graphics card. After a large update and reboot, lightdm fails. Startx doesn’t work.

I read the pinned post and other posts, but: adding logind-check-graphical=true to lightdm.conf did not work.

Also, adding module amdgpu or radeon to mkinitcpio.conf did not work. Has the syntax changed since the wiki entry? I eventually did it with parentheses, but do I add one or both amdgpu or radeon? I tied it several ways and none worked.

I have tried to debug lightdm and it said that it could not run plymouth.

I don’t know if this is right, but I uninstalled video-nvidia and reinstalled, however I tired to install video-nvidia-470xx, and though video-nvidia insalled, the system said that 470xx does not exist.

Can anyone help with this. Trying to start or force lightdm at TTY did not work. Thanks.

[bogdancovaciu]

@moqret

Nvidia GeForce GT 710

Is no longer supported by video-nvidia that is the 490xxx version family.

@moqret

the system said that 470xx does not exist.

We need the exact commands you used and the exact error you got.
This should help

@philm

Nvidia 495xx driver series drops Kepler support; need to manually switch to 470xx.

mhwd’s video-nvidia now provides 495xx; if you need 470xx you must manually switch before updating, by using the commands below.

With the new 495xx driver series a lot of Wayland adjustments got added. Also Nvidia decided to remove Kepler support . Therefore you may want to switch drivers to 470xx series, which still supports those graphic cards:

sudo mhwd -r pci video-nvidia
sudo mhwd -i pci video-nvidia-470xx

Nvidia 340xx driver series no longer works.

This driver is end of life by NVIDIA, you should not be using it as there are serious security issues with this driver. You have to either get newer supported hardware or switch to Nouveau:

#remove old
sudo mhwd -r pci video-nvidia-340xx
sudo mhwd -r pci video-linux
#install new nouveau
sudo mhwd -i pci video-linux

Reboot after and you're done.

But since you have a dual GPU on a Desktop, is there any Monitor connected to the AMD one? If not, why would you add the amdgpu module to mkinitcpio.conf ?

[moqret]

Thank you, I managed to get it working by using the above commands

sudo mhwd -r pci video-nvidia
sudo mhwd -i pci video-nvidia-470xx

I don’t know what happened before but it worked this time. Thanks for your help.