Raspberry PI4B and screen resolution porblems

ARM Technical Assistance
1

currently installed Manjaro KDE Plasma on the rpi4b.
As with most distros, my tv/monitor only seems to work at 1368x768.
Therefore I usually have to add this to the config.txt to get it working.
hdmi_group=2
hdmi_mode=39

But with Manjaro, this works only upto the Login Screen. Once entering my pw it reverts back to a blank screen.
This does not happen with some other distros.

If I cannot get in to change settings, how can i get this login past this point.

I have been reading other post that suggest the Mesa drivers, but not sure if this is the problem and cant even get in to a command prompt to try any other suggestions.

Please help…

2

This is what I use. Assuming you are plugged in to the first hdmi port on the board:

hdmi_mode:0=39
hdmi_group:0=2
hdmi_force_mode:0=1
hdmi_ignore_edid:0=0xa5000080

ADDED:

dtoverlay=vc4-kms-v3d has never worked here with out xf86-video-fbturbo-git installed or it gives a black screen at the login screen. I always use dtoverlay=vc4-fkms-v3d

ssh into it.

1 Like
3

Nice!!
Thank You, I’m in.

4

Thanks!

i had similar issue with an other display (Joy-it RB-LCD10-2 1280x800)

dtoverlay=vc4-kms-v3d

hdmi_mode:0=28
hdmi_group:0=2
hdmi_force_mode:0=1
hdmi_ignore_edid:0=0xa5000080
1 Like