how to change screen resolution

GoogleGroups
1

Hi,

How to change the screen resolution on BBB with latest image and HDMI monitor connected?
Currently working with 1920x1080 by default, but I need a lower resolution - 640x480@75.

Jan

2

I’ve modified the file /etc/xdg/lxsession/LXDE/autostart by adding @xrandr -s 640x480@75
It looks like this now:

@lxpanel --profile LXDE
@pcmanfm --desktop --profile LXDE
@xrandr -s 640x480@75

Reboot, but still doesn’t work.
Any help, please.

Jan

3

any hints in your log files ?

what does /var/log/Xorg.0.log indicate?
do you know if your monitor supports that resolution ?
can you get that resolution with out booting to the X-11 gui?
what is your uEnv.txt file?

4

Edit uEnv.txt and set a custom resolution using the kernel command line:

http://blog.machinekit.io/2013/07/custom-hdmi-resolution.html

5

thanks, that works. Do you know if possible and if yes how to change the setting for the mouse? - I want it to be scan by the system as frequently as possible.