i am also trying this, but always "no protocol specified" ..... i am frustated :-( ..
root@beaglebone:/# export XAUTHORITY='ls /var/run/gdm/auth-for-root-*/database' root@beaglebone:/# export DISPLAY=:0.0 root@beaglebone:/# xrandr --ouptut HDMI-0 --mode 720x480 --rate 60 xrandr: unrecognized option '--ouptut' Try 'xrandr --help' for more information. root@beaglebone:/# xrandr --output HDMI-0 --mode 720x480 --rate 60 No protocol specified Can't open display :0.0 root@beaglebone:/# export DISPLAY=:'0.0' root@beaglebone:/# xrandr --output HDMI-0 --mode 720x480 --rate 60 No protocol specified Can't open display :0.0 root@beaglebone:/# xrandr --output HDMI-0 --mode 1280x800 --rate 60 No protocol specified Can't open display :0.0 Am Donnerstag, 23. Juni 2016 16:07:58 UTC+2 schrieb epi kao: > > Hello all > > I have a TFT with 1920x720, and I try to control this with the HDMI from > my BBB. > > I am trying with cmdline > cmdline=coherent_pool=1M quiet cape_universal=enable > video=HDMI-A-1:1920x720M@30e > > this disable the hdmi-output > > but i think the output is randomly... actually the resolution is 640x480, > it seems that my BBB takes the resolution from previous adjustment in the > uEnv.txt. But now the resolution that i have adjust is 800x480... and it > takes 640?? why > > anyway how can I know which resolution works surely? > > thanks > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/270cebbf-3672-417e-ad85-8ff37db6824e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
