with raspberry it's really much simpler!! :-( => I was successfully set up the output by simply adding a command"hdmi_cvt=1920 720 60 0 0 0 0" in config.txt
Am Donnerstag, 23. Juni 2016 16:53:16 UTC+2 schrieb epi kao: > > 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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/db3158a6-09aa-49a9-aef0-31d1faf9210d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
