i don't see that you started the X server---it needs to be running for any of this to work.
On Tue, Feb 14, 2017 at 7:19 AM, Sajeev Krishnan <sajeev...@laxven.com> wrote: > Hi, > > > I am working with a Beaglebone Black with Debian Jessie. > > I am trying to interface with an LG 19M38H - B LCD display through its HDMI > port. > > 1) When I am running the command > > sudo apt-get install read-edid xserver-xorg-video-fbdev > xserver-xorg-video-modesetting x11-xserver-utils > > I am getting the following message > > root@localhost:~# sudo apt-get install read-edid xserver-xorg-video-fbdev > xserver-xorg-video-modesetting x11-xserver-utils > Reading package lists... Done > Building dependency tree > Reading state information... Done > read-edid is already the newest version. > x11-xserver-utils is already the newest version. > xserver-xorg-video-fbdev is already the newest version. > xserver-xorg-video-modesetting is already the newest version. > 0 upgraded, 0 newly installed, 0 to remove and 204 not upgraded. > > 2) Then I tried xrandr. It is giving the following message > > root@localhost:~# xrandr > Can't open display > > 3) I did the following to solve the issue, after exploring in forums > > a)defining environment variable DISPLAY > > root@localhost:~# export DISPLAY=:0.0 > root@localhost:~# xrandr > Can't open display :0.0 > root@localhost:~# > > b)defining environment variable XAUTHORITY > > root@localhost:~# export XAUTHORITY=/root/.Xauthority > root@localhost:~# xrandr > No protocol specified > Can't open display :0.0 > root@localhost:~# > > c) used the command xhost local:root > > root@localhost:~# xhost local:root > No protocol specified > xhost: unable to open display ":0.0" > root@localhost:~# xrandr > Can't open display :0.0 > > d) used the command xhost + > > root@localhost:~# xhost + > xhost: unable to open display ":0.0" > root@localhost:~# xrandr > No protocol specified > Can't open display :0.0 > > e) Also I changed the host name from beaglebone black to localhost to solve > the issue. > > But nothing is working. Thanks in advance for the help. > > Thanks and Regards, > > Sajeevan.K > > -- > 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/f50bcdd7-d36b-42cd-8bf3-5b323de97b28%40googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- 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/CAC%3D1GgFwb%3DFzcxZRwkUw%3DcCr%2BHvO4UgvE4cbu3s2evfM93RW4A%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
