Did you check for the troubleshooting section on the support Wiki? http://www.elinux.org/Beagleboard:BeagleBoneBlack Look under HDMI.
DRM does not use the optargs. It only uses the EDID information it reads form the display to set the resolution. Gerald On Fri, Dec 13, 2013 at 4:19 PM, <[email protected]> wrote: > Hi friends, > > Very disappointed... after several hours of trying, the HDMI output is not > working. > The board has latest flash image 2013.09.04 as shipped, no modifications, > no booting from SD. > > In fact, I have nothing in > > cat /proc/cmdline > > root@beaglebone:~# cat /proc/cmdline > console=ttyO0,115200n8 quiet drm.debug=7 root=/dev/mmcblk0p2 ro > rootfstype=ext4 rootwait > > where is the video argument? > > I've tried all things kindly explained by this guy here: > http://bb-lcnc.blogspot.ro/2013/06/force-beaglebone-black-hdmi-resolution.html > > I use a reasonable HDMI to VGA adapter: > http://www.delock.com/produkte/G_65347/merkmale.html?setLanguage=en > > I even tried to pass arguments to u-boot but they don't appear after booting > process > cat /proc/cmdline > > setenv optargs video=HDMI-A-1:640x480@60 > > Any idea please ?! > > > > > -- > 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]. > For more options, visit https://groups.google.com/groups/opt_out. > -- 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]. For more options, visit https://groups.google.com/groups/opt_out.
