Excuse me everybody, I have problem with my ubuntu beaglebone black. I have finish installing ubuntu arm and ubuntu-desktop to show it on monitor but can’t show. When I execute this command: "cat /proc/cmdline"
not show "console=ttyO0,115200n8 video=HDMI-A-1:640x480@60 root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait fixrtc ip=…"
it just show *“console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait fixrtc ip=…”*
Can everybody help me for this problem. What should i do for this HDMI problem. Thanks alot
Excuse me everybody, I have problem with my ubuntu beaglebone black. I have finish installing ubuntu arm and ubuntu-desktop to show it on monitor but can’t show. When I execute this command: “cat /proc/cmdline”
not show “console=ttyO0,115200n8 video=HDMI-A-1:640x480@60 root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait fixrtc ip=…”
it just show *“console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait fixrtc ip=…”*
Can everybody help me for this problem. What should i do for this HDMI problem. Thanks alot
There are several places you can look:
uEnv.txt
Stop u-boot at the command prompt and do a printenv
Use a console debug cable and look at the cmdline displayed
If you don’t have a console debug cable, do a dmesg after to login and look for cmdline. I expect this to be the same as /proc/cmdline
Usually the video setting are set in uEnv.txt file. You probably want something like this:
kms_force_mode=video=HDMI-A-1:640x480@60
You should also see $(kms_force_mode) in one of the bootargs lines.