HI Doug
I'm running into the same problem here using beagleboard black running
ubuntu-dsktop on a sd card the /sys/class/drm/card0-HDMI-A-1/enabled shows
disabled
cat /proc/cmdline shows this
console=ttyO0,115200n8 video capemgr=capemgr.enable_partno=BB-BONELT-HDMI
root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait
ubuntu@ubuntu-armhf:~$ cat /sys/devices/bone_capemgr.9/slots
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
can u show me your uenv file? thx i try to edit my uenv doesn't work
best
jason
On Tuesday, January 28, 2014 8:39:04 PM UTC-5, doog wrote:
>
> I had looked at it and overlooked what was the problem but you asking and
> my copy/paste made me realize I'd cat'ed it onto the capemgr.disable....
> mesg with a comma instead of separating it. It now works. Thanks for slap
> in the back of the head.
>
> Doug
>
> On Tuesday, January 28, 2014 5:29:22 PM UTC-8, Charles Steinkuehler wrote:
>>
>> On 1/28/2014 6:57 PM, doog wrote:
>> > I'm getting going with LinuxCNC Machinekit on BBB but my first hiccup
>> is
>> > that I can't get HDMI hardware enabled. I have an HDMI-DVI cable and
>> for
>> > whatever reason the hardware has to be told to turn on. With Angstrom I
>> > pass "video=HDMI-A-1:e" on optargs in uEnv.txt but default Debian in
>> > Machinekit doesn't do it.
>> >
>> > is there something I can do to force it on/enabled from the command
>> line?
>> > I've tried shelling in with ssh -X then doing xrandr :0.0 --output
>> HDMI1
>> > --auto but it didn't work.
>> > I'm checking /sys/class/drm/card0-HDMI-A-1/enabled and when booting
>> > Angstrom without a display connected it states "enabled" as it should.
>> > Booting Machinekit it states "disabled".
>>
>> First, are you sure the option is being passed to the kernel? What does
>> "cat /proc/cmdline" return?
>>
>> Second, have you tried the 'e' flag while also specifying a resolution?
>> Try something like:
>>
>> kms_force_mode=video=HDMI-A-1:1024x768@60e
>>
>> ...in /boot/uboot/uEnv.txt.
>>
>> --
>> Charles Steinkuehler
>> [email protected]
>>
>
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