Disable BB-BONELT-HDMI using uEnv

I’m rather confused. I cannot seem to disable BB-BONELT-HDMI using the uEnv capemgr.disable_partno optargs arg.

My uEnv.txt line looks like this: optargs=capemgr=capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN


root@StockBBB:~# cat /sys/devices/bone_capemgr.9/slots

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

Yet I can see the uEnv was read:

root@StockBBB:~# cat /proc/cmdline

console=ttyO0,115200n8 capemgr=capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN root=UUID=458951f9-fd96-459c-b1a3-6f2300e0fa58 ro rootfstype=ext4 rootwait fixrtc ip=

Does anybody have any ideas?

As a side question, the firmware for things like the BB-BONE-AUD-01 are apparently compiled into the kernel now. How could I force the dtbo to be loaded from a file?

Thanks in advance for any help.


Interestingly this issue seems to have disappeared in the latest build of ubuntu for BBB. Happy days.

Try this, the capemgr= may be causing a problem

optargs=quiet capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN