issue booting from eMMC aftre downgrading from kernel 4.9.6-bone4 to 4.1.21-bone-rt-r20

[malkowki]

Hi fellows,

I am having issue booting from eMMC after downgrading from Kernel 4.9.6-bone4 to 4.1.21-bone-rt-r20.
I am using a beaglebone black REV C with Debian 8 distibution, I had trouble communicating via USB LAN under address 192.168.7.2 then I decided to downgrade to older version that I used where the USB port was working perfectly. unfortunately I got the booting message as described in the picture.
Did someone has faced the same issue? is there a way to access the uENV.txt again in order to fix this?

I appreciate any help.
 

[Robert Nelson]

boot with a normal microSD image, and mount the eMMC..

Please share your current /boot/uEnv.txt

Regards,

--
Robert Nelson
https://rcn-ee.com/

[malkowki]

Hi Robert,

I have booted my board with the latest debian image 4.4.30-ti-r64 and mounted the emmc.
Please find attached how the uEnv.txt was set :

[malkowki]

uname_r=4.1.21.bone-rt-r20
optargs=quiet drm.debug=7 capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN

#PART for the choice of the module activated (HDMI/EMMC)
#dtb=am335x-boneblack-overlay.dtb #activate BOTH
dtb=am335x-boneblack-emmc-overlay.dtb #activate EMMC but disable HDMI

#PART for loading the default dts for the different peripherals
## Attention, the order in cape is important
#cape_enable=bone_capemgr.enable_partno=BB-UART4,BB-PWM-CONFIG,BB-GPIO-CONFIG,BB-PRU-CONFIG
cape_enable=bone_capemgr.enable_partno=BB-SPI0-01


#optargs=quiet drm.debug=7 capemgr.enable_partno=BB-SPI0-01
uuid=dbc9a966-34f4-4e4b-bf18-9de885ebd3ae

[Robert Nelson]

On Tue, Feb 7, 2017 at 8:17 AM, malkowki <bmb.tec...@gmail.com> wrote:
> uname_r=4.1.21.bone-rt-r20

"4.1.21-bone-rt-r20"

> optargs=quiet drm.debug=7 capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN
>
> #PART for the choice of the module activated (HDMI/EMMC)
> #dtb=am335x-boneblack-overlay.dtb #activate BOTH
> dtb=am335x-boneblack-emmc-overlay.dtb #activate EMMC but disable HDMI
>
> #PART for loading the default dts for the different peripherals
> ## Attention, the order in cape is important
> #cape_enable=bone_capemgr.enable_partno=BB-UART4,BB-PWM-CONFIG,BB-GPIO-CONFIG,BB-PRU-CONFIG
> cape_enable=bone_capemgr.enable_partno=BB-SPI0-01
>
>
> #optargs=quiet drm.debug=7 capemgr.enable_partno=BB-SPI0-01
> uuid=dbc9a966-34f4-4e4b-bf18-9de885ebd3ae

[Beninio Mbila]

Hi Robert,

My bad. Just a silly mistake.

Thanks a lot!

--

Beninio Mbila