Client can't run the TX ticker

[Graham]

Running BBB Rev.C, Debian jessie test snapshot12-31
un-modified, other than a new custom .dtb file.

I am trying to build a new .dtb file for a custom application,
using the dtb-rebuilder instructions.  Everything builds without
error, but when I reboot, the command line spews:

[    5.526488] Client can't run the TX ticker
[    5.531073] Client can't run the TX ticker
[    5.535635] Client can't run the TX ticker
[    5.540196] Client can't run the TX ticker
[    5.544748] Client can't run the TX ticker
[    5.549423] Client can't run the TX ticker

No reference to this error anywhere that Google can find on the internet.

What did I break?

Thanks,
--- Graham

==

[Graham Haddock]

Further information...

If I follow the dtb-rebuilder instructions for building a custom .dtb file, and

I just make and install "am335x-boneblack.dts" unchanged, that is, none of
my changes have been made or added to the example .dts file, I get the

same spewing forever "Client can't run the TX ticker" error message.

jessie actually boots and runs, user leds are blinking normally, I can

enter commands and get responses, but interrupted and separated

by all the continuously spewing error messages.

jessie snapshot 12-31
Linux BBB2 3.14.26-ti-r43 #1 SMP PREEMPT Tue Dec 23 20:10:13 UTC 2014 armv7l

I am running the 3.14-ti branch of the dtb-rebuilder.

Further information:

I found that I can SSH into the spewing system with PUTTY via Ethernet

and edit the uEnv.txt file and remove the reference to the newly compiled

.dtb file. When I reboot, the system is still spewing the error. Likely the error

is also inserted into the default .dtb file as a result of the way that

dtc rebuilds everything is sight as part of the build process.

Recovery help questions:

1.) What is the default .dtb file that the system uses to boot, if no .dtb file

is referenced in the uEnv.txt file?  I'll go get a clean copy of that.

2.) If I now boot from a uSD card, is it possible to mount the eMMC,

so that I can go in and edit files or replace files on the eMMC from the
OS running on the uSD card?  If so, what is the incantation?

Thanks,

--- Graham

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[Robert Nelson]

On Sun, Jan 18, 2015 at 9:44 PM, Graham Haddock <gra...@flexradio.com> wrote:
> Further information...
>
> If I follow the dtb-rebuilder instructions for building a custom .dtb file,
> and
> I just make and install "am335x-boneblack.dts" unchanged, that is, none of
> my changes have been made or added to the example .dts file, I get the
> same spewing forever "Client can't run the TX ticker" error message.
> jessie actually boots and runs, user leds are blinking normally, I can
> enter commands and get responses, but interrupted and separated
> by all the continuously spewing error messages.
>
> jessie snapshot 12-31
> Linux BBB2 3.14.26-ti-r43 #1 SMP PREEMPT Tue Dec 23 20:10:13 UTC 2014 armv7l
>
> I am running the 3.14-ti branch of the dtb-rebuilder.
>
> Further information:
> I found that I can SSH into the spewing system with PUTTY via Ethernet
> and edit the uEnv.txt file and remove the reference to the newly compiled
> .dtb file. When I reboot, the system is still spewing the error. Likely the
> error
> is also inserted into the default .dtb file as a result of the way that
> dtc rebuilds everything is sight as part of the build process.
>
>
> Recovery help questions:
>
> 1.) What is the default .dtb file that the system uses to boot, if no .dtb
> file
> is referenced in the uEnv.txt file? I'll go get a clean copy of that.

http://elinux.org/Beagleboard:Capes_3.8_to_3.14#Custom_dtb

>
> 2.) If I now boot from a uSD card, is it possible to mount the eMMC,
> so that I can go in and edit files or replace files on the eMMC from the
> OS running on the uSD card? If so, what is the incantation?

From u-boot, you can just stop u-boot and type:

ums 0 mmc 1

with the usb-otg cable connected, and the eMMC will show up on your desktop pc.

Regards,

--
Robert Nelson
http://www.rcn-ee.com/

[Graham Haddock]

Robert:

Thanks for the quick response.

1.) What is a "TX ticker", anyway?

2.) So I guess the basic question is what is different between

am335x-boneblack.dtb supplied with jessie 12-31

and the one that is built from am335x-boneblack.dts

by the dtb-rebuilder.

3.) Although your recommendation is easy, how 

would you mount the eMMC filesystem on an OS running

on a uSD card, so that you could directly get at the eMMC's

files?

Thanks,

--- Graham

Thanks,

--- Graham

[Robert Nelson]

On Sun, Jan 18, 2015 at 10:35 PM, Graham Haddock <gra...@flexradio.com> wrote:
> Robert:
> Thanks for the quick response.
>
> 1.) What is a "TX ticker", anyway?
>
>
> 2.) So I guess the basic question is what is different between
>
> am335x-boneblack.dtb supplied with jessie 12-31
>
> and the one that is built from am335x-boneblack.dts
>
> by the dtb-rebuilder

nothing...
.

>
> 3.) Although your recommendation is easy, how
>
> would you mount the eMMC filesystem on an OS running
>
> on a uSD card, so that you could directly get at the eMMC's
>
> files?

?

mkdir disk
sudo mount /dev/mmcblk1p1 disk

[Graham]

Switching from the repository

git clone https://github.com/khancyr/dtb-rebuilder.git

to Robert Nelson's repository

git clone https://github.com/RobertCNelson/dtb-rebuilder.git

solved the problem.  Apparently the instructions on the Wiki
referred to the khancyr repository which had some old code
with bugs.

Thanks to Robert for sorting all this out and fixing the 
Wiki instructions.

--- Graham

==