problem starting any kernel (Ubuntu or Angstrom)

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1

Hi,
      I have problems starting the kernel of ubuntu or angstrom after
trying to install the android distribution. This last changed the x-
loader and u-boot on my BB. I have installed again the last versions
of the x-loader and u-boot (taking the remark that the x-loader
1.4.4ss works only with the last u-boot).

The system runs the loader and u-boot without a problem, it accepts
the reset command; something that after changing the distribution made
that the system only started pressing the user button. It works now
fine. I have my MMC card with ubuntu 9.10 and other with Angstrom but
none of them work. They stuck without been able to start, and start a
cycle of connection and disconnection of the usb hub while is trying
to start the OS.

The USB hub doesn't have power supply, the beagleboard power suply is
the OTG USB connection.

These two SD card worked fine, but now none of them are able to start
the OS.

What can I do? Is it a problem on the BB ? This has already the new x-
loader and the u-boot.

Regards,
Hugo Uchida F.

2

Where exactly does it stop in ubuntu 9.10, I'm debugging an issue
today with some of the same circumstances...

Regards,

3

Hi Robert,

Thank you for your quick answer. It stucks after starting the kernel when it start the detection of the USB Hub. I also start a fresh card using the steps of the ubuntu page:

BeagleBoardUbuntu - eLinux.org

Now using the lucid version, using the script:


<br>./setup_sdcard.sh --mmc /dev/sdb --ignore_md5sum<br><br>but it stucks with the difference that now the kernel abort the starting up when it doesn't find the <br>/dev/mmcblk0p2 and gives the prompt (initrms) starting the cycle of connect and disconnect the USB hub. <br><br>I am powering the BB with the OTG USB, the usb hub doesn't have power supply; there a keyboard, a mouse and a USB to ethernet adaptor connected to this hub. With the previous installing of ubuntu 9.10 and angstrom there was not problem to have these connected.<br><br>It stuck just when the<br> kernel start the recognition of the peripheral.<br><br>Regards,<br>Hugo Uchida F. <br><br>


— El mié 14-abr-10, Robert Nelson robertcnelson@gmail.com escribió:


> De:: Robert Nelson robertcnelson@gmail.com
> Asunto: Re: [beagleboard] problem starting any kernel (Ubuntu or Angstrom)
> A: beagleboard@googlegroups.com
> Fecha: miércoles, 14 de abril de 2010, 19:38
>
> On Wed, Apr 14, 2010 at 12:31 PM, kaminari uchida_77@yahoo.com wrote:
> > Hi,
> > I have problems starting the kernel of ubuntu or angstrom after
> > trying to install the android distribution. This last changed the x-
> > loader and u-boot on my BB. I have installed again the last versions
> > of the x-loader and u-boot (taking the remark that the x-loader
> > 1.4.4ss works only with the last u-boot).
> >
> > The system runs the loader and u-boot without a problem, it accepts
> > the reset command; something that after changing the distribution made
> > that the system only started pressing the user button. It works now
> > fine. I have my MMC card with ubuntu 9.10 and other with Angstrom but
> > none of them work. They stuck without been able to start, and start a
> > cycle of connection and disconnection of the usb hub while is trying
> > to start the OS.
>
> Where exactly does it stop in ubuntu 9.10, I’m debugging an issue
> today with some of the same circumstances…
>
> Regards,
>
> –
> Robert Nelson
> http://www.rcn-ee.com/
>
> –
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|

4

Hello Hugo,

Hi Robert,

Thank you for your quick answer. It stucks after starting the kernel when it start the detection of the USB Hub. I also start a fresh card using the steps of the ubuntu page:

BeagleBoardUbuntu - eLinux.org

Now using the lucid version, using the script:

./setup_sdcard.sh --mmc /dev/sdb --ignore_md5sum

BTW, i'm adding some localization patches to the setup_sd script right
now, do you need anything special for:

sudo fdisk -l | grep "Disk /dev/"

Disk /dev/sda: 80.0 GB, 80000000000 bytes

but it stucks with the difference that now the kernel abort the starting up when it doesn't find the
/dev/mmcblk0p2 and gives the prompt (initrms) starting the cycle of connect and disconnect the USB hub.

That's strange, I'm testing a new beta-2.1 image that I'm planning to
upload tonight and it's finding /dev/mmcblk0p2 in that situation...
(Bx powered thru OTG, booting off MMC card) It's also using the
2.6.32.11-l13 kernel...

I am powering the BB with the OTG USB, the usb hub doesn't have power supply; there a keyboard, a mouse and a USB to ethernet adaptor connected to this hub. With the previous installing of ubuntu 9.10 and angstrom there was not problem to have these connected.

I'm actually surprised that worked before, the 100mA's from the ehci
port is barely enough for one peripheral...

Regards,

5

I am powering the BB with the OTG USB, the usb hub doesn't have power supply; there a keyboard, a mouse and a USB to ethernet adaptor connected to this hub. With the previous installing of ubuntu 9.10 and angstrom there was not problem to have these connected.

I'm actually surprised that worked before, the 100mA's from the ehci
port is barely enough for one peripheral...

I thought about this a little more. With Lucid, we are loading all
the modules into an initramfs, so on kernel start all the modules/etc
are already loaded into ram. Thus it is finding and loading all the
needed modules for the usb devices alot faster then before. Which is
probably causing a much larger initial current draw on the ehci port
then previously..

Regards,