topic Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP in i.MX Processors

i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

PrithwirajShome — Wed, 29 Jun 2011 11:45:15 GMT

All,

I am new to QSB and Linux.

As per the user guide, i did flash the SD card with U-Boot.bin and uImage in the first 4 MB. Then created Ext3 partition for the root file system and uncompressed the root FS in that partition.

For U-Boot.bin:

sudo dd if=u-boot-mx53-loco.bin of=/dev/sde bs=512 && sync && sync

For Kernel Image:

sudo dd if=uImage of=/dev/sde bs=512 seek=2048 && sync && sync

For root FS:

1. sudo fdisk /dev/sde

u (to change from cylinder to sector)

2. sudo mkfs.ext3 /dev/sde1

3. sudo mount /dev/sde1 /home/mount1 (mount point)

4. cd /home/mount1

5. sudo tar --numeric-owner -xjvf /<path>/rootfs.tar.bz2

6. sudo umount /home/mount1

Boot Environment Variables are set as follows:

setenv bootfile 'dexter/uImage'

setenv filesize '2D47BC'

setenv fileaddr '70800000'

setenv bootcmd_mmc 'run bootargs_base bootargs_mmc; mmc read 0 ${loadaddr} 0x800 0x1800; bootm'

setenv lvds 'video=mxcdi0fb:RGB666,XGA ldb'

setenv bootcmd_obds 'ext2load mmc 0:1 0x70800000 /unit_tests/obds.bin; go 70800000'

setenv lcd 'video=mxcdi0fb:RGB24,SEIKO-WVGA'

setenv vga 'video=mxcdi1fb:GBR24,XGA di1_primary tve'

setenv hdmi 'video =mxcdi0fb:RGB24,1024x768M@60'

setenv bootcmd 'run bootcmd_mmc'

setenv bootargs_mmc 'set bootargs ${bootargs} root=/dev/mmcblk0p1 rw rootwait'

setenv bootargs_base 'setenv bootargs console=ttymxc0,115200 ${vga}'

The system comes up and i am able to login successfully with "lucid" as both login id and password BUT VGA output is not present.

The UART log is as attached below. PLEASE HELP.

Thanks!!

-Prithwi

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

JimDonelson — Wed, 29 Jun 2011 12:11:01 GMT

Did it work with image on the card as it came from the box, before you did any thing?

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

PrithwirajShome — Wed, 29 Jun 2011 12:47:11 GMT

hi jim, unfortunately its an used biard and I had to srart with a new sd card. Thanks!

Jim Donelson said:

Did it work with image on the card as it came from the box, before you did any thing?

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

Claude_Sylvain — Wed, 29 Jun 2011 13:34:43 GMT

Hello Prithwiraj,

- When configuring u-boot, you did not mention if you have saved
the environment variable, using "saveenv".
Is it possible that you forgot to save them ?

Claude

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

PrithwirajShome — Wed, 29 Jun 2011 13:47:17 GMT

Hey Claude,

Yep, i did that though i forgot to mention here.

Thanks!

-Prithwi

Claude Sylvain said:

Hello Prithwiraj,

- When configuring u-boot, you did not mention if you have saved
the environment variable, using "saveenv".
Is it possible that you forgot to save them ?

Claude

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

Claude_Sylvain — Wed, 29 Jun 2011 15:55:32 GMT

Hello Prithwiraj,

- Can you send us the output of the following command (done on
the i.MX53 QSB remote terminal):
ps -A

- P.S.: Are you sure your hardware setup is good? i.e.: VGA cable
and VGA monitor is working correctly.

Claude

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

PrithwirajShome — Thu, 30 Jun 2011 10:37:03 GMT

Hi Claude,

Thanks for your time!

PFA the log for command ps -A

Ya, the VGA cable and monitor are tested with other source. The QSB is not old enough and been used for few weeks so hoping that the VGA port is alright.

Thanks!

-Prithwi

Claude Sylvain said:

Hello Prithwiraj,

- Can you send us the output of the following command (done on
the i.MX53 QSB remote terminal):
ps -A

- P.S.: Are you sure your hardware setup is good? i.e.: VGA cable
and VGA monitor is working correctly.

Claude

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

Claude_Sylvain — Thu, 30 Jun 2011 16:00:59 GMT

Hello Prithwiraj,

>
> PFA the log for command ps -A
>

- Humm... I checked your "ps -A" log against the "ps -A" log
on my i.MX53 QSB; and it is pretty the same.
I attached the log in this post (ps_a_claude.log).

>
> Ya, the VGA cable and monitor are tested with other source. The QSB
> is not old enough and been used for few weeks so hoping that the VGA
> port is alright.
>

- Good.

- Maybe, we can found something revealing in the following file:
/var/log/Xorg.0.log

- Please, can you send us this file?

Claude

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

PrithwirajShome — Fri, 01 Jul 2011 04:27:50 GMT

Hi Claude,

Appreciate your patience. Please find attached the Xorg.0.log file.

I configured the Uboot for OBDS (On board diagnostic setup) and VGA test failed.

Thanks!

-Prithwi

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

Claude_Sylvain — Fri, 01 Jul 2011 06:05:08 GMT

>
> Appreciate your patience. Please find attached the Xorg.0.log file.
>

- Your Xorg.0.log and the one coming from my i.MX53 QSB is almost
the same.
So, no clue here :-(
See my attached Xorg.0.log (Xorg.0_claude.log).

>
> I configured the Uboot for OBDS (On board diagnostic setup)
> and VGA test failed.
>

- Interesting. I was not aware of that u-boot functionality.
I will try it later, and will provide you feedback.
Can you send us a log of what u-boot is displaying, when
doing its OBDS?

- Just a suggestion. Have you done a visual check on your i.MX53 QSB
board. Especially the VGA connector, that is not as robust
as a normal size VGA connector. Maybe some pins connection have
give up.

Claude

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

Claude_Sylvain — Fri, 01 Jul 2011 14:42:05 GMT

Hello Prithwiraj,

>
> I configured the Uboot for OBDS (On board diagnostic setup)
> and VGA test failed.
>

- Looking at U-Boot environment variables, I found the "bootcmd_obds"
variable. I run the commands found in that variable using the
following command:
run bootcmd_obds

The result of the VGA test was successful. i.e.: A Freescale
splash screen appeared on the monitor connected to the VGA
port of the i.MX53 QSB.

- It looks like you really have a hardware problem on your
i.MX53 QSB.
Maybe some investigation using an oscilloscope can bring up
the source of the problem.

Regards,

Claude

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

PrithwirajShome — Sun, 03 Jul 2011 14:40:32 GMT

Thanks Claude. I appreciate your help.

I will check the signal on the VGA and will update here.

Thanks!

Prithwi

Claude Sylvain said:

Hello Prithwiraj,

>
> I configured the Uboot for OBDS (On board diagnostic setup)
> and VGA test failed.
>

- Looking at U-Boot environment variables, I found the "bootcmd_obds"
variable. I run the commands found in that variable using the
following command:
run bootcmd_obds

The result of the VGA test was successful. i.e.: A Freescale
splash screen appeared on the monitor connected to the VGA
port of the i.MX53 QSB.

- It looks like you really have a hardware problem on your
i.MX53 QSB.
Maybe some investigation using an oscilloscope can bring up
the source of the problem.

Regards,

Claude

Re: i.MX53 QSB Boots up with Ubuntu Demo Image but there is no VGA output!--HELP HELP HELP

VincentChou1z — Thu, 03 May 2012 13:48:38 GMT

Hi!

Is there a procedure I could follow to use Ltib and 11.09 BSP to build a bootable SD card to have the same Ubuntu interface on VGA output? I have no idea how to get that type of Ubuntu interface on my VGA of QSB.

Vincent