ubuntu 10.10 dvi problem

[Matthew]

hey i recently installed ubuntu 10.10 on my beaglebored xm rev B
everything went fine in till the power connector got knocked and the
bored lost power. when it rebooted to screen stopped outputting
anything at all. i tried to do some of my own debugging by looking at
the serial data but it goes dead as soon as the kernel loads.

thanks in advance

[Robert Nelson]

If you edit/regenerate your boot.scr file with
"console=ttyS2,115200n8" or "console=ttyO2,115200n8" (O for 2.6.36 and
greater) in the bootarg you'll be able to debug more..

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

[James Pendergrast]

Greetings.

> everything went fine in till the power connector got knocked and the
> bored lost power. when it rebooted to screen stopped outputting
> anything at all.

I am having a problem similar to Matthew's, I think I may have run
into the same issue.
I am using Ubuntu Maverick, installed on an 8G SD card by these
instructions: https://wiki.ubuntu.com/ARM/OMAPMaverickInstall.
On the first boot, the DVI output works. After rebooting several
times, the DVI output still works. After removing and replacing the
power, the DVI output fails to work.

> If you edit/regenerate your boot.scr file with
> "console=ttyS2,115200n8" or "console=ttyO2,115200n8" (O for 2.6.36 and
> greater) in the bootarg you'll be able to debug more..

I have modified boot.scr, adding the options
earlyprintk console=ttyS2,115200n8 serialtty=ttyS2

The DVI display does not recognize any signal from the beagle board.
The serial output is copied below, then nothing.
Any suggestions as to how to convince Ubuntu to continue sending DVI
output would be greatly appreciated.

James

===========================

Texas Instruments X-Loader 1.4.4ss (Sep 30 2010 - 14:44:32)
Beagle xM Rev A
Reading boot sector
Loading u-boot.bin from mmc


U-Boot 2010.09-rc1 (Sep 23 2010 - 11:20:00)

OMAP3630/3730-GP ES2.0, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
OMAP3 Beagle board + LPDDR/NAND
I2C: ready
DRAM: 512 MiB
NAND: 256 MiB
*** Warning - bad CRC or NAND, using default environment

In: serial
Out: serial
Err: serial
Beagle xM Rev A
Die ID #001600211ff00000015739eb0c021025
Hit any key to stop autoboot: 0
mmc1 is available
reading boot.scr

378 bytes read
Running bootscript from mmc ...
## Executing script at 82000000
reading uImage

3687812 bytes read
reading uInitrd

9504063 bytes read
## Booting kernel from Legacy Image at 80000000 ...
Image Name: Ubuntu Kernel
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3687748 Bytes = 3.5 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
## Loading init Ramdisk from Legacy Image at 81600000 ...
Image Name: Ubuntu Initrd
Image Type: ARM Linux RAMDisk Image (uncompressed)
Data Size: 9503999 Bytes = 9.1 MiB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 2.6.35-22-omap (buildd@gourd) (gcc
version 4.4.5 (U
buntu/Linaro 4.4.4-14ubuntu4) ) #33-Ubuntu Mon Sep 20 03:17:30 UTC
2010 (Ubuntu
2.6.35-22.33-omap 2.6.35.4)
[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7),
cr=10c53c7f
[ 0.000000] CPU: VIPT nonaliasing data cache, VIPT nonaliasing
instruction ca
che
[ 0.000000] Machine: OMAP3 Beagle Board
[ 0.000000] bootconsole [earlycon0] enabled
fsck from util-linux-ng 2.17.2
/dev/mmcblk0p2: clean, 117107/909072 files, 563933/1921775 blocks
* Starting AppArmor profiles
Skipping profile in /etc/apparmor.d/disable: usr.bin.firefox

[ OK ]
* Setting sensors
limits [ OK ]
fsck from util-linux-ng 2.17.2
/dev/mmcblk0p2: clean, 117107/909072 files, 563933/1921775 blocks
* Starting AppArmor profiles
Skipping profile in /etc/apparmor.d/disable: usr.bin.firefox

[ OK ]
* Setting sensors
limits [ OK ]
speech-dispatcher disabled; edit /etc/default/speech-dispatcher
* PulseAudio configured for per-user sessions
saned disabled; edit /etc/default/saned
* Enabling additional executable binary formats binfmt-
support [ OK ]

=========================================