Thursday, July 23, 2009

How to see more than the beagle?

As already mentioned before if you connect the HDMI to DVI, or some HDMI to HDMI cable (which is not included in the set) you see a Beagle on the TV/Monitor from u-boot (I guess), but as soon as Linux starts up and actually tries to bring up some X all the digital video output is gone.

What's the problem?

It turns out, that the board support package on the flash disc of my EBV beagle is not fully compatible with the kernel command line mentioned on the instructions page.

So I tried various settings with various TV's

stayed black (except for the beagle at the beginning)showed something (shifted to the left and up after the beagle)

The magic command lines which worked best (showed something shifted to the left) I composed from things off the web:

fatload mmc 0 80000000 uimage

setenv bootargs 'console=ttyS2,115200n8 console=tty0 root=/dev/mmcblk0p2
rw rootfstype=ext3 rootwait omap-dss.def_display=dvi omapfb.vram=2M,4M
omapfb.video_mode=1280x720MR-24@60 omapfb.debug=y'

bootm 80000000
Maybe the cable HDMI to DVI which comes with the kit should give us a hint, that the BB is not very compatible with TV's but might work better with monitors?

Let's try this.
showed the beagle and angstrom and ends up at log in screen (well only half the size of the screen, but at least something)

Again I followed the instructions:

Connect the USB hub using the mini USB A to B cable.
B side should be connected to the USB hub
Power up the USB hub
Connect the USB 2 Ethernet dongle the the USB hub
Connect keyboard and mouse to the USB hub

For entering Linux Angstrom

User name: ebvbeagle
Password: ebvbeagle

I rebooted and keyboard/mouse were found (we'll fix the ethernet later)
There was no such user, so I created one.

... logged in and stayed happily at the login screen...

How can I run xterm without some menu where I can choose it from?

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