low resolution using dvi output

[Paolo Pisati]

Hardware setup:

-Panda ES rev B1
-dvi output on the panda board (the one close to the edge)
-hdmi->dvi cable converter
-dvi input on a BenQ FP202W lcd

Software:

flag@flag-desktop:~$ uname -a
Linux flag-desktop 3.5.0-213-omap4 #20-Ubuntu SMP PREEMPT Tue Oct 9 22:53:36 UTC 2012 armv7l armv7l armv7l GNU/Linux

flag@flag-desktop:~$ cat /proc/cmdline
ro console=tty0 console=ttyO2,115200n8 debug earlyprintk=ttyO2,115200n8 drm.debug=7 omapdss.debug=1 root=UUID=2cd20605-52e0-43a5-a948-08ad42dde62f

flag@flag-desktop:~$ dpkg -l | grep omap
ii libdrm-omap1:armhf 2.4.39-0ubuntu1 armhf Userspace interface to omap-specific kernel DRM services -- runtime
ii linux-headers-3.5.0-13-omap 3.5.0-13.14 armhf Linux kernel headers for version 3.5.0 on TI OMAP3-based ARM (hard float) systems
ii linux-headers-3.5.0-209-omap4 3.5.0-209.15 armhf Linux kernel headers for version 3.5.0 on TI OMAP4-based systems
ii linux-headers-3.5.0-213-omap4 3.5.0-213.20 armhf Linux kernel headers for version 3.5.0 on TI OMAP4-based systems
ii linux-headers-omap4 3.5.0.213.12 armhf Linux kernel headers for the OMAP4 architecture.
ii linux-image-3.5.0-209-omap4 3.5.0-209.15 armhf Linux kernel image for version 3.5.0 on TI OMAP4-based systems
ii linux-image-3.5.0-213-omap4 3.5.0-213.20 armhf Linux kernel image for version 3.5.0 on TI OMAP4-based systems
ii linux-image-omap4 3.5.0.213.12 armhf Linux kernel image for the OMAP4 architecture.
ii linux-omap4 3.5.0.213.12 armhf Complete Linux kernel for the OMAP4 architecture.
ii pvr-omap4 1.9.0.5.1.1-0ubuntu4 armhf PowerVR SGX540 libraries for OMAP4, libs and drivers.
ii u-boot-linaro-omap4-panda 2012.08.2-ubuntu1 armhf U-Boot bootloader binary for the TI OMAP4 Panda board
ii xserver-xorg-video-omap 0.4.0-0ubuntu2 armhf X.Org X server -- OMAP display driver

the two dmesg attached show two runs: in the first case the board was directly connect to the lcd, in the second case the signal was run through a dvi->vga converter.

In both cases i got a 640x480 desktop, and the only difference was that with the converter in between, the image was shifted on the left.