PiView Problems or How do I force a screen resolution?

[Nobody6]

Some time ago I got myself a PiView (or Pi-View) VGA adapter from Farnell/element14 so I could finally use my Raspberry and my PC at the same time.

The VGA adapter itself works just fine, especially when it is not connected to Pi. But whenever it is hooked up to the Pi, I can't get any usable display resolution out of it. No matter what I write in the config file seems to be ignored and I end up with with a too small 640x480 pixels screen with flickering 60 Hz causing me a headache (literally).

I'm at a loss here and would be grateful for any idea that might help.

I'm running RaspBMC and Raspbian both recently updated. If you need more info (e.g. exact version) please add how I can find that out.

P.S.:
Strictly speaking I don't alway get 640x480, I once had 576i (no idea how) and if I unplug the adapter during power up I get 1280x720 - but these are worse than 640x480

[Nobody6]

I should add what I have tried to far. My config file contains:

Code: Select all

# Force the monitor to HDMI mode so that no sound will be sent over HDMI cable
hdmi_drive=1
# Set monitor mode to DMT hdmi_group=2
hdmi_group=2
# Use HDMI mode even if no HDMI monitor is detected
hdmi_force_hotplug=1

and any one of the following (without the comment of course)

Code: Select all

#hdmi_mode=5    640x480   72Hz
#hdmi_mode=6    640x480   75Hz
#hdmi_mode=10   800x600   72Hz
#hdmi_mode=11   800x600   75Hz
#hdmi_mode=17   1024x768  70Hz
#hdmi_mode=18   1024x768  75Hz
#hdmi_mode=21   1152x864  75Hz
#hdmi_mode=35   1280x1024 60Hz
#hdmi_mode=36   1280x1024 75Hz

What am I doing wrong?
Why doesn't that work?
I should be able to force a specific resolution, especially when nothing is connected, shouldn't I? Or do I have to dig deeper in the system?

Anyone any idea? Please.

[Nobody6]

Problem solved - sort of.
I needed better EDID data. I had to find someone with a relatively new CRT monitor to get it following the descriptions over there:
http://www.raspberrypi.org/phpBB3/viewt ... 29&t=18585

In case someone has a similar problem, I'll attach the file I used.