Thanks for your feedback.CPC.co.uk wrote:You may want to try using the HDMI_group = 1 (CEA) as this is prefered for analogue TV's as well as CRT monitors. By default if the particular resolution setting isn't supported it will revert to a default setting, most likely 640x480 in your case. Let us know how you get on
I use my Raspberry almost exclusively as a Media Center running RaspBMC. And that's what I'm using for testing as well.
Now I don't believe that CEA is a solution for me, but lets see what happens:
- setting it to HDMI_group = 1 only, and removing everything else - I get no picture at all
- adding hdmi_mode=1 works, but it's 640x480 @ 60 Hz. It flickers and has lots of aliasing and Moiré patterns
- hdmi_mode=4 works, but the picture is distorted, misplaced, flickers and has lots of aliasing and Moiré patterns. However it is reported as 1280x720p @60 Hz. Not usable though.
What I need is a properly working and recognized resolution better than VGA with a 70, 72 or 75 Hz refresh rate which does not exceed 64 kHz line frequency.
That would be hdmi_group=2 (DMT) and hdmi_mode 5, 6, 10, 11, 17, 18 and 21. I also tried 36, but I'm not sure if my screen would survive that for a longer operating time. I've tested them and they all work, sort-of (meaning I get a picture). But they are not recognized by the GUI. Which reports them as 640x480@60Hz. Which is wrong, because in contrast to the 60 Hz modes the screen doesn't flicker.