Rounds and Ovals.Graphics issues

tommylight wrote: I did try xrandr and other tricks, even editing xorg manually but no joy.

You probably can force a 4:3 mode in xorg.conf, but I suspect it would be a project.

Google will turn up dozens of ways to do it. One of them might work.

I eventually found a recipe that gave me the the right resolution on my monitor. I have no confidence that the same thing would work on anything else, but xorg.conf does seem to be the Nuclear Option when all else fails.

Yup, exactly as Tom mentioned. And it has me thinking of trying MINT or Jessie. To compound the problem xorg.conf does not exist in the x11 folder and has to be created, and has one running in circles . I shall try a little more...

Andy, thank you very much for your tips, but as i mentioned, it is a sync problem. It is an older silicone graphic TFT display, (like really old) but it still has a beautiful colour rendering so i keep using it in my workshop for my local server and playing music every day.
I think i mentioned somewhere on this forum that i am an electronic and computer expert with over 30 years of experience, so i checked and i am certain it is a sync problem with that monitor. I have set up, and still do, a lot of weird things (like a 6 monitor setup 17 years ago for playing quake, a home automation with a ZX Spectrum over 20 something years ago, a robot arm controlled by that same ZX, etc etc). Damn i miss that time.

To keyboard, when you did xrandr, did you get a valid resolution for your actual monitor in the results? If you did, you will have to run some circles with xorg and you will get it working properly, but if xrandr does not mention your actual native monitor resolution, try mint and if that does not work, there is something wonky with you graphic card.
Regards,
Tom

Hi Tommy,
The current setup does not have a graphics card.Its a ASROck Q1900B-ITX. Hence, am using the onboard graphics (intel) to HDMI and tried it on two different newer monitors. When I run Xandr its returning a "Failed to get size of gamma for output default" error.
Its unable to detect EDID monitor resolution. Hence refresh rate is always 0.0. I may try a separate graphics card. Was saving the slot for a MESA card.(only one slot).

You refreshed my memories on the ZX Spectrum.In fact I think I still have it kicking around at my parents. Thats more than 30 years. Boy, am i getting old.

Thanks for the clues will plug on.

I have an Asrock Q1900M-Pro3 plugged into an old cheezy VGA LCD flat panel (only 1024x760) and it has no problems getting the circles round using the live CD Wheezy Linuxcnc install. I have not tried it with a wide format screen. I could try one on Monday, but I fully expect it to work fine.

tommylight wrote: home automation with a ZX Spectrum over 20 something years ago, a robot arm controlled by that same ZX, etc etc). Damn i miss that time.

So do I: www.worldofspectrum.org/infoseekpub.cgi?regexp=^Andy+Pugh$

To keyboard, when you did xrandr, did you get a valid resolution for your actual monitor in the results?

I didn't. Which is why I made an xorg.conf and forced it to use that.
I think a refresh rate of 0 is correct for a digital flat panel.