intel atom D525MW w/i915 onboard gfx vs 16x9 monitor

Gene Heskett gheskett at
Fri Jul 17 22:51:41 PDT 2015

On Saturday 18 July 2015 01:20:35 Felix Miata wrote:
> Gene Heskett composed on 2015-07-18 00:06 (UTC-0400):
> > Does anyone know how to get a square pixel on this gfx set?
> >
> > It works well on a 4x3 monitor, but circles are squashed on a 16x9.
> What, if any, video parameters do you have on your kernel cmdline? One
> can act as a signal to prevent automagic X configuration from working
> with the Xorg Intel driver, which wants to use it instead of EDID
> preferred unless you use some kind of X config to override it, either
> the traditional route of xrandr commands on startup or
> /etc/X11/xorg.conf*, or xrandr commands hidden in the DE's desktop
> settings for the display, if applicable. As I always go the
> traditional route, I've no expectations whether Trinity's Control
> Center Display Size & Orientation work as expected, but I should think
> they would, same as counterparts in KDE or other DEs.

This isn't TCC, but the XFCE used for a linuxcnc install on those 
machines.  Its debian wheezy, 7.8, with a real time patched kernel.

TCC has no such choices here on this machine, but since it works 
reasonably well on this dell 16x9 23"er, I haven't looked that hard 

I have looked at xrandr, but see no controls that would effect that.

> TCC does work 
> here on a P4D/G33 installation on a 16:10 display to switch between
> 1600x1200 and 1440x900. AFAIK, Intel on the Atom in this regard acts
> no differently than it does on any other x86.

The default seems to be 1280x768.  There is a 13nnx800 mode but the 
images are bigger than the screen and circles are still smunched 
vertically. 17" AOC monitor on the machine doing the squashing.

Thanks Felix.

Cheers, Gene Heskett
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