Comment 76 for bug 144322

(In reply to comment #51)

> I'm able to add modes and switch between interlaced/non-interlaced on the fly
> via xrandr.

I set my default mode to 800x600 non-interlaced and started X, then did

xrandr --newmode 720x576 13.88 720 741 814 888 576 580 587 625 +hsync +vsync interlace composite

xrandr --addmode VGA-0 720x576

It seems OK at this stage, xrandr lists the new mode, but when I do

xrandr --output VGA-0 --mode 720x576

it crashes my whole machine (the display does change to black), I'll see if I can get any sensible crashdump out of a serial console.