Attempting fix Xorg horiz and vert sync limits

Forum discussion on this topic starts here:

https://forum.puppylinux.com/viewtopic.php?p=53773#p53773

Reading the posts, you will get to a fix. Pemasu commented out the "HorizSync    35-81" in /etc/X11/xorg.conf and X started OK.

Those horiz and vert limits were put in way back when we had cathode-ray-tube monitors. It constrained Xorg so it didn't try to run the monitor with some insane horiz and vert rates.

My /etc/X11/xorg.conf has this "Monitor" section:

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
	HorizSync    35-81
	VertRefresh  59-76
	#UseModes     "Modes0" #monitor0usemodes
	Option      "PreferredMode" "1920x1080" #monitor0prefmode
EndSection

Not sure if should just remove those two constraints, in case it causes a problem on old hardware.

As Feodor posted in a email, a monitor may work at 90Hz, so that 59-76 range is too low. However, the monitor will probably still work at 60Hz.

Well, pemasu had success with commenting out the "HorizSync" line, so maybe I will do that as default, and we shall see what happens. I could try increasing the range, say "HorizSync 35-135", nah, will give it a go that line commented-out.  

Tags: easy