[mythtv-users] DVI-HDMI, Screen resolution

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Fri Jan 19 03:24:00 UTC 2007

You might want try creating a custom modeline in your xorg.conf file.

Here is an example:

Section "Monitor"
    ModeLine    "1224x688-60p" 74.16 1224 1360 1400 1648 688 709 714 750
    ModeLine    "1224x688-59.94p" 74.086 1224 1360 1400 1648 688 709 714 750

And using it in

Section "Screen"
    Modes     "1920x1080_120i" "1920x1080_120i_0" "1280x720_60"
"1280x720_60_0" "1224x688-60p"  "1224x688-59.94p" "720x480_60" "640x480_60"

This particular mode the monitor thinks the 1224x688 modelines above are
1280x720p modes. However, now all pixels are displayed and there is no
overscan such as you are seeing.  The monitor I am using is a ProView rx326.
I don't claim this modeline is perfect, but it does the job.

WARNING: I use this modeline for computer used (KDE) and the myth interface,
however I have been forced to use a native 720p or 1080i modes with their
inherent overscan for video playback in myth due to audio stuttering if I
try to output HDTV to this particular modeline. (I use different resolutions
for different playback resolutions and interface.)

Using the nvidia drivers, I have to enable a variety of options to get it to
work.  I am using two screens and here is the Device section for the
relevant one.

Section "Device"
	Option "UseDisplayDevice" "DFP" 

	BusID       "PCI:1:0:0"
	Identifier     "Card0"
	Driver         "nvidia"
	Option	"NvAGP"  "3"

	Option          "ExactModeTimingsDVI"
	Option		"NoLogo" "true"
	Option "RenderAccel" "false"
	Option "DynamicTwinView" "false"	# Needed to allow proper
reporting of refresh rate

	#Option "UseEdidFreqs" "false"
	#Option "IgnoreEDID" "true"
	Option  "ModeValidation"
	Option "DPI" "100 x 100"
	Option "XvmcUsesTextures" "false"
	Screen 0

-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Phill Edwards
Sent: Thursday, January 18, 2007 9:20 PM
To: Discussion about mythtv
Subject: Re: [mythtv-users] DVI-HDMI, Screen resolution

> I'm loosing about 20pixels a side. Is it possible to tell xorg to shrink
> the desktop, and leave the borders blank?

Don't know about that, but somewhere in MythTV setup you can tell it
what size screen to display so you may be able to deal with it that

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