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Re: HD TV as Monitor

Le vendredi 13 mars 2009 à 16:04 -0400, Dale Scheetz a écrit :
> I have a Samsung 42" HD TV.

> Does anyone have any idea what the mode line should look like for these devices?

There are a few issues with getting such devices work with X, but it is

1. You probably need a DVI→HDMI adapter in all cases, since these
devices refuse to display 1080p with a VGA cable (you know, security,
DRM, blahblah, LOL).

2. I guess it depends on the TV, but mine requests 1080i through EDID
and X doesn’t really understands what this means. It generates a
1920×540 modeline in this case, and of course this doesn’t work.

3. X-generated modelines are meant for CRT or LCD monitors, not for TVs
which need much lower synchronization times.

4. X prefers using its own modelines even if you specify others by hand,
so you have to specify another mode name.

The result is the following configuration:

Section "Device"
        Identifier      "ATI Radeon trucmuche"
        Driver          "ati"
        Option          "IgnoreEDID"    "true"
        Option          "Monitor-DVI-0" "Configured Monitor"

Section "Monitor"
        Identifier      "Configured Monitor"
        Modeline "1920x1080_p"  143.64 1920 1944 2040 2128 1080 1082 1085 1125
        Option          "PreferredMode" "1920x1080_p"

Section "Screen"
        Identifier      "Default Screen"
        Monitor         "Configured Monitor"
        Device          "ATI Radeon trucmuche"
        DefaultDepth    24
        Subsection "Display"
                Virtual 1920 1080
                Depth   24
                Modes   "1920x1080_p"

 .''`.      Debian 5.0 "Lenny" has been released!
: :' :
`. `'   Last night, Darth Vader came down from planet Vulcan and told
  `-    me that if you don't install Lenny, he'd melt your brain.

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