[mythtv-users] problem getting X to display on TV using EDID

[Jakob Fix]

Hello,

I spent all night trying to figure out why I can't get X window to
display on my TV.

In a previous message to this list I read that one can use EDID
information that is read from the TV set to create a matching
Modeline.

I tried videogen, the xtiming.pl script and similar tools to generate
Modelines.  Usually, the TV displays "Not supported mode", but the
Xorg log doesn't shows any [EE] or [WW] messages.

Some background: I've bought a Samsung LCD TV (LE32R5) which has a
resolution of 1360x768 at 60Hz according to the manual, and it has HDMI
input.  My Mythbox is an Asus Pundit R350 with a ATI 9100 IGP with DVI
output.  I connected both with a DVI-HDMI cable and am able to see the
console, unfortunately with some horrible overscan, but anyway.  The
machine runs using Debian Sarge and Xorg 6.9.

The EDID output from the Xorg.0.log is (in part)

(II) RADEON(0): EDID data from the display on port 2-----------------------
(II) RADEON(0): Manufacturer: SAM  Model: 180  Serial#: 0
(II) RADEON(0): Year: 2006  Week: 12
(II) RADEON(0): EDID Version: 1.3
(II) RADEON(0): Digital Display Input
(II) RADEON(0): Max H-Image Size [cm]: horiz.: 89  vert.: 50
(II) RADEON(0): Gamma: 2.40
(II) RADEON(0): No DPMS capabilities specified; RGB/Color Display
(II) RADEON(0): First detailed timing is preferred mode
(II) RADEON(0): redX: 0.632 redY: 0.357   greenX: 0.289 greenY: 0.596
(II) RADEON(0): blueX: 0.143 blueY: 0.085   whiteX: 0.280 whiteY: 0.290
(II) RADEON(0): Supported VESA Video Modes:
(II) RADEON(0): 640x480 at 60Hz
(II) RADEON(0): Manufacturer's mask: 0
(II) RADEON(0): Supported additional Video Mode:
(II) RADEON(0): clock: 74.2 MHz   Image Size:  885 x 498 mm
(II) RADEON(0): h_active: 1280  h_sync: 1390  h_sync_end 1430
h_blank_end 1650 h_border: 0
(II) RADEON(0): v_active: 720  v_sync: 725  v_sync_end 730 v_blanking:
750 v_border: 0
(II) RADEON(0): Supported additional Video Mode:
(II) RADEON(0): clock: 74.2 MHz   Image Size:  885 x 498 mm
(II) RADEON(0): h_active: 1280  h_sync: 1720  h_sync_end 1760
h_blank_end 1980 h_border: 0
(II) RADEON(0): v_active: 720  v_sync: 725  v_sync_end 730 v_blanking:
750 v_border: 0
(II) RADEON(0): Ranges: V min: 50  V max: 61 Hz, H min: 15  H max: 46
kHz, PixClock max 80 MHz

[...]

How can I make a Modeline of this information?

-- 
cheers,
Jakob.