965G, ADD2 HDMI, Toshiba TV: blank screen, X is operational

[Markus Strobl]

I had the same problem with my HTPC displaying on a 50" Samsung DLP. It had picture during boot, but went black as soon as X started.

On mine it turned out the EDID the TV supplied was not actually supported by the TV (!). Solution was to manually compose a mode line in xorg.conf and it has worked fine since.

I'd start by hooking up a computer monitor and see if you get a picture. If so, play with the mode line to find what the TV supports. My guess is that the TV reports a higher clock rate than it really is capable of displaying. Maybe try going to 720p and see if you get a picture and then take it up from there.

/Markus

----- Original Message ----
From: Nicolas Will <nico at youplala.net>
To: xorg <xorg at lists.freedesktop.org>
Sent: Friday, March 21, 2008 1:43:32 PM
Subject: Re: 965G, ADD2 HDMI, Toshiba TV: blank screen, X is operational


On Fri, 2008-03-21 at 17:24 +0800, kofboy wrote:
> Nicolas Will,
> 
> >Hi all,
> >
> >You may remember me from this summer and my initial trial at this
> using
> >the 2.1 version of the Intel driver
> >
> >After a few months using a binary blob, I have upgraded my OS to the
> >next version. This new release includes a new Xorg and a new Intel
> >driver.
> >
> >So I am trying to go back to my initial plan of using Open Source
> >supported hardware.
> >
> >A quick review of the systems:
> >
> >      * Intel DG95WH motherboard
> >      * Prolink ADD-7315-DVI-T sDVO/ADD2-N PCI Express x16 card with
> >        Composite, S-Video, Components and HDMI outputs - using HDMI
> >      * Ubuntu 8.04 "Hardy" 64-bit
> >      * Kernel 2.6.24 from Ubuntu
> >      * X.Org X Server 1.4.0.90 - Release Date: 5 September 2007 -
> Build
> >        Operating System: Linux Ubuntu (xorg-server
> >        2:1.4.1~git20080131-1ubuntu5)
> >      * Current Operating System: Linux favia 2.6.24-12-generic #1
> SMP
> >        Wed Mar 12 22:31:43 UTC 2008 x86_64 - Build Date: 13 March
> 2008
> >        05:48:21PM
> >      * 2.2.1 Intel driver
> >      * TV is 1080p capable (works with an nvidia card using the
> ninary
> >        blob)
> >      * The TV is connected using HDMI to the computer. Nothing else,
> >        like a VGA cable, is used
> >
> >The rest of the system is described here:
> >http://www.youplala.net/linux/home-theater-pc
> >
> >I have the following xorg.conf and associated log:
> >
> >http://www.youplala.net/~will/htpc/intel/
> >
> >I hope that the verbose logging is really useful and will not "help"
> by confusing things...
> >
> >
> >Symptoms: I have some text stuff displayed durung boot and shut-down,
> I have X and the applications started, but I have a black screen.
> >
> >
> >I am at a loss at the moment, and I a seeking eyeballs on the config
> and the logs, in the hope to be told than I am a moron and missed
> something.
> >
> >Thanks for your help,
> >
> >Nico
> >
> 
> 
> try this in your xorg.conf, and post Xorg.0.log.
> 
> 
> 
> Section "Device"
>     ...
>         Option          "monitor-TMDS-1"        "MonitorTMDS1"
>     Option      "IgnoreEDID"            "true"
> EndSection
> 
> Section "Monitor"
>         Identifier      "MonitorTMDS1"
>     ...
>         Modeline        "1920x1080 at 60hz"        148.352  1920 1960
> 2016 2200  1080 1082 1088 1125  +hsync +vsync
>         Option          "IgnoreEDID"        "true" 
>         Option          "PreferredMode"         "1920x1080 at 60hz"
> EndSection


Thanks for the time spent looking at this and replying.

I have done the modifications.

I have the same result, X is started, I can use the application using my
remote control, but no picture.

New conf and logs here:

http://www.youplala.net/~will/htpc/intel/test-1/

Ignore EDID sounds deprecated.

Nico

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