[Openchrome-users] VIA CX700M HDMI 720P Output Fail

[Craig Robson]

Xavier wrote:

On Thu, Apr 30, 2009 at 3:00 AM,
<openchrome-users-request at openchrome.org> wrote:
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> Today's Topics:
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> ? 1. VIA CX700M HDMI 720P Output Fail (Dan Kingdon)
> ? 2. Re: VIA CX700M HDMI 720P Output Fail (Xavier Bachelot)
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> ----------------------------------------------------------------------
>

>
> Dan Kingdon wrote:
>> Hi,
>> Running a brand new Jetway J7F5M-VHE motherboard with HDMI output,
>> Ubuntu 9.04 Desktop, bundled openchrome drivers.
>> Ultimate goal is to get full 1280x720 via 720P HDMI to a plasma TV.
>> At present its not having any of it and I am strugling to find any info
>> on anyone who has.
>> With mother board set at "CRT+HDMI" and default xorg.conf I get a
>> perfect picture on the CRT and a picture on the HDMI which is clearly
>> not in a proper mode, no matter what the resolution. Colour appears to
>> match the desktop but is flickering and out of sync.
>>
>> With the mother board set at "HDMI" we get the same garbled mode on the TV.
>> Switching to openchrome drivers, we can get a picture on the HDMI cable
>> but it is running at a fixed res and any resolution set in xorg.conf
>> merely underscans and is cropped.
>>
>> Adding any of these options does not seem to effect things.
>> Option "TVOutput" "720P"
>> Option "TVType" "Composite" or Option "TVType" "SC" or Option "TVType"
>> "HDMI"
>> Adding Option "ActiveDisplay" "TV" casues X to fail to load and sticks
>> at flashing cursor.
>> Adding Option "VBEModes" Also causes X to hang at flashing cursor.
>> 1. Does anyone have HDMI output working on this chipset? If so do they
>> have a working xorg.conf file that I can check out.
>>
>> 2. Has anybody had better luck on other linux distro's? Fedora seems to
>> be the manufacturers favourite.
>> 3. Any help very much appreciated. (if all else fails then we shall have
>> to use windows :( )
>> Thanks for reading.
>> *Daniel Kingdon*
>> IT Technician
>> Hanham High School
>>
> you need svn trunk for native DVI support.
> You don't want to use Option "VBEModes". You want to use Option
> "ActiveDevice" "DFP". You may need to provide a modeline and
> VertRefresh/HorizSync for your TV. The BIOS setup shouldn't matter,
> except at boot time when the openchrome driver has not taken control.
>
> I, as the Fedora package maintainer, try to keep the packages fairly
> current. F-10 is almost at trunk level and have support for the CX700
> TMDS encoder. Anyway, you can probably get Ubuntu to work, but you'll
> need to build the driver from trunk on your own.
>
> Regards,
> Xavier
>
>

I've also been trying to make this motherboard work with an HDMI TV
and am having similar problems.  Has anybody gotten this to work?  How
can I debug this?

Thanks,
Craig