[ltp] DVI throughput with port replicators/docking stations

[Satish Balay]

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I would think the DVI resolution that thinkpads can drive primarily
depend on the graphics card - and not the port replicatior (although
there could be some electrical charecteristics of the port-replicator
than can prevent this resolution)

And most video cards have a different resolution specification for DVI
- and non DVI outputs - and most folks (including IBM) list only
non-DVI resolution in the specs.

<speculation>
Since the newer T42p models come with a 15in 1600x1200 LCD - I would
guess the graphics cards in them can drive external LCD displays also
at the same resolution.
<end>

Satish

On Tue, 8 Jun 2004, Aaron Mulder wrote:

> 	It's been a while since I tried this, so I hooked it up again
> today.  I'm using SuSE 9.1 and the radeon driver included in XFree86, and
> I'm not getting any of the pixel problems.  Perhaps then it is a driver
> issue (I'm sure when I last tried I was using Red Hat 9 or so).  This is
> on a T40p -- The T30 still has Red Hat 9 on it and still has the problem,
> so it's not strictly OS-related.
>
> 	I also tried booting to Windows, using a pretty recent ATI driver
> from IBM.  It showed the max resolution of the panel as 1600x1200, but
> wouldn't drive it higher than 1280x1024.  If I fussed I could get it to
> let me set the resolution to 1600x1200, but then it panned.  I haven't
> tried a driver directly from ATI to see whether it works at all at
> 1600x1200.
>
> Aaron
>
> On Tue, 8 Jun 2004, Andr? Wyrwa wrote:
>>> The limitation of 1280x1024 is purely a IBM ATI Windows driver problem.
>>> The "IBM" ATI windows driver is multiple revisions out of date from the
>>> latest official ATI driver.
>>
>> This suggests that the problem doesn't exist in Linux at all (as opposed
>> to what Aaron wrote)? What about the green/red pixels?
>>
>>> If you are stuck with Windows, the solution is to download the latest
>>> ATI Catalyst drivers, and then use this tool:
>>>
>>> http://www.driverheaven.net/patje/
>>
>> This looks good, for actually i am stuck with win.
>> Do these catalyst drivers also solve the green/red pixel problem?
>>
>> Thx,
>> André.
>>
>>
>> --
>> The linux-thinkpad mailing list home page is at:
>> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
>>
> --
> The linux-thinkpad mailing list home page is at:
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
>
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