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[hugovdm@mail.com: Re: XF86Setup: how are the Modelines generated?]



I forwarded the initial question to debian-user, I might as well send this
as well.

----- Forwarded message from Hugo van der Merwe <hugovdm@mail.com> -----

From: Hugo van der Merwe <hugovdm@mail.com>
To: branden@debian.org
Subject: Re: XF86Setup: how are the Modelines generated?
Date: Thu, 14 Sep 2000 17:07:48 +0200
Delivered-To: branden@localhost.deadbeast.net
Delivered-To: branden@deadbeast.net
In-reply-to: <20000914123748.A6731@gorilla.wilgenhof.sun.ac.za>; from hugo on
 Thu, Sep 14, 2000 at 12:37:48PM +0200
Message-id: <20000914170748.A8155@gorilla.wilgenhof.sun.ac.za>
User-Agent: Mutt/1.2.5i

On Thu, Sep 14, 2000 at 12:37:48PM +0200, hugo wrote:
> XF86Setup generates invalid modelines on my machine. They all (all
> resolutions up to 1024x768) have dotclocks of 65.15, which is only valid
> for 1024x768. The "test" performed just before saving the config file,
> works perfectly - why does the config file not match this test?

To sort-of answer my own question: I think this is related to the fact
that I have a laptop, and the way an LCD screen works. I'm trying to
find out more about it now. (It would help to know how XF86Setup gets
its modelines - I think xvidtune does the same, it also gets invalid
mode lines...)

Maybe laptops do not use hsync or vsync at all - and the lct always
expects 65.15 dotclock, and the card always gives this - the only
problem is that the modes "appear" invalid because of hsync or vsync
settings? I am speculating, and have too little knowledge on the matter
to know whether I am uttering rubbish.

I'll continue my quest for better laptop support on the debian-laptop
mailing list. Thanks,
Hugo van der Merwe

----- End forwarded message -----

-- 
G. Branden Robinson            |     I am sorry, but what you have mistaken
Debian GNU/Linux               |     for malicious intent is nothing more
branden@deadbeast.net          |     than sheer incompetence!
http://deadbeast.net/~branden/ |     -- J. L. Rizzo II

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