Jaunty - can I disable xinerama?

[Willy Hamra]

2009/5/13 Mark Greenwood <fatgerman at ntlworld.com>:
> On Wednesday 13 May 2009 09:41:20 marc wrote:
>> Mark Greenwood said:
>>
>> > I will probably raise this as a bug, but X confuses the living goo out
>> > of me so I'd like to probe the collective wisdom here first..
>> >
>> > On my Asus eee box, X has inexplicably decided I have 2 displays
>> > attached, despite there only being one connector for a monitor, and that
>> > being connected to my flatscreen TV's VGA port. Very odd. Anyway it
>> > seems that because it thinks I have 2 screens it has also enabled the
>> > horror that is Xinerama and this is causing mythtv no small amount of
>> > confusion.
>>
>> Yup, it seem that if you have multiple video cards and/or multiple
>> monitors X gets very confused. I'm having problems myself, and it's
>> looking like X is the culprit.
>
> That's the thing - I *don't* have multiple video cards, or multiple monitors. And yet X thinks I do. It actually appears to be running 2 displays on the same video card and using the same monitor!
>
>>
>> > Now that we have this new improved X which ignores xorg.conf, how can I
>> > disable xinerama? Or how can I inform it politely that I only have one
>> > screen?
>>
>> I don't believe that X ignores xorg.conf. If you make changes to
>> xorg.conf, restart X, then examine the logs, you should see you're
>> additions being actioned.
>
> It does ignore some things. You can still use some options, but other are completely ignored (ModeLine, for instance, appears not to do anything any more - which is annoying because that's how I got my 50Hz to work last time). Of course, this being X11, there is no (intelligible) documentation that I can find. Ho Hum.
>

uhm, this doesn't happen to me. screen resolutions and refresh rates
that *I* specify in my xorg.conf are what appear available as valid
settings. my computer gets attached to some weird monitors at times,
and i can't afford having it run on the same high refresh rates i use
at home, so i have many defined, and no refresh rate above 60 Hz
available for resolutions higher than 1152, and all is respected by X.


-- 
Willy K. Hamra
Manager of Hamra Information Systems
Co. Manager of Zeina Computers and Billy Net.