Jaunty - can I disable xinerama?

[Nigel Ridley]

Willy K. Hamra wrote:
> On Wednesday 13 May 2009 18:59:56 Mark Greenwood wrote:
>> On Wednesday 13 May 2009 11:48:35 Willy Hamra wrote:
>>> 2009/5/13 marc <gmane at auxbuss.com>:
>>>> 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.
>>>>
>>>>> 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.
>>>>
>>>> There does seem to be quite a bit of confusion, though, about what's
>>>> going on.
>>> yup, i've had enough of all this confusion about the bullet proof X. X
>>> still DOES read xorg.conf, and still DOES apply all the graphical
>>> gibberish we throw in it. i have written my xorg.conf for every
>>> release of kubuntu from the days of gutsy, and always will.
>>> the new bullet proof X is just that it can run, autoconfigure itself,
>>> and work properly even if there is no xorg.conf at all, that's the
>>> whole story. once settings exist, autoconfiguration stops, and it
>>> reads the file. as for xinerama, i'm sorry, but i never used it, or
>>> have any idea what properties/options it has that can be put in
>>> xorg.conf to control it.
>> Pasted from my xorg.conf:
>>
>> # Note that some configuration settings that could be done previously
>> # in this file, now are automatically configured by the server and settings
>> # here are ignored.
>>
>> Is this wrong?
>>
>> I've already tried several valid modeline settings (generated using gtf) to
>> try to change the vsync settings, but X ignores them all. The same
>> settings, on the same hardware, with an older version of X (and a different
>> distro) work exactly as expected. Wierd.
>>
> 
> these are referring to input related settings in xorg.conf.
> all input like keyboard and mouse settings are managed elsewhere now. but 
> video is all in xorg.conf still/
> 
> 

Not quite true as my xorg.conf contains settings for my touchpad (Dell Inspiron 1525):

Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"	"true"
	Option		"Device"		"/dev/psaux"
	Option		"Protocol"		"auto-dev"
	Option		"HorizEdgeScroll"	"0"
	Option		"MaxTapTime"		"2"
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
	Screen		"Default Screen"
	InputDevice	"Synaptics Touchpad"
EndSection

Maybe somebody would like to help clear up this whole new Xorg mystery?

Blessings,

Nigel