X configuration for Apple 23inch widescreen LCD (was: Login problem)

Markus Kolb ubuntu-ml at tower-net.de
Thu Sep 23 00:12:41 UTC 2004

On 23.09.2004 01:29, Al Simcoe schrieb:
> On Sep 22, 2004, at 6:34 PM, Markus Kolb wrote:
>> On 23.09.2004 00:02, Al Simcoe schrieb:
> Yes, I have gone there. Only 1 resolution is available.....640 x 480  @ 
>  60Hz
> If I click on the drop down menu to change, nothing happens.
> No other choice is available.
> Is this because during the installation, the Ubuntu installer did not 
> understand my monitor, which is the:
>     Apple 23 inch Cinema Flat Panel LCD Display
>> You can set the monitor frequency, too.
>> If there is not the resolution for your LCD you have to reconfigure 
>> the Xserver.
> So, can I just configure as below with the kind of monitor that I have?
>> For this run the console command: sudo dpkg-reconfigure xserver-xfree86
>> You can just hit enter for the most questions. It will be used the 
>> current configuration.
>> You will be asked about the screen resolution for your Xserver again. 
>> You can choose it with a [*] in front of them. The highest resolution 
>> is first tried so take the one for your LCD as the highest.
>> When you go on there will be the question for monitor frequencies. 
>> Choose the right entries for your LCD.
>> I hope I could help.
> Hmmmmm  I just ran the above config file.
> It asked for much more than you indicated above,
> I made certain changes including video driver info.
> I think it was incorrect and now it will not even boot into X.

Do you remember the preconfigured video card driver?
Run "sudo dpkg-reconfigure xserver-xfree86" again and select the other 
Which resolution do you have selected? Do you know the right one for 
your LCD?
I have found this:
     * 1920 by 1200 pixels (optimum resolution)
     * 1280 by 800 pixels
     * 1024 by 640 pixels

These wide screen resolution are not supported in the xserver debconf.
I think it is best to start with 1200 x 800 resolution. It is the best 
fit to fill your screen.

You'll have to edit the /etc/X11/XF86config-4 yourself to get the best 
out of your screen I think. Maybe someone can give more tips on this 

The frequencies are important, too.
If it is out of range for your LCD it will stay black or maybe some 
monitor information box appears.
I am sorry but I don't know this specification about your hardware, so I 
can not say you have to choose this and that.

Which video card do you have?

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