Video mode not supported for LCD monitor

[Malcolm Fitzgerald]

On 22/05/2006, at 12:42 PM, Malcolm Fitzgerald wrote:

>
> On 22/05/2006, at 10:46 AM, rod person wrote:
>
>> On Mon, 22 May 2006 10:36:17 +1000
>> Malcolm Fitzgerald <mfitzgerald at pacific.net.au> wrote:
>>
>>> I've just replaced my trusty CRT screen with a spunky LCD screen.
>>> After the machine boots I don't see the login window. Instead I see a
>>> bouncing box that says "Video Mode not Supported". How do I rectify
>>> this?
>>>
>>
>> You have to correct your vertical refresh in your xorg.conf.
>> I had to add the line:
>> 	VertRefresh   75
>>
>> to the monitor section when I went from CRT to LCD.
>
> That didn't work for me.
>
> When I use -configure to generate a conf file the Monitor specs seem 
> to fit my monitor but the monitor won't use it.
>
> Looking at /var/log/Xorg.0.log I can see that it tries all the modes 
> and says this for each of them:
>
> (II) NV(0): Mode "1024x768" is larger than BIOS programmed panel size 
> of 1 x 1. Removing.
> (II) NV(0): Not using default mode "1024x768" (unknown reason)
> (II) NV(0): Not using default mode "512X384" (bad mode 
> clock/interlace/doublescan)
>
> ....
>
> (EE) Screen(s) found, but none have a usable configuration.
>
> Fatal server error:
> no screens found
>
>
> Funnily enough, when I passed Xorg -config a non-existent config file 
> name (by accident) it displayed the black and grey grid with the X in 
> the middle.

Editing /etc/ttys so that the system booted to console instead of 
starting X, then removing the xorg.conf, then running Xorg -configure 
generated a conf file that worked. It looks the same as the the first 
one that was generated but the system likes this one better.

thanks