Cropped Display

[Mark Greenwood]

On Wednesday 10 Feb 2010 10:04:41 dael at dael.de wrote:
> 
> Zitat von Mark Greenwood <fatgerman at ntlworld.com>:
> >
> > OK, well here we go.
> >
> > The following is not guaranteed to work but it has worked on the two  
> > installations I have tried it on. It requires Linux to be installed  
> > to your hard disc.
> >
> > Note 1 : The following xorg.conf file was generated primarily from  
> > an install of Mandriva 2010.0, which seems to do a much better job  
> > of configuring this stuff than Ubuntu does. However even that didn't  
> > work perfectly until I did the steps involving gtf.
> >
> > Note 2 : The option 'PreferredMode' in the file below is recorded as  
> > 'not used' in the Xorg log. However, for me, it didn't work without  
> > it. Your mileage may vary.
> >
> > The file below is an example xorg.conf file - it needs to be edited  
> > and then copied to /etc/X11/xorg.conf.
> >
> > You will need to know the allowed horizontal sync and vertical  
> > refresh rates for your monitor or TV. These go as the parameters  
> > 'HorizSync' and 'VertRefresh' as described in the file. These are  
> > the crucial values to make this work. They may or may not be  
> > specified in the gazillion pages of manual for your TV that your  
> > probably threw away when you bought it. I know I did. If you cannot  
> > find these values out you have 3 possible courses of action:
> > 1) Guess - the values below might even work.
> > 2) Install Mandriva 2010.0. This will give you an xorg.conf file  
> > that might even work. That's where mine came from.
> > 3) Kick the PC and go have a beer instead.
> >
> > Once you have those you need to generate a ModeLine using the 'gtf' program.
> > In a terminal, type
> >
> > gtf 1360 768 60
> >
> > (The parameters are : Horizontal resolution, vertical resolution,  
> > refresh rate)
> > 60Hz refresh should work with any TV. If you're in Europe and plan  
> > on using this as a media centre PC, 50Hz is a better choice as it is  
> > exactly twice the PAL refresh rate. 100Hz is even better. However  
> > many modern TVs won't do a 50Hz or 100Hz refresh and a lot of intel  
> > graphics cards won't do 100Hz at this (or indeed any) resolution.  
> > Mine doesn't :( Try 60 first. If it works, then get adventurous.
> >
> > gtf will output a 'ModeLine'. You should paste this into the file  
> > where indicated, replacing mine.
> >
> > Reboot and see what happens. If it doesn't work, check the settings  
> > under KDE before you go to option (3).
> >
> > If you reboot and get a black screen you'll have to switch to  
> > another terminal (Ctrl-Alt-F4), log in, delete or rename xorg.conf,  
> > and reboot again. If this happens you probably have your Sync or  
> > Refresh values wrong.
> >
> > Good luck....
> >
> > Mark
> 
> 
> I tried the mandriva live cd, the result is even worse than with  
> kubuntu. Only a small square on the screen is displayed.
> However, thanks for your explanations. At the moment I will wait for  
> more stable intel drivers. I saved your mail and hopefully it will  
> solve my problems later ;)

Haha, thats, similar to what happened with me and Mandriva 2010 - it chose a completely inappropriate resolution (1360x765 (!) ). However the point is that is gave me the correct values to use for HorizSync and VertRefresh. I was then able to use those values, along with the ModeLine generated by gtf from an Ubunutu install, to get a fully working display. However it is a lot of trouble to go to. I don't think you will get the values from Mandriva without doing a full install of that.

Mark

> 
> Daniel
> 
> 
> 
>