[Openchrome-users] Problem: Openchrome, Ubuntu 7.10, and VN800

[Xavier Bachelot]

Coady Buckley-Zistel wrote:
> I have installed the openchrome driver in Debian Etch, Fedora 8, and 
> Ubuntu 7.10. In the case of the Debian and Fedora the driver is 
> recognised, X-server and GDM load without trouble. The driver is being 
> loaded:
> Code:
>     grep openchrome /var/log/Xorg.0.log
> 
> (II) LoadModule: "openchrome"
> 
> In the case of Ubuntu 7.10 the openchrome driver is loaded but 
> 'X-server' fails and GDM will not load. This has been the case with both 
> upgrades and fresh installs of Ubuntu 7.10. The X-server defaults to 
> 'xorg.conf.failsafe'.
> 
> Can someone please help me with this...?
> 
> I am no expert, but on comparing the 'Xorg.0.log' files in both Debian 
> Etch and Ubuntu 7.10 the only lines I can find that look suspect are the 
> following:
> 
>  From Ubuntu:
> -----------------
> (II) VIA(0): Generic Monitor: Using default hsync range of 28.00-33.00 kHz
> (II) VIA(0): Generic Monitor: Using default vrefresh range of 
> 43.00-72.00 Hz
...snip
>  From Debian:
> -----------------
> (II) VIA(0): Generic Monitor: Using default hsync range of 31.50-37.90 kHz
> (II) VIA(0): Generic Monitor: Using default vrefresh range of 
> 50.00-70.00 Hz

The reported Hsync and Vsync from the (supposedly) identical monitor are 
not the same. I'd assume the monitor doesn't advertise them properly and 
then X falls back to the defaults with are not the same from one distro 
to the other. I'd try to force the monitor's Hsync and Vsync to the 
values given by Debian in your Ubuntu conf. Or even better, find what 
the correct values for your monitor are from the manufacturer 
documentation and use these values.


Regards,
Xavier