1932 <xxxx@xxxx.com> wrote
> Gary <gary@wanadoo.ru> wrote
>> kony wrote
>>> Gary <gary@wanadoo.ru> wrote
>>>> Gary wrote

>>>>> I changed my old CRT monitor for a TFT one (Mirai). When I use the VGA connection, I can see
>>>>> all the starting sequence : post, lilo, launch of kubuntu (GNU/linux). But if I use the DVI
>>>>> connection, the monitor doesn't receive any signal untill the
>>>>> desktop starts. In this case, I can't access bios or the
>>>>> boot-loader, I don't see if the OS is starting correctly or not...

>>>>> I use an ATI Radeon 7500 graphics board with free drivers. My motherboard is Liteon NA380.

>>> The card should be able to use DVI the moment system is turned on, no driver factor involved.
>>> I'd replace it with something else, and probably nVidia based as the driver support tends to be
>>> better.

>> Thanks. The DVI is ok when the desktop starts but not before :-/
>> amazing !

> So there must be a driver involved, that is activated when the OS kicks in.

Or that monitor cant handle the other modes on the DVI, like with the bios screen
or that card isnt putting them out on the DVI connector for some reason.

The obvious thing to try is a different monitor and see if it shows
anything on the DVI input when the system is on the bios screen.