force high resolution on boot (no monitor)

[Chris Campbell]

I've got a friend who's having trouble getting this to work. He has a
PC with the display "remoted" via a VGA extender (not a cable, an
electronic bridge). Apparently this looks to the PC like no monitor
is connected at all.

With a monitor connected directly, the computer boots up into the
desired high-res display. With no monitor, or with the VGA extender
connected, it boots up into 640x480. No matter what display settings
tweaking he does (I believe he's been at this for days), it will not
boot to high-res if it doesn't detect a monitor.

I thought it might be a DDC thing, but there was no such capability
listed in the BIOS (where I had hoped to disable it).

Anyone know how to FORCE Windows to go to a particular resolution?
Registry hack?

 

[Stanislaw Flatto]

I've got a friend who's having trouble getting this to work. He has a
PC with the display "remoted" via a VGA extender (not a cable, an
electronic bridge). Apparently this looks to the PC like no monitor
is connected at all.

With a monitor connected directly, the computer boots up into the
desired high-res display. With no monitor, or with the VGA extender
connected, it boots up into 640x480. No matter what display settings
tweaking he does (I believe he's been at this for days), it will not
boot to high-res if it doesn't detect a monitor.

I thought it might be a DDC thing, but there was no such capability
listed in the BIOS (where I had hoped to disable it).

Anyone know how to FORCE Windows to go to a particular resolution?
Registry hack?

The "extender" presents itself as VGA capable display so the OS treats
it as such and displays
VGA graphics indiferent to what are the capabilities of the monitor.
Either get SVGA "extender" or live with the capabilities of system hardware.
As always, the weakest link determines overall performance.

HTH

Stanislaw
Slack user from Ulladulla.

 

[Chris Campbell]

[sorry about quoting everything]

The "extender" presents itself as VGA capable display so the OS treats
it as such and displays
VGA graphics indiferent to what are the capabilities of the monitor.
Either get SVGA "extender" or live with the capabilities of system hardware.
As always, the weakest link determines overall performance.

The extender is of course SVGA capable, sorry about using shorthand
and calling it "VGA". But the key piece of data is that WITH NOTHING
CONNECTED AT ALL to the computer, it boots up to the low resolution.
That eliminates the extender as the problem anyway.

I probably shouldn't have even mentioned the extender, as it only
confuses the issue.

Any ideas? Complete problem description is above. I can't be the
first person with this problem ...

 

[Stanislaw Flatto]

The extender is of course SVGA capable, sorry about using shorthand
and calling it "VGA". But the key piece of data is that WITH NOTHING
CONNECTED AT ALL to the computer, it boots up to the low resolution.
That eliminates the extender as the problem anyway.

I probably shouldn't have even mentioned the extender, as it only
confuses the issue.

Any ideas? Complete problem description is above. I can't be the
first person with this problem ...

Now you got me :'(
With "nothing connected at all" how do you get the info what the system
does?
If it is by some external connection, serial, parallel or whatever then
the capabilities of this connection have to be properly
configured otherwise the system cannot guess what is wanted and defaults
to "lowest common denominator".
Suggestion, try the extender on some "stupider", meaning not under
"dancing dervishes" influences,
(eg. Win98, Linux) system, and check if the symptoms are repeated.
BTW, does it happen on boot only?. Have you tried to insert the extender
on properly running system. It maybe worth a trial.

Have fun

Stanislaw.
Slack user from Ulladulla

 

[Stanislaw Flatto, the tuberculoid, gambling flea b]

Stanislaw.
****wit html poster from Ulladulla

Errors corrected.