Photon graphics chip driver problem

QNX Newsgroups (Archives) qdn.public.qnx4
1

I have installed the latest 1.14C photon runtime package from quics, but
have the following problem:

When I set the screen resolution to anything higher than 680x480 I only get
a portion of the “desktop” (by desktop I mean what you would expect to see
on a single monitor on a correctly operating system). Instead, the screen
appears to remain at 680x480, so I see only a portion of the desktop. If I
phditto the machine from another (correctly working) machine, I seem the
full desktop as I would expect.

The errant machine is a DSP Design TB486 PC104 computer. It has a Chips
T65550 graphics chip on it. Photon seems to be correctly picking up the
chips driver in its configuration.

Help would be appreciated.

thanks

Julian Thornhill

2

Hi Julian,

In your trap filea add a -F option to the modeswitcher (after the
chipsbios.ms) and see if that helps.

Regards,

Joe

Julian Thornhill <jth@ion.le.ac.uk> wrote:

I have installed the latest 1.14C photon runtime package from quics, but
have the following problem:

When I set the screen resolution to anything higher than 680x480 I only get
a portion of the “desktop” (by desktop I mean what you would expect to see
on a single monitor on a correctly operating system). Instead, the screen
appears to remain at 680x480, so I see only a portion of the desktop. If I
phditto the machine from another (correctly working) machine, I seem the
full desktop as I would expect.

The errant machine is a DSP Design TB486 PC104 computer. It has a Chips
T65550 graphics chip on it. Photon seems to be correctly picking up the
chips driver in its configuration.

Help would be appreciated.

thanks

Julian Thornhill

3

You could try to disable the LCD support in the BIOS.
Then retrap.

On Thu, 14 Jun 2001 11:35:41 +0100, “Julian Thornhill” <jth@ion.le.ac.uk> wrote:

I have installed the latest 1.14C photon runtime package from quics, but
have the following problem:

When I set the screen resolution to anything higher than 680x480 I only get
a portion of the “desktop” (by desktop I mean what you would expect to see
on a single monitor on a correctly operating system). Instead, the screen
appears to remain at 680x480, so I see only a portion of the desktop. If I
phditto the machine from another (correctly working) machine, I seem the
full desktop as I would expect.

The errant machine is a DSP Design TB486 PC104 computer. It has a Chips
T65550 graphics chip on it. Photon seems to be correctly picking up the
chips driver in its configuration.

Help would be appreciated.

thanks

Julian Thornhill

4

“Hardware Support Account” <hw@qnx.com> wrote in message
news:9gadhm$838$1@nntp.qnx.com…

Hi Julian,

In your trap filea add a -F option to the modeswitcher (after the
chipsbios.ms) and see if that helps.

Regards,

Joe

Worked a treat - what does this fantastic option do? (Well apart from make

things work…)

5

Hi Julian,

This option tells the modeswitch to run in CRT mode and disable LCD displays.
The problem you were seeing was that your BIOS thought it was displaying to a
640x480 LCD display, not a CRT (monitor). That is why in higher resolutions you
would only see part of the display.

Regards,

Joe

Julian Thornhill <jth@ion.le.ac.uk> wrote:

“Hardware Support Account” <> hw@qnx.com> > wrote in message
news:9gadhm$838$> 1@nntp.qnx.com> …
Hi Julian,

In your trap filea add a -F option to the modeswitcher (after the
chipsbios.ms) and see if that helps.

Regards,

Joe

Worked a treat - what does this fantastic option do? (Well apart from make
things work…)