Hi

I am running RedHat 9 on a PC. It has an onboard Intel 865 video
chipset. My monitor is an SGI GDM-4011P.

I am running XWindows with a screen resolution of 1024x768. I want to
run this mode with a refresh rate of 85Hz. However, I cannot get the
monitor to run at above 60Hz when XWindows is running.

My machine is dual-boot, and Windows XP runs 1024x768 @ 85 Hz without a
problem. So I know the chipset/monitor can support that mode.

I have tried several modeline calculator utilities to generate ModeLine
entries for my XF86Config, but none of them ever work - I always get
the 60Hz refresh rate (even for 800x600 resolution). I checked my
/var/log/XFree86.0.log to see what is going on, but it was not too
helpful.

Any suggestions on how to get this working?

Thanks,

Andrew.

["Followup-To:" header set to comp.os.linux.x.]
On 6 Jun 2005 11:35:16 -0700, andrew_bonello@yahoo.co.uk staggered into
the Black Sun and said:
> I am running RedHat 9 on a PC.

Redhat 9's been EOLed for almost 2 years. It's time to upgrade to
something more recent.

> onboard Intel 865 video chipset. My monitor is an SGI GDM-4011P. I am
> running X with a screen resolution of 1024x768. I want to run this
> mode with a refresh rate of 85Hz. Windows XP runs 1024x768 @ 85 Hz
> without a problem. So I know the chipset/monitor can support that
> mode.
>
> I always get the 60Hz refresh rate (even for 800x600 resolution).

Make sure you're using the proper X module for the card. If you're
always getting 60Hz, you may be using the VESA X module, which is locked
to 60Hz. "grep Driver /etc/X11/XF86Config-4" should return at least one
line which says 'Driver "i810" ', because the i865 uses the i810 X
module. Also, make sure the HorizSync and VertRefresh ranges in your X
config file are correct. The Hsync and Vsync ranges should be in your
monitor's paper manual, or available if you Google "SGI GDM-4011P". In
fact, Google says the Hsync is 30-85 and Vsync is 50-100 for this
monitor.

Of course, it's always possible that the old X that shipped with Redhat
9 doesn't support the i865 chipset. If that's the case, it's time to
upgrade.

--
Matt G|There is no Darkness in Eternity/But only Light too dim for us to see
Brainbench MVP for Linux Admin / mail: TRAP + SPAN don't belong
http://www.brainbench.com / Hire me!
-----------------------------/ http://crow202.dyndns.org/~mhgraham/resume

On Mon, 06 Jun 2005 11:35:16 -0700, andrew_bonello wrote:

> Hi
>
> I am running RedHat 9 on a PC. It has an onboard Intel 865 video
> chipset. My monitor is an SGI GDM-4011P.
>
> I am running XWindows with a screen resolution of 1024x768. I want to
> run this mode with a refresh rate of 85Hz. However, I cannot get the
> monitor to run at above 60Hz when XWindows is running.
>
> My machine is dual-boot, and Windows XP runs 1024x768 @ 85 Hz without a
> problem. So I know the chipset/monitor can support that mode.
>
> I have tried several modeline calculator utilities to generate ModeLine
> entries for my XF86Config, but none of them ever work - I always get
> the 60Hz refresh rate (even for 800x600 resolution). I checked my
> /var/log/XFree86.0.log to see what is going on, but it was not too
> helpful.
>
> Any suggestions on how to get this working?

Yes.

Don't waste our time (and your own) on a long obsolete distribution.
Install a recent one (Fedora 4) and come back if you still have a problem
(which is unlikely).


--
Vladimir