[TriLUG] Red Hat 9 and Samsung Monitor
Mike
myname17 at bellsouth.net
Fri May 2 21:33:16 EDT 2003
I got it to work! In case anyone else needs to do this.
First run gtf
[mike at TUX logs]$ su root
Password:
[root at TUX logs]# gtf
usage: gtf x y refresh [-v|--verbose] [-f|--fbmode] [-x|-xf86mode]
x : the desired horizontal resolution (required)
y : the desired vertical resolution (required)
refresh : the desired refresh rate (required)
-v|--verbose : enable verbose printouts (traces each step of the computation)
-f|--fbmode : output an fbset(8)-style mode description
-x|-xf86mode : output an XFree86-style mode description (this is the default
if no mode description is requested)
[root at TUX logs]# gtf 1024 768 100
# 1024x768 @ 100.00 Hz (GTF) hsync: 81.40 kHz; pclk: 113.31 MHz
Modeline "1024x768_100.00" 113.31 1024 1096 1208 1392 768 769 772 814
HSync +Vsync
[root at TUX logs]#
Then modify XF86Config. The modeline is long and wraping KMail, but not the
config file.
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "S/M 955DF"
DisplaySize 360 270
HorizSync 30.0 - 85.0
VertRefresh 50.0 - 160.0
Option "dpms"
# 1024x768 @ 100.00 Hz (GTF) hsync: 81.40 kHz; pclk: 113.31 MHz
Modeline "1024x768_100.00" 113.31 1024 1096 1208 1392 768 769 772
814 -HSync +Vsync
EndSection
Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 16
SubSection "Display"
Depth 16
Modes "1024x768_100.00" "1024x768" "800x600" "640x480"
EndSubSection
EndSection
Thanks,
Mike
On Friday 02 May 2003 15:49, David A. Cafaro wrote:
> Maybe you could go back to the old way and specify a modeline for each
> of your resolutions? Looking though my Xfree86 log I find examples such
> as these:
>
> *Default mode "1600x1200": 229.5 MHz, 106.2 kHz, 85.0 Hz
> Modeline "1600x1200" 229.50 1600 1664 1856 2160 1200 1201 1204 1250
> +hsync +vsync
>
> *Default mode "1024x768": 94.5 MHz, 68.7 kHz, 85.0 Hz
> Modeline "1024x768" 94.50 1024 1072 1168 1376 768 769 772 808
> +hsync +vsync
>
> Interestingly enough it looks like the HorizSync and VertRefresh
> statements never try anything over 85.3 Hz on my system even though I
> know I can run much much more at low resolutions (1280x1024 and under
> should be able to do 100Hz+). My guess is your best bet will be to
> manually specify modelines to force X to higher refresh rates.
> Unfortunately it's been a long time since I did modelines manually...
>
> -David
>
> On Fri, 2003-05-02 at 15:22, Mike wrote:
> > Sigh. Actually I'm trying to increase my vertical refresh rate from 85
> > Hz to 100 Hz. I edited /etc/X11/XF86Config and changed VertRefresh 50.0
> > - 160.0 to VertRefresh 100.0. When I rebooted the sytem complained and
> > I managed to reset the monitor back to what it was.
> >
> > I've researched this before and it appears that the problem is not in the
> > monitor section. What I need is a way to make the xserver try to drive
> > the monitor at 100Hz, perhaps with an option in
> > Section "Screen"
> > SubSection "Display"
> >
> > Thanks,
> > Mike
> >
> > # XFree86 4 configuration created by redhat-config-xfree86
> >
> > Section "ServerLayout"
> > Identifier "Default Layout"
> > Screen 0 "Screen0" 0 0
> > InputDevice "Mouse0" "CorePointer"
> > InputDevice "Keyboard0" "CoreKeyboard"
> > InputDevice "DevInputMice" "AlwaysCore"
> > EndSection
> >
> > # Portion removed to save space...
> >
> > Section "Monitor"
> > Identifier "Monitor0"
> > VendorName "Monitor Vendor"
> > ModelName "S/M 955DF"
> > DisplaySize 360 270
> > HorizSync 30.0 - 85.0
> > VertRefresh 50.0 - 160.0
> > Option "dpms"
> > EndSection
> >
> > Section "Device"
> > Identifier "Videocard0"
> > Driver "nv"
> > VendorName "Videocard vendor"
> > BoardName "RIVA TNT2"
> > EndSection
> >
> > Section "Screen"
> > Identifier "Screen0"
> > Device "Videocard0"
> > Monitor "Monitor0"
> > DefaultDepth 16
> > SubSection "Display"
> > Depth 16
> > Modes "1024x768" "800x600" "640x480"
> > EndSubSection
> > EndSection
> >
> > On Friday 02 May 2003 10:59, Joseph Tate wrote:
> > > Look in /etc/X11/XF86config for a "Monitor". There should be a line
> > > that says VertRefresh. Change that from 68 to 100, or if you don't
> > > have it, insert it below HorizSync and above ModeLine. And I don't
> > > think you mean 68k or 100k but rather 60 Hz or 100 Hz.
> > >
> > > Mike wrote:
> > > >I need to know how to adjust the vertical refresh rate in RH9 (or buy
> > > > a new monitor which I can't afford). The problem is that it has this
> > > > really annoying whine at 68k (which is the Red Hat/X windows default)
> > > > but not at 100k which the hardware will support. Some details:
> > > >
> > > >Red Hat 9
> > > >Samsung SyncMaster 955df
> > > >Nvidia TNT2 Vanta LT 16MB AGP
> > > >1024x768 16 bit color
> > > >
> > > >Any ideas?
> > > >
> > > >Thanks,
> > > >Mike
> > > >_______________________________________________
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