problem with resolution

vladakg85 · 02-04-2007, 05:02 AM

ok Slackware 11 kernel 2.6.19.2 newest nvidia driver, geforce 7300gt, monitor tft wide
I installed this driver but here is the problem:
I go to nvidia-settings to setup resolution 1440x900 60hz and thats OK, but when I go to kde configure monitor there is 1440x900 80hz. Thats imposible! How to be sure everything is OK? And if I want to edit xorg.conf what steps should I take for securing myself?
Please help me I don't want to kill my monitor!

jschiwal · 02-04-2007, 05:31 AM

Make sure your display can handle 80hz refresh rate. That seams a bit high for an LCD monitor, but maybe that is a difference between active and passive displays.

For LCD monitors I would recommend keeping it normally at the native resolution. Assuming that is 1440x900, you could generate your own Modeline using the gtf program.

Code:

> gtf 1440 900 60 -x

  # 1440x900 @ 60.00 Hz (GTF) hsync: 55.92 kHz; pclk: 106.47 MHz
  Modeline "1440x900_60.00"  106.47  1440 1520 1672 1904  900 901 904 932  -HSync +Vsync

I would recommend dropping the ".00" in the label:

Code:

  # 1440x900 @ 60.00 Hz (GTF) hsync: 55.92 kHz; pclk: 106.47 MHz
  Modeline "1440x900_60"  106.47  1440 1520 1672 1904  900 901 904 932  -HSync +Vsync

If your /etc/X11/xorg.conf file has a Modelines section, then insert it there. If not, insert it in the "Monitor" section. In the latter, the "Monitor" section will have a statement like: "UseModes Modelines[0]" to include the modelines.

These values are just an example. Run "gtf" on your own system. Best results might be obtained if the system isn't loaded down when you run it.

To safely change the xorg.conf file, back the old one first. For example "mv xorg.conf xorg.conf.bu"

You can edit it from the console using "sudo vim /etc/X11/xorg.conf" or use any editor. You can use "kdesu kate /etc/X11/xorg.conf" if you aren't familiar with vim and are in KDE.

Junior Hacker · 02-04-2007, 05:32 AM

The minute you make changes to your xorg.conf file, a new file should show up in /etc/X11 called "xorg.conf.backup.nvidia. That file is your safety.

Junior Hacker · 02-04-2007, 05:37 AM

Sorry jschiwal

We posted at the same time, I agree, the refresh rate seems a little high, it should be around 60hz. As I mentioned above, if you want to go back to original xorg.conf, just re-name the xorg.conf.backup.nvidia to xorg.conf after deleting the modified xorg.cong file, and log out and log back in.

vladakg85 · 02-04-2007, 06:32 AM

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 1.0 (buildmeister@builder3) Fri Dec 15 10:13:06 PST 2006

Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection

Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
FontPath "/usr/X11R6/lib/X11/fonts/misc/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/Type1/"
FontPath "/usr/X11R6/lib/X11/fonts/CID/"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/cyrillic/"
FontPath "/usr/X11R6/lib/X11/fonts/TTF/"
EndSection

Section "Module"
Load "dbe"
Load "extmod"
Load "type1"
Load "freetype"
Load "glx"
EndSection

Section "ServerFlags"
Option "Xinerama" "0"
EndSection

Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection

Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Maxdata (RogenTech) B1925S1W"
HorizSync 31.0 - 83.0
VertRefresh 56.0 - 75.0
Option "DPMS"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 7300 GT"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
Option "metamodes" "1440x900_60 +0+0; 800x600 +0+0; 640x480 +0+0"
SubSection "Display"
Depth 24
Modes "1600x1200" "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
EndSection
=========================
this is mine xorg.conf, and monitor
http://www.belinea.com/Products/TFT_...8&artnr=111932
jschiwal
I ussualy don't like to somebody do job for me but I am scared and not shure about this so can you edit my xorg.conf please.

jschiwal · 02-04-2007, 12:30 PM

From your monitor's spec sheet:

Code:

Max. image refresh rates in Hz
for resolution analogue / digital
640 x 480 75 / –
800 x 600 75 / –
1024 x 768 75 / –
1152 x 864 75 / –
1280 x 1024 75 / –
1400 x 900 60 / –

So for 1400 x 900, use "gtf 1400 900 60 -x" to generate a modeline.

vladakg85 · 02-04-2007, 12:50 PM

root@vlada:/home/zajcev/zajcev/kde# gtf 1400 900 60 -x
bash: gtf: command not found
root@vlada:/home/zajcev/zajcev/kde# which gtf
which: no gtf in (/usr/local/sbin:/usr/local/bin:/sbin:/usr/sbin:/bin:/usr/bin)
root@vlada:/home/zajcev/zajcev/kde#

jschiwal · 02-06-2007, 07:22 AM

For SuSE, the gtf program is installed along with the Xorg server package.

On my system:
which gtf
/usr/bin/gtf
jschiwal@hpmedia:~> rpm -qf /usr/bin/gtf
xorg-x11-server-7.2-30

However, for you it might by under /usr/lib/X11/bin/ or /usr/X11R6/bin/ or something similar, so you might have it but it isn't in your path.