Cannot Change Video Resolution

[pwhbeck]

I am running SUSE 10.1.
Video card is a Diamond Stealth 64 Video 2001 with S3 86C765 chip.
Monitor is ViewSonic E771.
SAX2 reports both card and monitor correctly.
If I set SAX2 resolution to 800x600 or 1024x768 or anything else, the resolution remains the same. It looks to me like 800x600.

I would appreciate suggestions.
Peter

[rong]

Take a look at the config file /etc/X11/xorg.conf. Are the 1024 x 768 settings listed there and are the monitors vertical and horizontal settings in agreement with the specs for your monitor? If not, edit this file with the correct settings.

You can check what resolution you are running by going into YAST > Hardeare > Graphics Card and Monitor.

[pwhbeck]

Yast says 1024x768 but it looks like 800x600 to me and the look doesn't change regardless of the Yast setting.

I have looked at xorg.conf and it's man page several times but still don't understand xorg.conf. I don't see how X gets from Device to Screen to Monitor to Modes to the particular Modeline to use. Please bear with me.

Monitor settings agree with E771 specs.
But Modelines do not agree with the User Guide, which has the following entries:
1024 x 768 @ 60 Hz H: 48.36 Khz V: 60 Hz
1024 x 768 @ 75 Hz H: 60 Khz V: 75 Hz <- Recommended setting
1024 x 768 @ 85 Hz H: 68.68 Khz V: 85 Hz

Section "Monitor"
DisplaySize 345 259
HorizSync 30-70
Identifier "Monitor[0]"
ModelName "E771"
VendorName "VIEWSONIC"
VertRefresh 50-120
UseModes "Modes[0]"
EndSection

Section "Modes"
Identifier "Modes[0]"
Modeline "1024x768" 96.73 1024 1088 1200 1376 768 769 772 808
Modeline "1024x768" 95.50 1024 1088 1200 1376 768 769 772 807
Modeline "1024x768" 94.39 1024 1088 1200 1376 768 769 772 807
Modeline "1024x600" 96.87 1024 1088 1200 1376 600 601 604 640
Modeline "1024x600" 95.84 1024 1088 1200 1376 600 601 604 639
Modeline "1024x600" 94.96 1024 1088 1200 1376 600 601 604 639
Modeline "800x600" 75.47 800 848 936 1072 600 601 604 640
Modeline "800x600" 74.67 800 848 936 1072 600 601 604 639
Modeline "800x600" 73.98 800 848 936 1072 600 601 604 639
Modeline "768x576" 73.03 768 824 904 1040 576 577 580 616
Modeline "768x576" 72.27 768 824 904 1040 576 577 580 615
Modeline "768x576" 71.64 768 824 904 1040 576 577 580 615
Modeline "640x480" 51.43 640 680 744 848 480 481 484 514
Modeline "640x480" 51.00 640 680 744 848 480 481 484 514
Modeline "640x480" 50.56 640 680 744 848 480 481 484 514
EndSection

Section "Screen"
DefaultDepth 16
SubSection "Display"
Depth 15
Modes "1024x768" "1024x600" "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1024x768" "1024x600" "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"

Section "Device"
BoardName "86c764/765"
BusID "0:12:0"
Driver "s3"
Identifier "Device[0]"
Screen 0
VendorName "S3"
EndSection

Thaks for looking at this.
Peter

[rong]

Strange indeed.

Try running sax2 from command line as root though theoretically it shouldn't make any difference.

Whoops, I see you already have done that. I don't know and I have to run now. Sorry I can't help at the moment.

[pwhbeck]

You said the magic word. I was running Sax2 as root, but in an X command line window. I started Sax2 from the Linux command line (before starting X) and the configuration change worked.

Thank you very much.
Peter

[rong]

Good. I know the feeling!!!