Dual Screen and Presentations

[SerpentMage]

I give presentations at conferences. I can do dual view because of the toggle on my Dell Notebook. HOWEVER, the problem I have is that while the output to the presentation screen is the correct resolution, on my notebook I have 640x480 in scrolled mode. What is the problem since my notebook can display at the resolutions required....

I am running Redhat 8.0 with the NVDIA's drivers.

Thanks

[Andy Mecham]

Are you in clone mode? What's the external display device you're using? What modes does it support? Can you attach a XF86Config and /var/log/XFree86.0.log file showing this?

Thanks!

--andy

[SerpentMage]

Here is the requested information: (log file)
**********************
(**) NVIDIA(0): Validated modes for Display Device 1:
(**) NVIDIA(0): Default mode "640x480": 25.2 MHz, 31.5 kHz, 60.0 Hz
(WW) NVIDIA(0): Unable to find mode "1024x768" for Display Device 1 in
(WW) NVIDIA(0): MetaMode "1024x768"
(II) NVIDIA(0): Attempting to find the next largest mode for Display 1 for
(II) NVIDIA(0): mode "1024x768"
(II) NVIDIA(0): Found mode "640x480" for Display Device 1 to use instead of
(II) NVIDIA(0): mode "1024x768"
(WW) NVIDIA(0): Unable to find mode "800x600" for Display Device 1 in MetaMode
(WW) NVIDIA(0): "800x600"
(II) NVIDIA(0): Attempting to find the next largest mode for Display 1 for
(II) NVIDIA(0): mode "800x600"
(II) NVIDIA(0): Found mode "640x480" for Display Device 1 to use instead of
(II) NVIDIA(0): mode "800x600"
(--) NVIDIA(0): Display dimensions: (320, 240) mm
(--) NVIDIA(0): DPI set to (81, 81)
(II) NVIDIA(0): Setting mode "1024x768"
*************************
And part of the configuration file

*************************
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Generic Laptop Display Panel 1400x1050"
HorizSync 31.5 - 90.0
VertRefresh 59.0 - 75.0
Option "dpms"
EndSection

Section "Device"
# no known options
# Driver "vesa"
#BusID
Identifier "NVIDIA GeForce 4 (generic)"
Driver "nvidia"
VendorName "NVIDIA GeForce 4 (generic)"
BoardName "NVIDIA GeForce 4 (generic)"
EndSection

Section "Screen"
Identifier "Screen0"
Device "NVIDIA GeForce 4 (generic)"
Monitor "Monitor0"
DefaultDepth 16
SubSection "Display"
Depth 16
Modes "1024x768" "800x600" "640x480"
EndSubSection
EndSection

Section "DRI"
Mode 0666
EndSection

[Andy Mecham]

From this, it looks like your projector doesn't support anything higher than 640x480, but I can't be sure - can you please post complete XFree86.0.log and XF86Config files?

Thanks!

--andy

[SerpentMage]

The problem is not the projector. The projector can support the 1024x768 resolution with no problem. It actually comes out right. The problem lies with the laptop screen.

When I switch using my dell toggle, the screen on my laptop switches from 1024x768 to 1024x768 scroll mode in a 640x480 screen.

So support is no problem, but it switches into a mode I am not keen on.

[bwkaz]

Does switching your MetaModes string around help? E.g. instead of "1024x768,640x480", try "640x480,1024x768".