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-   -   problem with X-4.3 + flat panels using dvi cables and nvidia graphics card (http://www.nvnews.net/vbulletin/showthread.php?t=28712)

freelsjd 05-13-04 03:57 PM

problem with X-4.3 + flat panels using dvi cables and nvidia graphics card
I am having a nagging problem with my Nvidia-GeForce FX 5200 video
card. I am hoping to get some help from this forum(s) on how to correct
the problem(s). Please reply directly or through the forum with
advise on this problem.

First, let me give some details of my setup. The video card is a PCI
card, not AGP. This is because the Intel-SE7500CW2 server board I am
using as my desktop does not have an AGP slot (found this out after I
ordered it !) Part of my problem may be related to this fact (PCI
card). I also have a DEL-2000FP flat-panel monitor with a DVI video
cable coupling the video card to the monitor.

I am using XFree86-4.3.0.dfsg.1-1 out of Debian/Sid distribution of
Linux. I have also tried backports from snapshot.debian.net to
4.3.0-7 with no improvement.

I am not exactly sure when this problem started to show up. Most likely
when the card was initially installed replacing the ATI card. I do not
think it is related to recent upgrades to X or the kernel.

I do not have any of these problems on a similarly configured
Debian/Sid at home that has a regular CRT monitor (not flat panel and
not dvi). Therefore, I think the problem is unique to flat panel
monitors with dvi inputs/cables.

Also none of these problems (including the 2.6.x problems below)
existed on using a slower ATI-Radeon 9200 pci card. I want the nvidia
card to gain the speed for 3D graphics applications. I also like
nvidia cards in general and have purchased several for several
different computers.

Here is what works:

kernel version 2.4.26 + nvidia driver in any mode within X windows
kernel version 2.4.26 + Xfree86 nv driver in 1024x768 resolution or
less + vga console

Here is what is crippled:

kernel version 2.4.26 + nvidia driver at the vga console after X
starts. The screen is full of streaks in both x and y direction with
constant "noise" to the screen. Nothing appears to be able to remove
this noise.

Here is what is completely broken:

kernel version 2.6.6 + nvidia or nv driver in X windows. It installs
fine, but produces blank screens.

Here is what I have tried in looking at FAQ and other questions
answered on the net:

As boot options (or append strings in lilo.conf):


Essentially every available option in the nvidia driver including
(currently commented out, trying one at a time):

# Option "FlatPanelProperties" "Scaling = default, Dithering =
# Option "UseInt10Module" "1"
# use the following option only with DVI cards
## Option "ConnectedMonitor" "DFP"
## Option "IgnoreDisplayDevices" "TV"
# Option "NoBandWidthTest" "1"
# Option "DigitalVibrance" "255"
# Option "RenderAccel" "0"
# Option "NoRenderExtension" "1"
# Option "NoFlip" "1"
## Option "NvAGP" "0"
# Option "SWCursor" "1"
# Option "HWCursor" "0"
## Option "CursorShadow" "true"
# Option "CursorShadowAlpha" "64" # range 0 (transparent) to 255
# Option "CursorShadowYOffset" "2" # range 0 to 32 pixels
# Option "MultisampleCompatibility" "1"

The following options in the nv driver:

## Driver "nv"
## Option "FlatPanel" "1"
## Option "FPDither" "1"

Here is what I presently have in the relevant sections of my
/etc/X11/XFConfig-4 file:

Section "Module"
Load "dbe"
Load "extmod"
Load "glx"
Load "record"
Load "bitmap"
Load "freetype"
Load "speedo"
Load "type1"
Load "vbe"
Load "int10"
#nvidia Load "ddc"
#nvidia Load "dri"
#nvidia Load "pex5"
#nvidia Load "GLcore"
#nvidia Load "xie"

Section "Device"
Identifier "Chaintech GeForce FX-5200"
Driver "nvidia"
Option "NoLogo" "true"
Option "NoDDC" "true"
Option "ConnectedMonitor" "DFP"
Option "IgnoreDisplayDevices" "TV"
Option "NvAGP" "0"
Option "CursorShadow" "true"

Section "Monitor"
Identifier "Dell 2000FP"
HorizSync 31-80
VertRefresh 56-76
# vsync=60 and hxync=75 is the optimum for 1600x1200 according to Dell's
## VertRefresh 60
## HorizSync 75
vendorname "[Dell 2000FP]"
modelname "[Dell 2000FP]"
Option "dpms"

Section "Screen"
Identifier "fea"
Device "Chaintech GeForce FX-5200"
Monitor "Dell 2000FP"
DefaultDepth 24
DefaultFbBpp 32
SubSection "Display"
Depth 24
Modes "1600x1200" "1400x1050" "1280x1024" "1152x864" "1024x768"
# only mode that appears to work correctly with the Xfree86 nv driver
## Modes "1024x768"

Finally, here is the /var/log/XFree86.0.log file

(not incluided due to forum limits, available upon request)

freelsjd 05-14-04 10:14 AM

Re: problem with X-4.3 + flat panels using dvi cables and nvidia graphics card
After having said all of this, I "discovered" a work-around for the problem:

Just use the analog port on the card/monitor and connecting analog cable. When you want the X-windows graphics mode, push the button on the monitor to use the dvi port. When you want the vga console mode, push the button to use the svga port.

Works fine.

However, I did not see anywhere in the docs / manuals about using both ports simultaneously on the card and the same monitor. Lot's people are using two monitors (twinview), but I have not seen this. I was concerned at first that I might somehow damage the monitor. So, I just took the chance and it works !

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