Screen resolution not available 3840x1024

Briggzee · 01-28-2008, 07:06 PM

Hi all

I have just finished installing Zenwalk 5.0 Standard Edition, and it appears to have all installed with no issues.

However, the default resolution is 1280 x 1024 and I would like the resolution changed to 3840 x 1024 so it will span across my three monitors.

I am using a single graphics card (Nvidia 8800GT) and a Matrox Triplehead2Go to allow the three monitors be connected to one graphics card and share the video output.

At first I thought to use the Display manager within XFCE but there was only a "default" option, which it was currently set to.

Instead I manually edited /etc/X11/xorg.conf
And under the 'Screen' section added my desired resoltion; "3840x1024"
Restarted the computer, and nothing has changed. Still 1280x1024 resolution

Any assistance would be appreciated.

Simon Bridge · 01-28-2008, 07:25 PM

Quote:

However, the default resolution is 1280 x 1024 and I would like the resolution changed to 3840 x 1024 so it will span across my three monitors. Matrox Triplehead2Go

Yike!

You need to realise that the bigger desktop will not make your display work in triple-head. You need to configure it in xorg.conf

You can probably configure xorg triple-head ntis way, but I suspect you'll need the matrox/linux drivers. Matrox makes these available via the user-to-user Matrox Tech Support Forum. Or you can try: http://www.opendrivers.com/company/2...-download.html

I have no idea if matrox has big desktop support for linux, but you could try Xinerama or MergedFB.

From googling your card with linux, best advise is to sell the card to a MS drone and get one from a company with linux support.

guth · 01-29-2008, 03:42 PM

To setup my double head system, i had to :
- define a monitor for eachone of my monitors
- add a "virtual" line in display sub sections
- use xrandr (instead of the "old" system) (ex: xrandr --output VGA-0 --auto --left-of LVDS)

my xorg.conf : http://zen-repo.meticul.eu/zen_stuffs/guth/xorg.conf

about the 3000+ 1200+ problem:
be sure to select "default" in xfce display config

Simon Bridge · 01-29-2008, 10:42 PM

Your xorg.conf suggests you have a dual-head card:
PCI: 1:0:0 RV350 [Mobility Radeon 9600 M10]
... well supported by free drivers.

What about OPs Matrox card?

Your xorg.conf is a tad confusing - for eg. you have two cards defined (needed for dual head) but one is commented out. In fact, most of the config for dual head is commented - well... most of the config is commented out period. You've been having fun haven't you?

But the suggestion to use Xinerama and set a large virtual screensize is the correct one for this case.

In your case, you could look into MergedFB, especially as you are using the free drivers (which support it). Xinerama assigns each screen it's own framebuffer which can limit 3D acceleration, and you need seperate screen, device and monitor sections.

All you need is an extra bit in the device section:

Code:

Option "MergedFB" "on"
Option "MetaModes" 1400x1050-1400x1050
Option "CRT2HSync" "75"
Option "CRT2VRefresh" "60"
Option "CRT2Position" "RightOf"

The screen section needs to be set up so that the normal resolution is that of the primary monitor and virtual resolution is that for both combined...

Code:

Section "Screen"
    Identifier  "Videoconfig0"
    Device      "Videocard1-0"
    Monitor     "Monitor0"
    DefaultDepth 24
    Subsection "Display"
        Depth       24
    	Virtual 2680 1050
        Modes "1400x1050" "1280x1024" "1024x768" "800x600" "640x480"
    EndSubsection
EndSection

Which I see you already have.

I notice you had config (commented) there for ATI BigDesktop.
Do the free drivers support this? I thought you needed fglrx and fglrxconfig to set it up?

guth · 01-30-2008, 03:20 PM

Only default xorg driver and xrandr

seecoolguy · 02-07-2008, 09:28 PM

Maybe you can help me out with my problem here on my xorg.conf, I am not sure why I can't get the th2g (tripleHead2Go) device to work correctly.

Code:

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 1.0  (buildmeister@builder3)  Wed Sep 12 14:30:30 PDT 2007


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

Section "Files"
    RgbPath         "/usr/X11R6/lib/X11/rgb"
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      "Matrox"
    HorizSync       31.5 - 80.0
    VertRefresh     60.0 - 75.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "Quadro FX 350M"
EndSection

Section "Screen"

# Removed Option "metamodes" "DFP-1: 3840x1024 +0+0; DFP-1: 3840x1024_75 +0+0"
    Identifier     "Screen0"
    Device         "Videocard0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "DFP-1: 1280x1024 +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Simon Bridge · 02-08-2008, 03:59 AM

I have ad zero experience of TH2G devices - which split a single SVGA or DVI output across three monitors. My instinct is that you must have a graphics card that supports an arbitrarily wide resolution. Then it is the same setup as a single screen... though you may need to adjust driver options to allow more memory.

Presumably, if you use a lower resolution, it will still fill the screens like normal.

Note: in linux, software triple-head is possible.But you need three video-outs.

Briggzee · 02-11-2008, 06:01 PM

I finally got it fixed.

Thanks for the replies and advice everyone.

The problem was I didnt have the nvidia driver installed.

These are the steps I went through, however some of these steps may not have been neccessary.

After a fresh install of Zenwalk 5.0

1. Switched to textmode console. (Ctrl-Alt-F2)
2. Logged in as root
3. Ran 'init 3'
4. Ran 'netpkg upgrade'
5. Ran 'netpkg kernelsource'
6. Restarted computer
7. Switched to textmode console again. (Ctrl-Alt-F2)
8. Logged in as root
9. Ran 'init 3'
10. Ran 'netpkg nvidia' (I skipped the first two options, and installed the latest one only. nvidia-glx-new-169.07.1-i486-2.6.23.12.tgz)
11. Restarted. Accepted the Nvidia License.
12. Switched to textmode console. (Ctrl-Alt-F2)
13. Logged in as root
14. Ran 'init 3'
15. Ran 'mv /etc/X11/xorg.conf /etc/X11/xorg.conf_backup'
16. Ran 'nvidia-xconfig'
17. Ran 'vim /etc/X11/xorg.conf' and added in my refresh rates. Saved file.
18. Ran 'init 4'

After that the login prompt automatically went to 3840x1024 resolution.

Here is a copy of my working xorg file.

Code:

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 1.0  (buildmeister@builder3)  Thu Dec 13 19:09:35 PST 2007

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

Section "Files"
    RgbPath         "/usr/lib/X11/rgb"
    FontPath        "/usr/lib/X11/fonts/misc/:unscaled"
    FontPath        "/usr/lib/X11/fonts/misc/"
    FontPath        "/usr/lib/X11/fonts/Type1/"
EndSection

Section "Module"
    Load           "dbe"
    Load           "extmod"
    Load           "type1"
    Load           "freetype"
    Load           "glx"
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"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    HorizSync       30.0 - 82.0
    VertRefresh     50.0 - 75.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

guth · 02-12-2008, 01:37 PM

nice to read

juste a "question", did you try without installing kernelsource ? because most drivers that "require" sources have enough infos with only kernelheaders

Briggzee · 02-12-2008, 11:51 PM

No, I didnt try without the kernelsource.

I borrowed some of the steps from the Installing NVIDIA article from the Zenwalk Wiki
http://wiki.zenwalk.org/index.php?ti...r_Installation

Now that I have my desired desktop resolution, I have found that I am experiencing issues running (what I assume are) OpenGL applications.

I installed Urban Terror (a game based on the Quake 3 engine) and when I ran it, my screen(s) went black and I got "Out of Range" displayed on the centre monitor. Restarting X was the only way to reclaim my desktop (Ctrl-Alt-Backspace). At first I assumed this was because I hadnt installed or configured Urban Terror properly.

Then I installed Tux Racer and tried that. Same problem as Urban Terror.

Can anyone suggest where I might start to begin resolving this problem?

Simon Bridge · 02-13-2008, 04:45 AM

Quote:

I got "Out of Range" displayed on the centre monitor.

Error is generated by hardware - either the th2g or the monitor.