Screen Resolution

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Screen Resolution

Postby RKB on Fri Jul 10, 2009 8:33 am

Hi,
Help requested in setting up screen resolution of 1680 x 1050

Linux Mint 7 fully updated
Gigabyte 9400GT Video Card
Nvidia 180.44 from LinuxMint software suite
Downloaded:
Nvidia 180.51
Screen LCD Asus MK221
Required Screen Resolution 1680 x 1050
Max available at NVIDIA Settings: 1360 x 768

The 180.51 refuses to install as it is giving error message:
You appear to running an X server; please exit X before installing.

I don't know how to do this.

If anyone can point me in the right direction I will be grateful.

Cheers

Ron
Last edited by RKB on Fri Jul 10, 2009 6:04 pm, edited 1 time in total.
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Re: Screen Resolution

Postby lagagnon on Fri Jul 10, 2009 12:05 pm

Did you go to Menu, Control Center, Hardware, Hardware Drivers and load the correct nVidia driver first?
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Re: Screen Resolution

Postby RKB on Fri Jul 10, 2009 4:49 pm

Hi,
Yes I did, the latest driver available in Hardware Drivers is 180.44 which I have activated, but Nvidia has a newer driver 180.51 which I have downloaded but don't seem to able to install as out-lined in my previous post.

Cheers

Ron
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Re: Screen Resolution

Postby rhodry on Fri Jul 10, 2009 11:02 pm

Logically, if your X server is running, it is accessing the driver files. You can't change the driver whilst it is being used is what the message is saying.

You have to drop out of your X session by going to a tty session - usually achieved by pressing Ctl-Alt-F1, login as "superuser", perform the upgrade, become user again and restart the X session (startx).

This is not intended to be step by step - Google or search this forum for that - I'm just explaining you cannot update the driver this way from within X session.

However, I have to say, you would have to have some very specific problem that the new version fixes to justify not using the package version of the driver, which is pretty up-to-date. Leave it alone is my advice - these sorts of "outside" updates can go horribly wrong now & in future unless you know what you are doing AND have a proven need for it.

Cheers,
Rhodry.
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Re: Screen Resolution

Postby RKB on Sat Jul 11, 2009 3:42 am

Hi Thanks for reply,
I have tried all of your suggestions and still can not do the install.

We have three computers running Linux Mint V7 on big lcd screens 1680X1050 resolution.

Two have Asus AMD Motherboards with Asus Video cards. The one causing the issues is a Asus Intel Motherboard with Asus video card.

None are old they are all under 6 months old with Dual core processors and more than 4 GB of Memory.

The strange thing is that the offending machine screen resolution 1680x1050 is achievable running pcLinuxOS, SuSe 11.1 , but we prefer Linux Mint.

Actually, while typing I realised I have not tried the latest Ubuntu, which I will do and report back here.

Cheers

Ron
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Re: Screen Resolution

Postby clhodapp on Sat Jul 11, 2009 5:04 am

add this to /etc/X11/xorg.conf and hit ctrl+alt+backspace to restart xserver.
Code: Select all
Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "1680x1050 +0+0; nvidia-auto-select +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection
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Re: Screen Resolution

Postby clhodapp on Sat Jul 11, 2009 5:07 am

Or, actually it would probably be most stable to set it to a different (fixed) resolution with nvidia's settings program and then go in to the file, find the equivalent section and change the numbers. That way if there is anything special about your setup, it will be accounted for.
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Re: Screen Resolution

Postby RKB on Sun Jul 12, 2009 9:24 am

Hi Thanks for the reply,
Well I tried Ubuntu 9.01 it was worse in the available resolutions.

Then tried a few other Distro's, Centros, Fedora 9 and 11. no good

Then came back to LinuxMint, remember we have other machines with the same screen running LinuxMint and the resolution on them is fine (1680x1050), I will call this the good machine for clarity. The bad machine was running pcLinusOS fine (1680x1050)

Swapped the Video Cards between the good and bad machine, good machine still fine, bad machine still the same. Reset both screens (Asus MK221) no change.

Carried out suggested mods to xconf, no change.

One thing I have noticed the bad machine only offers up CRT-0 in the Nvidia Server Setting Menu and when I run Detect Displays, it looks but does not find.

I have now swapped screens between machines and the Bad screen stays bad regardless so it is a screen issue.

Now I have to find out why same model screen behave differently

Cheers

Ron
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