Solved [SOLVED] Resolution and VertRefresh

B

bsd5543

Hi all,

I have bought a new 27" display and I have issues to set the correct vertical refresh rate. The correct max resolution of 2560x1440 is detected correctly but the VertRefresh rate is not set properly. It is set to 60 Hz instead of 30 Hz. I cannot adjust it using the Gnome2 app for screen resolution.

Could anybody help me to set the correct paramenters in /etc/X11/xorg.conf?

Attached extracts from /etc/X11/xorg.conf and /var/log/Xorg.0.log:

Code: 
Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "Monitor Model"
EndSection

Section "Device"
        Identifier  "Card0"
        Driver      "nvidia"
        VendorName  "NVIDIA Corporation"
        BoardName   "G92 [GeForce 8800 GTS 512]"
        BusID       "PCI:1:0:0"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Card0"
        Monitor    "Monitor0"
        SubSection "Display"
                Viewport   0 0
                Depth     1
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     4
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     8
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     15
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     16
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     24
        EndSubSection
EndSection

Code: 
(**) Mar 25 16:52:28 NVIDIA(0): Enabling 2D acceleration
(II) Mar 25 16:52:29 NVIDIA(0): NVIDIA GPU GeForce 8800 GTS 512 (G92) at PCI:1:0:0 (GPU-0)
(--) Mar 25 16:52:29 NVIDIA(0): Memory: 524288 kBytes
(--) Mar 25 16:52:29 NVIDIA(0): VideoBIOS: 62.92.16.00.40
(II) Mar 25 16:52:29 NVIDIA(0): Detected PCI Express Link width: 16X
(--) Mar 25 16:52:29 NVIDIA(0): Valid display device(s) on GeForce 8800 GTS 512 at PCI:1:0:0
(--) Mar 25 16:52:29 NVIDIA(0):     CRT-0
(--) Mar 25 16:52:29 NVIDIA(0):     CRT-1
(--) Mar 25 16:52:29 NVIDIA(0):     TV-0
(--) Mar 25 16:52:29 NVIDIA(0):     Eizo EV2736W (DFP-0) (boot, connected)
(--) Mar 25 16:52:29 NVIDIA(0):     DFP-1
(--) Mar 25 16:52:29 NVIDIA(0): CRT-0: 400.0 MHz maximum pixel clock
(--) Mar 25 16:52:29 NVIDIA(0): CRT-1: 400.0 MHz maximum pixel clock
(--) Mar 25 16:52:29 NVIDIA(0): TV-0: 400.0 MHz maximum pixel clock
(--) Mar 25 16:52:29 NVIDIA(0): Eizo EV2736W (DFP-0): Internal Dual Link TMDS
(--) Mar 25 16:52:29 NVIDIA(0): Eizo EV2736W (DFP-0): 330.0 MHz maximum pixel clock
(--) Mar 25 16:52:29 NVIDIA(0): DFP-1: Internal Single Link TMDS
(--) Mar 25 16:52:29 NVIDIA(0): DFP-1: 330.0 MHz maximum pixel clock
(**) Mar 25 16:52:29 NVIDIA(0): Using HorizSync/VertRefresh ranges from the EDID for display
(**) Mar 25 16:52:29 NVIDIA(0):     device Eizo EV2736W (DFP-0) (Using EDID frequencies has
(**) Mar 25 16:52:29 NVIDIA(0):     been enabled on all display devices.)
(WW) Mar 25 16:52:29 NVIDIA(GPU-0): The EDID for Eizo EV2736W (DFP-0) contradicts itself: mode
(WW) Mar 25 16:52:29 NVIDIA(GPU-0):     "2560x1440" is specified in the EDID; however, the EDID's
(WW) Mar 25 16:52:29 NVIDIA(GPU-0):     valid VertRefresh range (59.000-61.000 Hz) would exclude
(WW) Mar 25 16:52:29 NVIDIA(GPU-0):     this mode's VertRefresh (29.9 Hz); ignoring VertRefresh
(WW) Mar 25 16:52:29 NVIDIA(GPU-0):     check for mode "2560x1440".
(==) Mar 25 16:52:29 NVIDIA(0):
(==) Mar 25 16:52:29 NVIDIA(0): No modes were requested; the default mode "nvidia-auto-select"
(==) Mar 25 16:52:29 NVIDIA(0):     will be used as the requested mode.
 
Re: Resolution and VertRefresh

You could try setting the VertRefresh by hand in the Monitor section. Apparently EDID doesn't get the correct frequencies.

Code: 
Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "Monitor Model"
        VertRefresh 29-61
EndSection
 
Re: Resolution and VertRefresh

Added the VertRefresh line to xorg.conf. Refresh rate is still on 60 Hz.
 
Re: Resolution and VertRefresh

I found a solution after doing some research on the internet: http://forum.xbmc.org/showthread.php?tid=70068

Just added following line to the screen section in /etc/X11/xorg.conf: Modes "2560x1440_30"
Code: 
Section "Screen"
    Identifier     "Screen0"
    Device         "Card0"
    Monitor        "Monitor0"
    SubSection     "Display"
        Viewport    0 0
        Depth       24
        Modes      "2560x1440_30"
    EndSubSection
EndSection
 
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