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#1 2008-04-18 04:12:42

NegativeFPS
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From: 192.168.0.1
Registered: 2008-04-14
Posts: 37
Website

Can't get proper refresh rate going

Worked on this for the past... oh 3 hours or so with no success.

My monitor is a new Samsung flatpanel that had 75 Hz in windows, under Gnome it's only giving me 59.

I have the nvidia drivers installed right, I know that.


nvidia-settings -q RefreshRate

  Attribute 'RefreshRate' (negativefps:0.0; display device: DFP-0): 59.89 Hz.
    'RefreshRate' is an integer attribute.
    'RefreshRate' is a read-only attribute.
    'RefreshRate' is display device specific.
    'RefreshRate' can use the following target types: X Screen, GPU.

Here is my xorg.conf:

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 1.0  (buildmeister@builder3)  Thu Feb 14 18:20:37 PST 2008


Section "ServerLayout"
    Identifier     "X.org Configured"
    Screen      0  "Screen0" 0 0
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
    RgbPath         "/usr/share/X11/rgb"
    ModulePath      "/usr/lib/xorg/modules"
    FontPath        "/usr/share/fonts/misc"
    FontPath        "/usr/share/fonts/100dpi:unscaled"
    FontPath        "/usr/share/fonts/75dpi:unscaled"
    FontPath        "/usr/share/fonts/TTF"
    FontPath        "/usr/share/fonts/Type1"
EndSection

Section "Module"
    Load           "ddc"
    Load           "glx"
    Load           "extmod"
    Load           "xtrap"
    Load           "record"
    Load           "dbe"
    Load           "freetype"
EndSection

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/input/mice"
    Option         "ZAxisMapping" "4 5 6 7"
EndSection

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

Section "Device"
    Identifier     "Card0"
    Driver         "nvidia"
    VendorName     "nVidia Corporation"
    BoardName      "Unknown Board"
    Option         "UseEdidDpi" "false"
    Option         "DPI" "96 x 96"
    Option         "RenderAccel" "True"
    Option         "DamageEvents" "True"
    Option         "AllowGLXWithComposite" "True"
    Option         "AddARGBGLXVisuals" "True"
    Option         "TripleBuffer" "True"
    Option         "BackingStore" "True"
    Option         "ConnectedMonitor" "DFP"
    Option         "NoLogo" "True"
    Option         "AllowDDCCI" "True"
    Option         "UseEdidFreqs" "True"
    Option         "UseEDID" "True"
    Option          "UseDidFreqs" "True"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Card0"
    Monitor        "Monitor0"
    SubSection     "Display"
        Viewport    0 0
        Depth       24
        Modes      "1440x900"
    EndSubSection
EndSection

Section "Extensions"
    Option         "Composite" "Enable"
EndSection

The removal of the edid options and others don't make a difference. It was stuck at 59 from the very beginning when I installed AL just today. I gradually added options and none helped.

How can I truely enable edid? It just doesn't seem to want to utilize it no matter what.

Last edited by NegativeFPS (2008-04-18 04:14:04)

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#2 2008-04-18 11:23:05

Captain Spaulding
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Registered: 2006-11-16
Posts: 115
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Re: Can't get proper refresh rate going

Forget about EDID and add this line to your "Monitor" section:

VertRefresh 60.0-75.0

Xorg will now try to run your Monitor at 75Hz, unless the nvidia driver can't do so (which I doubt).

BTW, LCDs are comfortable at 60Hz and 75Hz and the human eye usually will not notice a difference. Your 59Hz is probably a rounding error, for if it weren't the LCD would display nothing. So this is actually a vanity project wink

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#3 2008-04-18 22:55:01

NegativeFPS
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From: 192.168.0.1
Registered: 2008-04-14
Posts: 37
Website

Re: Can't get proper refresh rate going

Captain Spaulding wrote:

Forget about EDID and add this line to your "Monitor" section:

VertRefresh 60.0-75.0

Xorg will now try to run your Monitor at 75Hz, unless the nvidia driver can't do so (which I doubt).

BTW, LCDs are comfortable at 60Hz and 75Hz and the human eye usually will not notice a difference. Your 59Hz is probably a rounding error, for if it weren't the LCD would display nothing. So this is actually a vanity project wink

I actually added this last night before I went to bed. Again, no change (I only specified 75, not 60-75). I notice a big difference between 60 and 75. It hurts my eyes a lot more at the current refresh rate, while it was smooth with 75 on Windows

Current xorg.conf

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 1.0  (buildmeister@builder3)  Thu Feb 14 18:20:37 PST 2008


Section "ServerLayout"
    Identifier     "X.org Configured"
    Screen      0  "Screen0" 0 0
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
    RgbPath         "/usr/share/X11/rgb"
    ModulePath      "/usr/lib/xorg/modules"
    FontPath        "/usr/share/fonts/misc"
    FontPath        "/usr/share/fonts/100dpi:unscaled"
    FontPath        "/usr/share/fonts/75dpi:unscaled"
    FontPath        "/usr/share/fonts/TTF"
    FontPath        "/usr/share/fonts/Type1"
EndSection

Section "Module"
    Load           "glx"
    Load           "extmod"
    Load           "xtrap"
    Load           "record"
    Load           "dbe"
    Load           "freetype"
EndSection

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/input/mice"
    Option         "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Monitor Vendor"
    ModelName      "Monitor Model"
    HorizSync       30.0 - 81.0
    VertRefresh     75.0
EndSection

Section "Device"
    Identifier     "Card0"
    Driver         "nvidia"
    VendorName     "nVidia Corporation"
    BoardName      "Unknown Board"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Card0"
    Monitor        "Monitor0"
    Option         "UseEdidDpi" "false"
    Option         "DPI" "96 x 96"
    Option         "RenderAccel" "True"
    Option         "DamageEvents" "True"
    Option         "AllowGLXWithComposite" "True"
    Option         "AddARGBGLXVisuals" "True"
    Option         "TripleBuffer" "True"
    Option         "BackingStore" "True"
    Option         "ConnectedMonitor" "DFP"
    Option         "NoLogo" "True"
    Option         "TwinView" "False"
    SubSection     "Display"
        Viewport    0 0
        Modes      "1440x900"
    EndSubSection
EndSection

Section "Extensions"
    Option         "Composite" "Enable"
EndSection

Last edited by NegativeFPS (2008-04-18 22:55:32)

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#4 2008-04-19 09:31:45

berbae
Member
From: France
Registered: 2007-02-12
Posts: 1,302

Re: Can't get proper refresh rate going

NegativeFPS wrote:

I notice a big difference between 60 and 75. It hurts my eyes a lot more at the current refresh rate, while it was smooth with 75 on Windows

I agree with you about that, I also see a big difference between the 60 and 75 Hz refresh rate of my screen. It is highly more comfortable for the eyes at the 75 Hz nominal rate.
Now some suggestions you could try to get that refresh rate :

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Monitor Vendor"
    ModelName      "Monitor Model"
    HorizSync       30.0 - 81.0
    #VertRefresh     75.0
    VertRefresh     60.0- 76.0
EndSection

Section "Device"
    Identifier     "Card0"
    Driver         "nvidia"
    VendorName     "nVidia Corporation"
    BoardName      "Unknown Board"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Card0"
    Monitor        "Monitor0"
    Option         "UseEdidFreqs" "false"
    Option         "UseEdidDpi" "false"
    Option         "DPI" "96 x 96"
    Option         "RenderAccel" "True"
    Option         "DamageEvents" "True"
    Option         "AllowGLXWithComposite" "True"
    Option         "AddARGBGLXVisuals" "True"
    Option         "TripleBuffer" "True"
    Option         "BackingStore" "True"
    Option         "ConnectedMonitor" "DFP"
    Option         "NoLogo" "True"
    Option         "TwinView" "False"
    DefaultDepth 24
    SubSection     "Display"
        Viewport    0 0
        Depth     24
        Modes      "1440x900"
    EndSubSection
EndSection

Section "Extensions"
    Option         "Composite" "Enable"
EndSection

For my screen I have to give the 76 Hz value for the vertical refresh rate, because it is a little higher than 75 Hz.

Last edited by berbae (2008-04-19 09:34:26)

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#5 2008-04-19 17:27:53

NegativeFPS
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From: 192.168.0.1
Registered: 2008-04-14
Posts: 37
Website

Re: Can't get proper refresh rate going

No change =/

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#6 2008-04-19 22:23:25

NegativeFPS
Member
From: 192.168.0.1
Registered: 2008-04-14
Posts: 37
Website

Re: Can't get proper refresh rate going

New xorg.conf:

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 1.0  (buildmeister@builder3)  Thu Feb 14 18:20:37 PST 2008

Section "ServerLayout"
    Identifier     "X.org Configured"
    Screen      0  "Screen0" 0 0
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
    RgbPath         "/usr/share/X11/rgb"
    ModulePath      "/usr/lib/xorg/modules"
    FontPath        "/usr/share/fonts/misc"
    FontPath        "/usr/share/fonts/100dpi:unscaled"
    FontPath        "/usr/share/fonts/75dpi:unscaled"
    FontPath        "/usr/share/fonts/TTF"
    FontPath        "/usr/share/fonts/Type1"
EndSection

Section "Module"
    Load           "glx"
    Load           "extmod"
    Load           "xtrap"
    Load           "record"
    Load           "dbe"
    Load           "freetype"
EndSection

Section "ServerFlags"
    Option         "Xinerama" "0"
EndSection

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/input/mice"
    Option         "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Samsung SyncMaster"
    HorizSync       30.0 - 81.0
    VertRefresh     56.0 - 75.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8800 GT"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Videocard0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "DPI" "96 x 96"
    Option         "DamageEvents" "True"
    Option         "NvAGP" "0"
    Option         "NoLogo" "True"
    Option         "metamodes" "1440x900_75 +0+0; 1440x900 +0+0"
    Option         "DynamicTwinView" "False"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Extensions"
    Option         "Composite" "Enable"
EndSection

still 59hz.. grr

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#7 2009-05-20 01:37:46

pharcyde
Member
From: Connecticut
Registered: 2009-03-13
Posts: 88

Re: Can't get proper refresh rate going

I know this is an old thread but I'm having this same issue. Anyone find a fix yet? Refresh is stuck at 59.89. I'm sure its the reason I've had headaches the past couple of days. hmm

Last edited by pharcyde (2009-05-20 01:38:27)

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