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#1 2020-10-28 12:46:05

Muata
Member
Registered: 2020-03-26
Posts: 7

A new monitor set to 240hz makes the screen all blue.

Hey, I bought a Samsung Odyssey G7 240hz, I have a problem with it, when I set up it to 240hz it's working but after reboot, I have a blue screen.
When I don't set up manually 240hz, the monitor working normally but on 144hz, and after change on nvidia-settings it's working well, but again after reboot, I have the same situation.

blue.jpg

xorg.conf

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 455.28

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

Section "Files"
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      "Samsung LC27G7xT"
    HorizSync       358.0 - 358.0
    VertRefresh     80.0 - 240.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 1060 6GB"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-6"
    Option         "metamodes" "2560x1440_240 +0+0"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection
 
5.9.1-zen2-1-zen
DE: Plasma 5.20.2 
GPU: NVIDIA GeForce GTX 1060 6GB
GPU Driver: NVIDIA 455.28

Last edited by Muata (2020-10-28 12:48:27)

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#2 2020-10-29 09:13:55

Muata
Member
Registered: 2020-03-26
Posts: 7

Re: A new monitor set to 240hz makes the screen all blue.

Does anyone using 240hz monitor?
Maybe it's a nvidia bug in 5.9 kernel?

Last edited by Muata (2020-10-29 09:14:14)

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#3 2020-10-30 13:10:08

clidx
Member
Registered: 2015-04-26
Posts: 21

Re: A new monitor set to 240hz makes the screen all blue.

It's not the answer you're looking for but you could set it to run at 144hz and run a script to set 240hz at startup using xrandr?

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#4 2020-10-30 13:17:03

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 21,657

Re: A new monitor set to 240hz makes the screen all blue.

What kind of cable are you using? Issues here can often be related to the cable used, can you use the same monitor/cable on another system/potential Windows dual-boot?

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#5 2020-10-31 01:30:57

Muata
Member
Registered: 2020-03-26
Posts: 7

Re: A new monitor set to 240hz makes the screen all blue.

clidx wrote:

It's not the answer you're looking for but you could set it to run at 144hz and run a script to set 240hz at startup using xrandr?

If I don't find the answer, that would be my choice.

V1del wrote:

What kind of cable are you using? Issues here can often be related to the cable used, can you use the same monitor/cable on another system/potential Windows dual-boot?

DP, and it's working on Windows.

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#6 2020-10-31 09:19:55

seth
Member
Registered: 2012-09-03
Posts: 51,001

Re: A new monitor set to 240hz makes the screen all blue.

# 2560x1440 @ 240.000 Hz Reduced Blank (CVT) field rate 240.000 Hz; hsync: 388.560 kHz; pclk: 1025.80 MHz
Modeline "2560x1440_240.00_rb2"  1025.80  2560 2568 2600 2640  1440 1605 1613 1619 +hsync -vsync

Unreduced 2560x1440@144 is 808.75 MHz, unreduced 2560x1440@240 is 1442.50 MHz and you still get some signal, so the above modeline might very well work.

https://wiki.archlinux.org/index.php/Xr … esolutions

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#7 2020-11-02 09:24:33

Muata
Member
Registered: 2020-03-26
Posts: 7

Re: A new monitor set to 240hz makes the screen all blue.

I'm doing something wrong or it doesn't work?
I've tried with monitor-10.conf and xorg.conf, tried also manual set up but I have an error:

cvt -r 2560 1440 240
# 2560x1440 239.91 Hz (CVT) hsync: 388.42 kHz; pclk: 1056.50 MHz
Modeline "2560x1440R"  1056.50  2560 2608 2640 2720  1440 1443 1448 1619 +hsync -vsync
xrandr --newmode "2560x1440R"  1056.50  2560 2608 2640 2720  1440 1443 1448 1619 +hsync -vsync
xrandr --addmode DP-4 2560x1440R
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  18 (RRAddOutputMode)
  Serial number of failed request:  43
  Current serial number in output stream:  44

xorg.conf:

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 455.28

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

Section "Files"
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      "Samsung LC27G7xT"
        HorizSync       358.0 - 358.0
        VertRefresh     80.0 - 240.0
        Modeline "2560x1440R"  1056.50  2560 2608 2640 2720  1440 1443 1448 1619 +hsync -vsync
        Option         "DPMS"
EndSection

Section "Device"
        Identifier     "Device0"
        Driver         "nvidia"
        VendorName     "NVIDIA Corporation"
        BoardName      "GeForce GTX 1060 6GB"
EndSection

Section "Screen"
        Identifier     "Screen0"
        Device         "Device0"
        Monitor        "Monitor0"
        DefaultDepth    24
        Option         "Stereo" "0"
        Option         "nvidiaXineramaInfoOrder" "DFP-6"
        Option         "SLI" "Off"
        Option         "MultiGPU" "Off"
        Option         "BaseMosaic" "off"
        SubSection     "Display"
                Depth       24
                Modes   "2560x1440R"
        EndSubSection
EndSection

Last edited by Muata (2020-11-02 09:27:57)

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#8 2020-11-02 09:59:05

seth
Member
Registered: 2012-09-03
Posts: 51,001

Re: A new monitor set to 240hz makes the screen all blue.

Lose the xorg.conf (and 10-monitor.conf), restart X and try the modeline I posted (you can generate them w/ cvt12 -b)
Also post the output of "xrandr -q"

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