• External HDMI Issue - Cyles ON and OFF


    Laptop: Lenovo Y510P, Dual Nvidia 755M 2GB, 16G RAM, Core i7 based.

    Monitor: ASUS 24 inch Model VS248H-P ([url:192hnug4]http://www.asus.com/us/Monitors_Projectors/VS248HP/[/url:192hnug4]).

    Using NVIDIA drivers: 334.21

    Running KDE. When I connect the monitor to the HDMI port, I immediately get a popup about a mew monitor detected and if I would like to try to automatially configure it. Before even answering the question the monitor is on and I get the mirrored screen - image looks good. nice and crisp. But within a few seconds, starts to cycle ON and OFF.

    It auto detects the following:

    HDMI-0 (Connected).
    Size: 1920x1080 (Auto)
    Refresh (Auto)
    Orientation: No Rotation
    Position: Absolute 0 0

    I set DP-0 (connected) [Laptop Screen] to be position Left of HDMI-0.

    Primary output: DP-0

    Apply settings.

    Then HDMI-0 screen keeps turning ON and OFF. Appears to be random, but also appear to be ON less and OFF more each time but not always. It appears to be video signal / sync issue. The LED light on the front of the monitor is not turning ON and OFF. When it comes back on it show the “HDMI Video” overlay logo the monitor adds to show which connector is used. This is a 76hz monitor, but the drop down doesn’t let me pick anything higher than 60. I tried several different refresh options from the drop down, they all seem to do the same.

    If I pick a selection lower than 1920x1080 such as 1600x1200 - the screen stays ON. But obviosuly I want it to work at full 1080P mode. I also see what can best be described as green static in a few locations around images such as around letters in images where you get pixelation. When I drag the window around, even slowly the green static goes away. Comes back when I release the mouse button. When I switch back to 1920x1080 there is no green static, but it goes back to cycling.

    I’ve never had a problem connecting HDMI monitor before, so not sure what information would be useful here. I don’t see anything obvious with DMESG.

    I can use the monitor at 1080p with two other laptops. One running Antergos / cinnamon and the other running Windows 7.

  • Laptop: Lenovo Y510P, Dual Nvidia 755M 2GB, 16G RAM, Core i7 based.

    Monitor: ASUS 24 inch Model VS248H-P ([url:192hnug4]http://www.asus.com/us/Monitors_Projectors/VS248HP/[/url:192hnug4]).

    Using NVIDIA drivers: 334.21

    Running KDE. When I connect the monitor to the HDMI port, I immediately get a popup about a mew monitor detected and if I would like to try to automatially configure it. Before even answering the question the monitor is on and I get the mirrored screen - image looks good. nice and crisp. But within a few seconds, starts to cycle ON and OFF.

    It auto detects the following:

    HDMI-0 (Connected).
    Size: 1920x1080 (Auto)
    Refresh (Auto)
    Orientation: No Rotation
    Position: Absolute 0 0

    I set DP-0 (connected) [Laptop Screen] to be position Left of HDMI-0.

    Primary output: DP-0

    Apply settings.

    Then HDMI-0 screen keeps turning ON and OFF. Appears to be random, but also appear to be ON less and OFF more each time but not always. It appears to be video signal / sync issue. The LED light on the front of the monitor is not turning ON and OFF. When it comes back on it show the “HDMI Video” overlay logo the monitor adds to show which connector is used. This is a 76hz monitor, but the drop down doesn’t let me pick anything higher than 60. I tried several different refresh options from the drop down, they all seem to do the same.

    If I pick a selection lower than 1920x1080 such as 1600x1200 - the screen stays ON. But obviosuly I want it to work at full 1080P mode. I also see what can best be described as green static in a few locations around images such as around letters in images where you get pixelation. When I drag the window around, even slowly the green static goes away. Comes back when I release the mouse button. When I switch back to 1920x1080 there is no green static, but it goes back to cycling.

    I’ve never had a problem connecting HDMI monitor before, so not sure what information would be useful here. I don’t see anything obvious with DMESG.

    I can use the monitor at 1080p with two other laptops. One running Antergos / cinnamon and the other running Windows 7.

  • I just tried to configure using the NVIDIA Settings control panel. It stills cycles ON and OFF but much slower. Stays on for 30 seconds or so to a minute+ before turns OFF then back ON. No green static. Better but still not right.

    NVIDIA detects it as:

    Ancor Communications Inc VS248 (DFP-0 on GPU-0)
    Configuration: X screen 0
    Resolution: 1920x1080 Auto
    Orientation: No rotation No reflection
    Underscan 0
    Position: Absolute +1920+0

  • [[email protected] ~]$ xrandr -q  
    Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 16384 x 16384  
    VGA-0 disconnected (normal left inverted right x axis y axis)  
    HDMI-0 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 530mm x 300mm  
    1920x1080 60.00\*+ 59.99 59.94 50.00 60.05 60.00 50.04   
    1680x1050 59.95   
    1600x1200 60.00   
    1440x900 59.89   
    1366x768 59.79   
    1280x1024 75.02 60.02   
    1280x960 60.00   
    1280x720 60.00 59.94 50.00   
    1152x864 75.00   
    1024x768 75.03 70.07 60.00   
    800x600 75.00 72.19 60.32 56.25   
    720x576 50.00   
    720x480 59.94   
    640x480 75.00 72.81 59.94 59.93   
    DP-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 345mm x 194mm  
    1920x1080 59.91\*+  
    
    
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