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    • [Hardware] DisplayPort and monitor energy saving
    Product Feedback 531 views · 4 replies ·
    Tofloor
    poster avatar
    yarecco
    deepin
    2022-04-07 06:14
    Author

    Actually I noticed this is not an issue concerning only Deepin distro but maybe somebody here could find some reason and workaround.

    I noticed that when I have my monitor connected with Display Port and my screen is set to turn off after some defined time the system freezes when I try to wake up the monitor and all I can do is hard system restart.

    It does not happen on HDMI connection.

    System: AMD Ryzen 3 5300G with AMD Graphics

    DisplayPort 1.4

    HDMI 2.0

    Scrren 32" 2560x1440 165Hz

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    Mr-Wan
    deepin
    2022-04-07 11:10
    #1

    sudo dmesg | grep -i acpi | grep -i supports
    [ 0.341734] ACPI: (supports S0 S3 S4 S5)

    If system acpi S3 is supported,maybe the problem is about the driver of video card.

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    yarecco
    deepin
    2022-04-08 02:12
    #2
    Mr-Wan：

    sudo dmesg | grep -i acpi | grep -i supports
    [ 0.341734] ACPI: (supports S0 S3 S4 S5)

    If system acpi S3 is supported,maybe the problem is about the driver of video card.

    [ 0.201543] ACPI: PM: (supports S0 S3 S4 S5)
    [ 0.207398] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI HPX-Type3]

    It seems S3 is supported.

    So the problem may be in the video graphic card driver then.

    I tried with different kernels and some other distro s as ubuntu or KDE Neon and the problem persists.

    So probably it is about the AMD Ryzen integrated graphics driver...

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    uvz
    deepin
    2022-04-08 03:28
    #3

    could u try to turn down the flash rate of your screen to 60Hz. Maybe the driver can not cover this high frame rate.

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    yarecco
    deepin
    2022-04-08 04:46
    #4
    uvz：

    could u try to turn down the flash rate of your screen to 60Hz. Maybe the driver can not cover this high frame rate.

    It doesn't change anything.

    The screen doesn't wake up and the system freezes when you move the mouse or press the keyboard to wake the monitor and only with Display Port connection.

    The sleep mode works fine... I can wake the computer without any issues.

    The porblem is only when I set the screen to be off after some time.

    I guess it is something with amdgpu driver in kernel. It is quite new processor Ryzen 3 5300G. with Vega 6 integrated graphics...

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