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Thread: KVM switch causes system to suspend

  1. #1

    Unhappy KVM switch causes system to suspend

    Let's start with an explanation of my set up and what I have already tried.
    I have a Dell E6520, business type laptop, plugged into a Dell E-Series dock. The dock provides power, network, USB connections, and DVI and VGA outputs. The laptop lid is constantly closed. I have a KVM, a cheap IOGear using USB and VGA, plugged into this system which is used to switch between two other computer as well.
    Whenever I use the KVM to switch from my laptop to another system, doesn't matter which, the laptop will go into standby(aka sleep, RAM sleep, ACPI state S1|S2|S3) mode. This would not be so much of an issue if I wanted it to happen but I want the laptop to stay on in order to share files. Also when it comes back KDE will crash 90% of the time.
    I have tried using Power Management under Desktop Settings to set all button handling, including the lid switch, to Do Nothing. I tried disabling the Suspend timer as well. I even tried disabling Power Management in KDE altogether. I also looked in YaST over and over for power management settings and found nothing.

    What did I miss? Better yet what can I change?
    This is a true annoyance for me.
    At this point I am shutting down the laptop before I change over to another computer. It is fast to boot up but still annoying, especially since I can't access my files from the other systems when I need to.

  2. #2
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    Default Re: KVM switch causes system to suspend

    If I were to guess,
    It's an APCI setting somewhere.

    But,
    When I've been in your situation, I simply avoid the problem by implementing a "Software KVM" by using a remote desktop app instead of a physical KVM.
    That way no machines are physically switched and all machines are always fully running and available (Keyboard, Video, Mouse).

    The KVM itself then becomes only used in emergencies.

    TSU
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  3. #3

    Default Re: KVM switch causes system to suspend

    I kind of figured that its and ACPI setting somewhere, but where?

    As for the "software" KVM I would do it but my gaming PC would have to be up front with my SuSE laptop being remoted into. And of course it won't stay on once the KVM is switched to another computer.

  4. #4
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    Default Re: KVM switch causes system to suspend

    ACPI settings can be hidden, start in the BIOS, then look for settings in the OS, and then in the Desktop.

    You can also look into configuring your regular, non-gaming machine as headless, accessible only remotely.

    TSU
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