Windows Vista and KVM switch

Discussion in 'Windows Vista General Discussion' started by WGA Notifications Trojan, Jul 10, 2006.

  1. Installed MS Vista U Beta 2 x64:

    Has anyone noticed any problems with their KVM switch and Windows Vista's
    power saving mode? If I let the monitor power down, I loose the monitor and
    WGA Notifications Trojan, Jul 10, 2006
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  2. WGA Notifications Trojan

    JackM Guest

    the KVM switch does not know the time of day, let alone which OS you are
    using. They do have some video limits, but I have used two of them for years
    without troubles. As for your 'sleep' problem, if it is setup correctly the
    monitor and keyboard will power down normally. Check your bios as well as
    JackM, Jul 10, 2006
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  3. I was just mentioning the KVM swtich thing and the video power down seem to
    be related. If Vista powers down the video here while connected to the KVM,
    it won't wake up - the signal is lost - it usually not a problem with other

    Thanks for the reply, though. I'm not sure how far I want to take this
    particular investigation :)
    WGA Notifications Trojan, Jul 10, 2006
  4. WGA Notifications Trojan

    jonah Guest

    Had the same problem on mine, but did not think the KVM switch had
    anything to do with it as its just a load of wiring and a couple of
    LEDs. I assumed my "won't wake up" problem was caused by something
    related to the ancient keyboard I use on it, or if not something not
    worth worrying about. I just fixed the power options to prevent Vista
    from sleeping, problem cured.

    jonah, Jul 11, 2006
  5. WGA Notifications Trojan

    Raven Mill Guest

    I've never had a problem with my D-Link 4-port KVM, but then, I generally
    turn off all power-saving features (like "Shut off monitor after XXX
    minutes") in winblows, just because I usually don't need them.


    Takali S. Omega Sr
    Host of TechTAK on KFAR 660am
    Give a man fire and he's warm for a day.
    Set a man on fire and he's warm
    for the rest of his life.

    "WGA Notifications Trojan"
    | Installed MS Vista U Beta 2 x64:
    | Has anyone noticed any problems with their KVM switch and Windows Vista's
    | power saving mode? If I let the monitor power down, I loose the monitor
    | keyboard.
    Raven Mill, Jul 12, 2006
  6. WGA Notifications Trojan

    WineNut Guest

    I'm having this problem with Vista RTM and a Cables To Go KVM which works
    just fine with two XP machines. I tried setting sleep and power down settings
    off and still have the problem.
    WineNut, Nov 19, 2006
  7. WGA Notifications Trojan

    MarkDav Guest

    I suspect that the monitor detection is working too well. When I switch
    away, Vista behaves like I just unplugged the monitor :eek:n a laptop it
    switches to the internal screen and on a desktop it switches the display off.
    Then I suspect the system is going into powersave correctly and switches to
    the logon screen (user locked). From this mode, the system does not appear
    to be able to detect when the monitor is back (presume it needs to be in user
    mode to do that).

    You can test this by switching kvm away for a few minutes then switching
    back - the screen bumps around. switch away for longer than your powersave
    timeout and it will not come back at all. The "secret" is getting out of
    standby/sleep then being able to log on without seeing the screen to get back
    into user mode - if I do this, the screen appears after a few seconds.

    Just a guess.

    MarkDav, Dec 24, 2006
  8. WGA Notifications Trojan

    pbradshaw Guest

    I'm having this exact same problem (even on Vista32). I've turned off
    all sleeping and power management features. When I switch away, even
    for a moment, the display is just dead. Plugging the display directly
    into the PC (removing it from the KVM switch) doesn't help either. The
    display is just DEAD. The only thing I've found to do is to hit the
    power down switch. And then power back up once the computer shuts
    down. Obviously this is unacceptable.

    Has anyone found a solution at all?
    pbradshaw, Mar 24, 2007
  9. WGA Notifications Trojan

    meast Guest

    Same kind of problem here. Vista on my laptop. XP on my desktop. Both
    running through a KVM. When I switch away from the laptop and then
    switch back to it, it thinks I just attached a new monitor and it
    switches the display to the laptop LCD momentarily and then back to the
    CRT. Since the LCD is set at a lower resolution than my CRT, all my
    icons, etc get rearranged and all my windows get squished so I have to
    RESTORE and then MAXIMIZE them again to get them full screen. I just
    bought a $200 powered KVM, figuring it would solve the problem (by
    maintaining a connection to the VGA ports of all PCs regardless of
    which PC was active), but it did not.

    Does anyone have a clue as to how to get Vista to act like XP with
    regard to display detection? This is a huge P.I.T.A.!

    meast, Mar 27, 2007
  10. WGA Notifications Trojan

    JockStrap Guest

    My problem with a KVM is, XP on one,and Vista Ultimate on the other. If
    I boot the 2 computers at the same time the only one which is visible is
    the one that the KVM is switched to at the start. To get both computers
    to show, I have to boot-up pc #1, then remove the DVI cable of pc #1
    from the back of the KVM, then I boot-up pc #2. After that I reconnect
    the DVI cable of pc #1 to the back of the KVM, and all is OK.

    Most annoying
    JockStrap, Mar 27, 2008
  11. WGA Notifications Trojan

    rhjiv Guest

    using an AMCONN (4port/dual monitor) - actually works fine with m
    logitec wireless mouse/kbd - though I do seem to be pushing things wit
    a powered keyboard (saitek illuminated) or the aluminum apple. Thi
    thing us PS2 io with usb in the front. As for monitor - no problem wit
    1680x1050 res squeezed out the dvi to std vga. Win XP had to prime i
    with a ps2 kbd - the vista found it on its own. one thing and th
    reason I posted - the video start up is flawless unattended and n
    burping the dvi - graphic cards (nvidia gen 8/9) all see it fine and
    am running 4 rigs with this set u
    rhjiv, May 20, 2008
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