Using KVM causes MacPro's display output to go black for a few seconds

I have a Mac Pro plugged into a IOgear 2 port DVI KVM. The Mac Pro's other DVI output is plugged in, via VGA, to a second monitor that is not switched.
Whenever I switch to my Mac Pro, both displays go black for 2-4 seconds and then come back. This is not the most critical problem I have ever had, but since I rely on my KVM to quickly switch between computers, it is really annoying.
Anyone have a fix?
Message was edited by: captain_awesome

I had a similar problem with an IOGEAR kvm recently. I have the IOGEAR 2 port DVI/USB kvm (model GCS932U), which I am using to connect my MacPro and a linux box to share a monitor and keyboard.
I was running into the problem that if I had the primary monitor connect to the KVM and switched back and forth, the MacPro would actually hang and be unresponsive. After contacting IOGEAR they verified that this was an known issue with Mac's. BTW - the IOGEAR tech support was very good.
Fortunately I have a dual display setup and simply connected the secondary monitor to the MacPro via the kvm while the primary monitor was, well, the primary monitor on the Mac. Problem solved.
This is a little tangential to the current discussion, but perhaps someone may run into a similar problem at some point.
Cheers

Similar Messages

  • Late 2012 Mac Mini display goes to black for a few seconds at random intervals

    I have a late 2012 Mac Mini, Ivy Bridge, connected to a 24" Samsung LCD dsplay,using the HDMI to DVI video cable that came with the Mac Mini.  At random times when I am doing something or browsing the web, the screen will go totally black and then revert to the proper display.  This Mac Mini is connected to a 2 port KVM, however I never see this behavior when the KVM is switched over to the PC.  Has anyone else seen this behavior?

    Welcome to the family. Search this forum for the main thread for this problem titled: "mac mini 2012 video blinking out".

  • HT1325 Just brought the MacPro and first time using iTune and Yes I authorized the computer. But for a few purchased songs, only 30 seconds of the song plays and for one song off an album, a pop comes up saying I need to authorized the computer, but it is

    Just brought the MacPro and first time using iTune and Yes I authorized the computer. But for a few purchased songs, only 30 seconds of the song plays and for one song off an album, a pop comes up saying I need to authorized the computer, but I do this and it says it is authorized already. I click on the song to play it and this process repeat (saying it is not authorized, then saying it is already authorized)

    If your country's iTunes Store allows you to redownload purchased tracks, I'd delete your current copies of the dodgy tracks and try redownloading fresh copies. For instructions, see the following document:
    Downloading past purchases from the App Store, iBookstore, and iTunes Store
    Otherwise, I'd report the problem to the iTunes Store.
    Log in to the Store. Click on "Account" in your Quick Links. When you're in your Account information screen, go down to Purchase History and click "See all".
    Find the items that are not playing properly. If you can't see "Report a Problem" next to the items, click the "Report a problem" button. Now click the "Report a Problem" links next to the items.

  • With 5th gen nano, how to display album artwork during playback at all times, it stays on for a few seconds and then the screen goes black? Is there a way to play and see artwork, at all times (using with a aux. speaker)

    I have a 5th gen nano, and I play it often on a aux. speaker. I would like the album artwork to display at all times while playing it here. Right now it plays for a few seconds on each song, and then goes blank. Can this be changed?

    The artwork turns black or the screen's backlight turns off?  If the backlight turns off, simply disable the backlight timer, but keep in mind this will significantly reduce your iPod's playback time and battery life.
    B-rock

  • I click on a yahoo new article, it displays for a few seconds and then I get a blank screen.

    It happens only in Firefox,not explorer. When I click on a yahoo news article, it displays for a few seconds and then goes to a blank screen. I've run virus scans, eliminated all cookies, all to no avail.
    == This happened ==
    Not sure how often
    == I'm not sure

    Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
    See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]]
    If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
    You can use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
    You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")

  • While actively using the iPhone 5, Apple logo will randomly appear for a few seconds, then show up at the lock screen

    This is the weirdest thing I've ever seen an iPhone do.  I recently got the iPhone 5 from Verizon, 16GB (if that even matters) running iOS 6.0 respectively.  This has happened 3-5 times since I started using it last Friday when they started to deliver.  When this incident occurs, I'll be using my phone, as in it's unlocked and it's not just sitting.  Then, the Apple logo will appear and if I didn't know any better, I'd think my phone was turning on.  However, it only stays that way for a few seconds until it shows the lock screen, imitaing a startup.  The weird thing is, the startup time is ~30 seconds everytime I turn my device off and turn it back on.  This incident where it'll appear to be just turning on while I'm using the phone will only last for ~5 seconds.  Plus, during the incident, it nevers actually turns off the display or goes completely black.  It'll just snap directly from me using the phone to the Apple logo, then the lock screen after a few seconds.  Also, cellular services are immediately recognized after the incident, when starting up it usually take about 30 seconds.  I can't confirm this or not, but I believe this incident occurs when I press the home button to exit an app.  However, when it happens it strikes me by surprise and I can't confirm or not if this happens only when I'm exiting an app.  Not sure if this is an iPhone 5 specific problem or an iOS 6 problem...I can't really assume it's a bad power connection, since like I said it doesn't imitate a full startup of the phone, it just goes throught the screens (Apple logo -> lock screen.)
    And as a side note, I restart my phone daily.  And as rare of a problem this is, I'm not going to restore or wipe my phone and start fresh.  Just wanted to see if there was anybody else experiencing this problem and to make the problem aware. Thanks in advance for any help!!

    I had this same thing happen to me.  I was using my brand new iphone 5 (texting and listening to music through the speakers) when it flashed the apple logo, stopped my music and brought me to the lock screen. 

  • TS3276 I use Mail for my email and lately, if I get an email coming in while writing one, the program freezes for a few seconds. Frustrating.

    I have a 27" iMac 3.06 GHz Intel Core 2 Duo. I use Mail for my email. Just in the past 2 -3 months, if I'm writing an email while another one is coming in to the inbox, the program freezes, the spinning colour ball appears and I can't continue typing for 5 seconds or more. I get and write a lot of emails so it's frustrating.
    I've also noticed that sending messages is taking longer than it used to. The program spins its wheels for a few seconds before sending. Definitely noticeably longer than prior to this situation. Any ideas anyone?

    Hello,
    Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache.
    Note: ''This will temporarily log you out of all sites you're logged in to.''
    To clear cache and cookies do the following:
    #Go to Firefox > History > Clear recent history or (if no Firefox button is shown) go to Tools > Clear recent history.
    #Under "Time range to clear", select "Everything".
    #Now, click the arrow next to Details to toggle the Details list active.
    #From the details list, check ''Cache'' and ''Cookies'' and uncheck everything else.
    #Now click the ''Clear now'' button.
    Further information can be found in the [[Clear your cache, history and other personal information in Firefox]] article.
    Did this fix your problems? Please report back to us!
    Thank you.

  • Mac Mini display randomly blanks for a few seconds....

    The Mac Mini that I bought a few weeks ago randomly goes blank for a couple of seconds at a time (black screen). There is no regular interval between occurrences -- sometimes it can go an hour or more between "spasms," other times it may blank two or three times within a ten minute span. Occasionally, it comes back to a snowy screen, that lasts for another couple of seconds, before returning to normal.
    I have searched online, and have seen this mentioned in reference to the nVidia 9400, which is the graphics adapter in this model Mac Mini. I have tried both the mini-DVI to DVI adapter, as well as the mini-display port to DVI adapter, as was suggested in one post. The occurrences are less frequent with the mini-display port to DVI adapter, but they still occur with an unacceptable frequency (if occurring at all is acceptable). I have also tried three different flat-panel monitors (Samsung, LG, and Acer), with the same results.
    Has anyone else experienced this problem? Does anyone know of a solution, other than returning the computer?
    Thanks.

    Yes. This is exactly the issue I'm having. I'm both sad, and happy I'm not alone!
    I added this message in another post before I found this one.
    "I'm using a 27 inch ASUS LCD over DVI from the Mac Mini. It doesn't matter if I use a mini display port to DVI adapter or an HDMI to DVI adapter, the screen will randomly "Flicker" the image into a reversed color image thats slid to one side a bit. Other times it will go black for half a second randomly. And then, after a group of close together "Flickers" it will on occasion go into the "Colored static" issue like you are experiencing.
    I can either power cycle the monitor or the Mac to solve the issue. I assume this solves the issue because it forces the Mac to handshake with the DVI connection again, and temporarily resolves it. Some times it will only "Flicker" one or two times a day, other times it will do it in cascades until it goes into the "Colored noise" problem again, which I have only seen a half dozen times in the last few weeks.
    The Mac Mini did not do this initially, so I'm thinking it's from one of the boot camp updates? I hope it is, because that means it can be fixed with a patch."
    I'll drop apple some feedback. Thanks for the link!

  • I am using photos . I add a camera and make my photos slide in.  How do I add a second behavior to the photo to make it slide out.  I want the photo to hold on the screen for a few seconds in between sliding in and sliding out.

    I am using photos in Motion 5.  I add a camera and make my photo slide in.  How do i add a second behavior to the photo to make it slide out?  I want the photo to hold for a few seconds in between sliding in and sliding out.  When I am trying to do this  I am not getting the photo to hold, i am making one continuous motion which I do not want.
    Thanks

    Are you using the "motion path" behavior? If so just duplicate it and drag it down the timeline to where you want it to start. Trim it to end at the end of the project. The gap you leave in the timeline between the two behaviors is your hold time. Not sure why you are using a camera unless you have a behavior on the camera.If you are using keyframes just set two keyframes at the same position values in the inspector for the hold time.

  • HT4060 Cannot get iPad 2 charged beyond 1%.  All charging ports tried: AC adapter(s), USB 2 port on MacBook Pro. ITunes shows iPad only for a few seconds. iPad displays alternately: Apple logo, battery w/slim red band, then battery w/1% charged informatio

    Cannot get iPad 2 charged beyond 1%.  All charging ports tried: AC adapter(s), USB 2 port on MacBook Pro. ITunes shows iPad only for a few seconds. iPad displays alternately: Apple logo, battery w/slim red band, then battery w/1% charged information. How can I get it to charge beyond 1% so I can proceed to troubleshoot?

    I have had your exact problem with my old 3GS, now I cannot even get it to turn on, I still see that it is supposed to be charging though, but it never charges any so it seems.
    I replaced the Lower Dock Connector Assembly back when it still charged while hooked to my PC, and it found it made no real difference.
    http://www.amazon.com/gp/product/B003Y5YXLK/ref=oh_details_o05_s00_i00?ie=UTF8&p sc=1 
    At this point I am not sure if I should replace the battery and hope for the best, or just junk the phone, I cannot really sell it if I cannot reset it...

  • When I click on Creative Cloud logo, indicator for time passing goes for a few seconds and stops, but app not opening (it used to).  Any ideas?

    I've never used this feature to ask a question.  Pardon not knowing etiquette and such.  When I click on Creative Cloud logo/icon on my desktop, the indicator for time passing goes for a few seconds and stops, but CC app not opening. 
    CC app used to work on this same computer a few months ago.  No changes to operating system.  Photoshop is still working.  Just wanted to download Lightroom and perhaps begin learning it, but to no avail.
    Tried to look for a way to reinstall Adobe CC, but it says I already have it.
    Any ideas?
    Thank you in advance,
    Timothy

    Link for Download & Install & Setup & Activation problems may help
    -Online Chat http://www.adobe.com/support/download-install/supportinfo/

  • Is there an issue going on with the iPhones? And iPads? I cannot send text pics.  I can't get on Facebook, and I can't get on anything that uses Facebook ex Slotomania.  This has been going on for a few days!!!  It is happening with and without upgrades.

    Is there an issue going on with the iPhones? And iPads? I cannot send text pics.  I can't get on Facebook, and I can't get on anything that uses Facebook ex Slotomania.  This has been going on for a few days!!!  It is happening with and without upgrades.

    Contact facebook to address the facebook issues.

  • IPhone 3G displays apple logo for a few seconds then reboots (continuously)

    Hi all,
    So far my iPhone has gone from not turning at all to booting with the apple logo for a few seconds, then disappearing. My device will do this over and over again until the battery is dead. When I plug it into my computer, it works completely fine, syncs, restores, etc. The phone will remain powered on after unplugging from my computer, but my screen is unresponsive to touch and occasionally the lcd will become very dark (dimmed)
    My assumption as of right now is that it is a hardware issue, any suggestions or pointers for my next steps? I'm running out of ideas before I give it up and send it to apple

    Hello xtn,
    As paulcb mentioned, try resetting the iPhone. The behavior you've mentioned would be consistent with a stuck Sleep/Power button. However, it is odd that it mounts and works OK with your computer. A physically stuck button would tend to cause the iPhone to repeatedly mount and dismount from iTunes as well.
    One last thing you can try is to restore the iPhone and set it up as a new phone.
    If the issue persists, you may need to have it serviced:
    http://www.apple.com/ca/support/iphone/service/faq/
    Charles H.

  • My iPad suddenly started to show crazy colors.  I turned it off and had to use the two button trick to turn it back on.  Now it shows only green stripes for a few seconds and goes back to sleep.

    My iPad suddenly started to show crazy colors.  I turned it off.  It would not reboot until I used the two-button reboot.  Now it shows only green stripes.  only for a few seconds and goes back to sleep.  HELP!

    Standard troubleshooting...
    1. Try a Restart by pressing the sleep/lock button until you see the slider.  Slide to power off.  Restart by pressing the sleep/lock button until you see the Apple logo.
    2. Try a Reset by pressing the home and sleep buttons until you see the Apple logo, ignoring the slider if, it comes up. Takes about 5-15 secs of button holding and you won't lose any data or settings.
    3. Remove all apps from Recently Used list...
    - From any Home Screen, double tap the home button to bring up the Recents List
    - Tap and hold any icon in this list until they wiggle
    - Press the red to delete all apps from this list.
    - Press the home button twice when done.
    4. If still a problem restore with your backup.
    5. If still a problem restore as new, i.e. without your backup. See how it runs with nothing synced to it.
    6. If still a problem, it's likely a hardware issue.

  • Just updated from elements 11 to 13. When I try to use Levels in Elements 13. I click on the slider with my bamboo pen and nothing happens for a few seconds, sometimes not at all. This worked fine in Elements 11.

    Just updated from elements 11 to 13. When I try to use Levels in Elements 13. I click on the slider with my bamboo pen and nothing happens for a few seconds, sometimes not at all. This worked fine in Elements 11.

    Never mind my question on the photoshop elements 13 trying to install the camera raw update. It has been taken care of thank goodness!

Maybe you are looking for