1 3 4 5 6 7 Previous Next 167 Replies Latest reply: Mar 7, 2014 2:13 PM by Golf25Radioman Go to original post
  • 60. Re: Screen sharing not working in mountain lion
    N4KHQ Level 1 Level 1 (0 points)

    Another work around in addition to not allowing you display to sleep or using SSH to wake your display is an iPad app called Mocha VNC. The Mocha VNC app will screen share the iMac with a sleeping display. I connect with the iPad, disconnect and connect with the MBP running ML before the display goes back to sleep.

     

    Looks like 10.8.1 will be out next week. None of the reports mention screen sharing. I wonder if Apple knows there is a problem. I wonder how wide spread the problem is as I have macs running ML that screen share as the should at least in one direction.

  • 61. Re: Screen sharing not working in mountain lion
    Perry Gershon Level 1 Level 1 (55 points)

    I have seen the beta 10.8.1 and I can confirm this bug is not fixed

  • 62. Re: Screen sharing not working in mountain lion
    einarso Level 1 Level 1 (0 points)

    One would think Apple scans these forums and that this is an "easy" bug to fix.  Really disappointet

     

    Any suggestions what is the best 3rd party software to do screen-sharing?  Or is there no such thing as everybody relies on the apple screen-sharing technologies?  Would also appriciate if anyone had tips for the best screensharing software for iPad i can use untill Apple fixes this.

  • 63. Re: Screen sharing not working in mountain lion
    Perry Gershon Level 1 Level 1 (55 points)

    I have submitted this problem to Apple with the Apple Bug Reporter.  Lets see what that gets us?

  • 64. Re: Screen sharing not working in mountain lion
    N4KHQ Level 1 Level 1 (0 points)

    Thanks, does ever communicate with developers?

     

    Any ideal how wide spread the problem is? I can not isolate the conditions that causes screen sharing to fail when the dislpay is sleeping but it is very consistantant and repeatable. I will install a new I mac next week and copy everything from the problem iMac to the new iMac. Wonder if I will still have the problem. I am think I probable will if I check everything on migration assistant.

  • 65. Re: Screen sharing not working in mountain lion
    Perry Gershon Level 1 Level 1 (55 points)

    One other piece of color.  When I get hung up now, rather than restart I SSH into the host to kill the screen sharing processes (I find them with the "top" command).  Seems pretty consistent now that there are two screen sharing processes open with process numbers x and x+2.  If I kill x+2, my hung screen share suddenly opens on the client Mac.  If I kill process x (sudo kill x), I get a login ID screen looking for user name and password, then the screen share opens.  Interesting set of facts that I bet is significant, though I dont know enough to explain what is happening.

  • 66. Re: Screen sharing not working in mountain lion
    Golf25Radioman Level 1 Level 1 (5 points)

    Michael Piperno wrote:

     

    "Go to System Prefs>MobileMe

    Click "Sign Out" (you're probably perma-signed-in)"

     

    This solved it for me. Thanks EastcoasterWestcoaster!

    There is no more MobileMe only iCloud.  Yes, if one upgraded over the top of Lion (or other) the Preference was still there but inoperative, giving some message about a deadline date to transfer your MobileMe files. 

     

    As I posted before I was having troubles, intermittently, accessing my Mac Pro (Lion 10.7.4) on my home network, which was easy before the MBPro update to ML.  I thought I had found (as noted in other posts) the problem, I installed the Lion 10.7.4 Combo Updater, and previously a PRAM reset had fixed the Screen Sharing.  Well it "broke" again and I was scratching my head.  I could share my network disks, connected to the Mac Pro but not the screen.  A little app I had been using my the MBPro called Screen Sharing Menulet, which put an icon in the menu bar was very convenient but had not been updated so I thought it might be the culprit - but not evening using a Finder Window/Share Screen would work.  Odd thing, the two different approaches to Share Screen would show a different attempt (address) on the desktop.

     

    Well, yesterday I did something more radical.  I formatted one of my "spare" drives on the Mac Pro, put a fresh install of Lion 10.7, migrated my files from the old Lion partition, then did all the updates, etc., to bring it current.  Today, after enabling Screen Sharing, File Sharing, etc. on the Mac Pro all is well accessing Screen Sharing (through the Core Services/Screen Sharing app, not the menulet). 

     

    Can't say for sure that it won't "break" again, but we'll see.  I can't believe how accustomed I had become to managing my home computers/network from my MBPro - from my living room "office," not the computer room where everything else is.

     

    I'll post again if anything changes.

     

    Tom

  • 67. Re: Screen sharing not working in mountain lion
    gattomatto Level 1 Level 1 (0 points)

    I solved a similar problem: I could connect with screen sharing just one time after reboot or after disabling/reenabling remote management on the target machine.

     

    Screen sharing was starting but hanging without establishing connection.

     

    Solution:

     

    Open the keychain and delete all the stored password related to the machine I could not connect.

     

    After that, screen sharing was again prompting for the password and then was connecting correctly.

     

    It seems to be a problem of autentication failure which is not reported, but just hangs the connection.

     

    Actually I found this solution in other thread, but I cannot find it again.

  • 68. Re: Screen sharing not working in mountain lion
    N4KHQ Level 1 Level 1 (0 points)

    Thanks for the info but I must have a little different problem. Screen sharing won't start if host computer is sleeping. I have deleted about 1/3 of the KeyChain. I deleted everything connected to 192.168.254.xxx and no luck. If I try to connect and the display is sleeping, the display wakes but the screen never appears on the connecting computer. I force quit screensharingAgent and it pop right up. I can connect as many times as I wish as long as the host computer display is awake.

  • 69. Re: Screen sharing not working in mountain lion
    powerknapp Level 1 Level 1 (0 points)

    Hi Kindian (and everybody else):

     

    There's a bug in ML whereby VNC freezes up and gives errors to users seeking remote access.  Several Remote Management reporting features seem to freeze up as well.  Here's the work around until Apple issues an update:

     

    (1) Enable SSH access on the nonresponsive client machine.  Probably have to do this in person.

    (2) After VPN-connecting to the remote LAN hosting the client, fire up terminal.

    (3) SSH into the client that is denying you remote VNC access:

     

    ssh username@123.456.7.8

    (or whatever IP the computer has been assigned on the LAN, e.g. johnsmith@192.168.1.2)

     

    (4) Turn off ARD using the following:

     

    sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/k ickstart -deactivate

    Wait a couple seconds to be safe, then turn it on again:

     

    sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/k ickstart -activate

    (5) kill the SSH connection by typing EXIT or LOGOUT.

     

    VNC should be working again.

  • 70. Re: Screen sharing not working in mountain lion
    John Patrick1 Level 1 Level 1 (5 points)

    I'm not sure how generalizable this solution will be (and it did require someone physically accessing the remote machine to get it done), but it worked for me.

     

    1) Had someone manually restart the machine I could not access via Screen Sharing except immediately after a restart (no fixed IP to SSH into, alas)

    2) Accessed via Screen Sharing immediately after restart - something I had been able to do, but only once immediately after each restart

    3) Made sure computer and display sleep were set to "Never" and had trusted associate turn off power to the monitor (latter simply to save energy and the monitor)

     

    4) I suspect most importantly, opened Keychain Access and searched for term "mobile".  Had three matches - deleted the one labeled "MobileMe Sharing Certificate" .

     

    I was then able to close my screen sharing session, reopen it, remotely restart, and have reaccessed multiple times via screen sharing since with no problems.

     

    Hope it works for some others.

     

    From looking at Console logs it seemed as if the sharing session had been stalling somewhere on the handshake between the two machines, so perhaps the mobileme certificate was the issue in my case.

  • 71. Re: Screen sharing not working in mountain lion
    N4KHQ Level 1 Level 1 (0 points)

    I just replaced the offinding imac with an new imac and it fixed the problem. I had repaired the disk and permission serveral times on the iMac but is would not screen share if display was sleeping. After trying to use migration system several time over a 10 hour to migrate the data from the old iMac running Mountain Lion, I gave up. The new computer could never calculate the size of user data, applications, documents, or other files. I left it trying up 2 hours on several occasions. I turned back to my mac off and disabled several things on the Mac I was trying to copy but nothing helped. I finally created an account on the new iMac and tried again. In most of the tries I was using an either net caple to connect the two macs. When I ran migration assistant on the new iMac andon the old iMac and got to the stage of calculacuting data size, instread of calculating for ever a dislog popup on on the new iMac under Migration Assistant telling me the old iMac had disconnected.

     

    I think the failure to migrate is connected to the screen sharing problem. I finally restored the data, settings, applications, and documents from time machine and the new iMac is now screen sharing from a sleeping display.

  • 72. Re: Screen sharing not working in mountain lion
    chinhster Level 1 Level 1 (0 points)

    I was having problems connecting my Air that was recently upgraded to ML to an iMac that was still running Lion.  The screen sharing app would launch but nothing would happen.  In addition, my iMac's display would then never go to sleep and I would have to reboot it.

     

    I tried repairing disks and rebooting with no success.

     

    From a suggestion earlier, I tried kickstart deactive/reactivate but that didn't work.  I then deleted my keychain entry for the remote Mac on my local Mac and finally got my password prompt back when I tried to connect through screen sharing.  I would just get a dialog that it was trying to connect but it would just sit there.  I then rebooted the remote Mac and was able to connect through screen sharing again.  I suspect the solution for me was to delete the keychain entry and reboot the remote Mac.

  • 73. Re: Screen sharing not working in mountain lion
    Golf25Radioman Level 1 Level 1 (5 points)

    Just to be clear, this terminal use should be on the computer trying to be accessed by Screen Sharing, not by the one initiating the Screen Sharing?

     

    Tom

    powerknapp wrote:

     

    Hi Kindian (and everybody else):

     

    There's a bug in ML whereby VNC freezes up and gives errors to users seeking remote access.  Several Remote Management reporting features seem to freeze up as well.  Here's the work around until Apple issues an update:

     

    (1) Enable SSH access on the nonresponsive client machine.  Probably have to do this in person.

    (2) After VPN-connecting to the remote LAN hosting the client, fire up terminal.

    (3) SSH into the client that is denying you remote VNC access:

     

    ssh username@123.456.7.8

    (or whatever IP the computer has been assigned on the LAN, e.g. johnsmith@192.168.1.2)

     

    (4) Turn off ARD using the following:

     

    sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/k ickstart -deactivate

    Wait a couple seconds to be safe, then turn it on again:

     

    sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/k ickstart -activate

    (5) kill the SSH connection by typing EXIT or LOGOUT.

     

    VNC should be working again.

  • 74. Re: Screen sharing not working in mountain lion
    Golf25Radioman Level 1 Level 1 (5 points)

    Above in a message I had noted that on the computer that I had trouble accessing since my MBPro upgrade to ML I had repartitioned one of its internal HDs and made another bood drive and installed a "FRESH" copy of Lion (too old of a MacPro to go ML).  Then migrated my apps, users, etc. from the old boot Lion drive.  It is possible that this process eliminated some of the things being described as fixes, since the Lion OS was fresh.  One note, even after the install was finished and the Software Update brought up many items to bring the OS up to date, one thing it didn't install was Safari 6.0, and 5.6.1 (or whatever the version) will not run & will crash once 6.0 has been installed.  My saving grace was a Time Machine BU, but even that was convaluted to get in place.  Since one cannot delete Safari, or replace from a TM BU, I had to "keep both files" on the TM BU replace, move the older Safari to another folder, rename the 6.0 to just Safari, then go to that other folder and delete it.  I don't think Apple/Support has yet to place a stand alone download of Safari 6.0, so this was my work around.

     

    But back to the Screen Sharing, after ditching the Screen Sharing Menulet, and just putting the Core Services/Screen Sharing in my dock, all has been well accessing the Mac Pro via my home network (knock on wood).

     

    Totally out of place on this message thread, but I have to say it...I sure wish I could install ML on my older Mac Pro (version 1,1).  Have read the graphics constraints (have a compatible graphics card, so not an issue), the 64 bit system requirement (eventhough the 1,1 can do 64 bit but the Firmware can't be flashed to say that), I sure would like to have my 3.0 GHz Dual Xeon 8 core (two duals) be able to run ML.  But I'm not going to chance some of the hacks that purport to allow installation of ML - it is too central to my home network to chance an issue of crashing or who knows what else.  Still does its job well, but only up to Lion unfortunately.

     

    Thanksfor all the feedbackon this Screen Sharing issue.  Until this thread came up I thought many things could be involved, and even though my fresh install Lion to a new partition has solved MYproblems, I may have been able to fix the old install with the above suggestions.

     

    Great resource this Apple Discussions Forum - lots of very knowlegable people and much help from the first issue that cropped up with the ML upgrade.

     

    Tom

1 3 4 5 6 7 Previous Next