Nasty bug that's too much like crashing.

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squidthingsquidthing
Posted:
in macOS edited January 2014
Several times recently I have been suddenly logged out without any warning. First the screen goes completely blue (Remind you of anything?) then I'm just given the log in screen and have to log in again like nothing's happened.



It's happened once in Cubase SX and once in Safari, and I think once in the finder.



Andrew
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  • Reply 1 of 22
    mount_my_floppymount_my_floppy Posts: 913member
    How much RAM do you have? I believe this has something to do with virtual memory errors.
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  • Reply 2 of 22
    squidthingsquidthing Posts: 124member
    I have 768mb of physical RAM, I'm not sure about Virtual Memory, where do I manage it from?



    Andrew
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  • Reply 3 of 22
    mount_my_floppymount_my_floppy Posts: 913member
    OS X does it on its own.
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  • Reply 4 of 22
    overhopeoverhope Posts: 1,123member
    I've got my Cube to do this, but only by unplugging the speakers while logged in. Only did it the once, mind you...
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  • Reply 5 of 22
    kim kap solkim kap sol Posts: 2,987member
    It's the windowmanager crashing.
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  • Reply 6 of 22
    bluerabbitbluerabbit Posts: 105member
    This has happened a couple of times to me right after I log in.
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  • Reply 7 of 22
    mount_my_floppymount_my_floppy Posts: 913member
    Quote:

    It's the windowmanager crashing.



    Duh why didn`t I think of that..
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  • Reply 8 of 22
    squidthingsquidthing Posts: 124member
    What's the windowmanager? Something to do with QE?

    And is there a fix for it, it's a bit unnerving when you never know when it's going to happen next.



    Andrew
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  • Reply 9 of 22
    kim kap solkim kap sol Posts: 2,987member
    Quote:

    Originally posted by SquidThing

    What's the windowmanager? Something to do with QE?

    And is there a fix for it, it's a bit unnerving when you never know when it's going to happen next.



    Andrew



    The name says it...it manages windows on and off-screen. If it crashes, you've got nothing to work with...so OS X just sends you back to the login screen so that it can relaunch the window manager.



    I don't know why it has to take everything down with it...



    Anyone know?
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  • Reply 10 of 22
    code mastercode master Posts: 344member
    I've had this issue quite often (without QE so the bug is elsewhere) and I have a GB of RAM. I too traced it to the window manager. When we have the ability to have multiple users logged in, I'll be it'll just restart in the background like the finder and restore us to where we were.



    Two other bugs that I haven't been able to track down are where all but one app crashes all at once (well, each a second or so apart) but things continue to go on well after that. The other is when whatever part controls drag and drop dies and only a restart fixes it (if I knew the component handling that, I could just restart it... any ideas?)
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  • Reply 11 of 22
    mount_my_floppymount_my_floppy Posts: 913member
    Quote:

    I don't know why it has to take everything down with it...



    Anyone know?



    Because OS X does not have the feature that windows XP has where you can have apps running when you logout. Sence it takes you back to the login screen it has the side effect of quiting your apps
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  • Reply 12 of 22
    mrmistermrmister Posts: 1,095member
    I've never seen that, except by killing the windowmanager in the terminal...I wonder what's going on for you?



    I'd clean out your preferences, stat.
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  • Reply 13 of 22
    gargoylegargoyle Posts: 660member
    Quote:

    Originally posted by kim kap sol

    I don't know why it has to take everything down with it...



    Anyone know?



    Apple programmed it that way! On linux you can kill your window manager and all the window boarders vanish, but your apps still run. You just cant move or select the "windows".
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  • Reply 14 of 22
    t'hain esh kelcht'hain esh kelch Posts: 1,274member
    Made me wonder... Is it the Finder that is slow, or is it the Window Manager?



    I mean, on XP windows pop up instantaniously ( ) but it certainly doesnt do it on OSX..
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  • Reply 15 of 22
    lucaluca Posts: 3,833member
    Hah, ever try getting a window to "pop up instantly" in XP after attempting to resize a currently playing QuickTime movie window?



    QuickTime for Windows sucks far worse than Windows Media Player for Mac does. It's not much different from QuickTime for Mac except that it's much slower (expected) and it crashes all the time (ugh). And when it crashes, it brings my computer to a halt for 1-2 minutes, during which I can (slowly) do other stuff.



    My PC has encountered a number of crashes like that in the last week, all but two or three associated with QuickTime. If I didn't use QT, it would be somewhat stable (though nothing near OS X).
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  • Reply 16 of 22
    mrmistermrmister Posts: 1,095member
    XP has the winowmanager in the kernal--bad for stability long term, good for speed.
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  • Reply 17 of 22
    t'hain esh kelcht'hain esh kelch Posts: 1,274member
    Quote:

    Originally posted by mrmister

    XP has the winowmanager in the kernal--bad for stability long term, good for speed.



    Bad in which way? If you can explain..
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  • Reply 18 of 22
    kickahakickaha Posts: 8,760member
    Well, you know how when the window manager in MacOS X crashes, and you get sent back to the login window?



    In XP it blue-screens into a kernel panic.
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  • Reply 19 of 22
    mrmistermrmister Posts: 1,095member
    Exactly.
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  • Reply 20 of 22
    spartspart Posts: 2,060member
    I remember something similar to this happening, but I don't believe it's because the Window Manager crashed (I'm probably wrong though.)



    As an experiment, I completely filled up my System volume and opened a bunch of memory sucking apps so the system couldn't write any VM.



    Boom, Login Window.
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