rubenlx

Q: OSX Lion + 2011 iMac 27'' + Video = Freeze

Hello.

 

Got a brand new 27'' iMac, installed Lion. The machine freezes randomly when starting to play videos, either on Youtube, Quicktime, iTunes.

 

When it freezes, the mouse still works, but the machine doesn't respond to any command, requiring me to hit the power button and restart the computer.

 

Searched on kernel.log and system.log, and found no crash/error/message.

 

Anyone suffering from the same problem? The machine is pretty solid, been running some OpenCL kernels too and they are ok. It's only video decoding (possible on the GPU) that seems to freeze randomly.

iMac, Mac OS X (10.7)

Posted on Jul 21, 2011 6:46 AM

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Q: OSX Lion + 2011 iMac 27'' + Video = Freeze

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  • by longhighway,

    longhighway longhighway Jul 27, 2011 6:42 PM in response to mathieufromquebec
    Level 1 (0 points)
    Jul 27, 2011 6:42 PM in response to mathieufromquebec

    Is this the correct version?

     

    flashplayer11_b1_uninstall_mac_071311.dmg

     

    (from http://labs.adobe.com/downloads/flashplayer11.html)

  • by mathieufromquebec,

    mathieufromquebec mathieufromquebec Jul 27, 2011 6:50 PM in response to longhighway
    Level 1 (0 points)
    Jul 27, 2011 6:50 PM in response to longhighway

    longhighway wrote:

     

    Is this the correct version?

     

    flashplayer11_b1_uninstall_mac_071311.dmg

     

    (from http://labs.adobe.com/downloads/flashplayer11.html)

     

    It should work... You won't have it in your Utilities?

  • by mathieufromquebec,

    mathieufromquebec mathieufromquebec Jul 27, 2011 6:49 PM in response to Celshader
    Level 1 (0 points)
    Jul 27, 2011 6:49 PM in response to Celshader

    Celshader wrote:

     

    Wow, I was kind of hopeful... Went through your steps, exacly as described... First try after a sleep and it crashed just as usual.

     

    Sorry for you but worked fine for me on a top end iMac 27" mid 2011 with 8 gigs of RAM.

  • by spacecadetG5,

    spacecadetG5 spacecadetG5 Jul 27, 2011 7:05 PM in response to mathieufromquebec
    Level 1 (5 points)
    Jul 27, 2011 7:05 PM in response to mathieufromquebec

    Seems to have worked for me as well but will give it a little longer to make sure I haven't spoken too soon. Also, if you go to a YouTube video after restarting in Safe Mode, the link to download Flash does not appear to be to the Flash 11 beta that has been suggested. I needed to hunt around for it.

  • by mathieufromquebec,

    mathieufromquebec mathieufromquebec Jul 27, 2011 7:11 PM in response to spacecadetG5
    Level 1 (0 points)
    Jul 27, 2011 7:11 PM in response to spacecadetG5

    spacecadetG5 wrote:

     

    Seems to have worked for me as well but will give it a little longer to make sure I haven't spoken too soon. Also, if you go to a YouTube video after restarting in Safe Mode, the link to download Flash does not appear to be to the Flash 11 beta that has been suggested. I needed to hunt around for it.

     

    Good news! It doesn't seems to be but it is once the download is finish and the installer is launched... I know it is written 10.3 to 10.6 but in fact it is 10.7 : just another bug )

  • by xoxo-gossipgirl,

    xoxo-gossipgirl xoxo-gossipgirl Jul 27, 2011 7:23 PM in response to rubenlx
    Level 1 (4 points)
    Jul 27, 2011 7:23 PM in response to rubenlx

    I'm adding myself to the list as well... I just got my new iMac (2011-mid 21.5) less than a week ago. As soon as I got it, I upgraded to Lion & today it completely froze (all but the trackpad) when I clicked on a youtube link on FB. This was the 2nd time it has happened... Like others, I don't recall what I was doing because I wasn't expecting it. I immediately called AppleCare & went through some troubleshooting.

     

    1. Repaired disk image

    2. Moved all caches (from 3 folders) to trash

    3. Emptied the trash except for a few "stubborn" ones in use

    4. Shut it down

    5. Unplugged every cord (including power) from the back... Immediately plugged it all back in

    5. Turned it back on

    6. Reset it by holding down OPTION+COMMAND+R+P until it "chimed" twice... Quickly released all keys

    7. Emptied the trash again to get rid of everything

     

    I then was given a code to call back if I had any other problems & I'm glad I wrote it down! Almost exactly an hour later a sheer dark sheet slowly scrolled from the top & to the bottom of my screen... Freezing EVERYTHING this time & demanding a mandatory shut down. Of course I called again, but they were closed for the night.

     

    Just wanted to share my story I'll update again tomorrow...

  • by Dingerz,

    Dingerz Dingerz Jul 27, 2011 7:30 PM in response to rubenlx
    Level 1 (14 points)
    Jul 27, 2011 7:30 PM in response to rubenlx

    I just installed the beta flash version 10.3.181.34 from here:  http://get.adobe.com/flashplayer/

     

    They acknowledge that there have been problems with Lion. 

     

    I simply installed it overtop the old version I had that I downloaded when I got the computer a month and a half ago.  So now I am about to let it fall asleep and I will test the videos after.  Hopefully it should work!

  • by mathieufromquebec,

    mathieufromquebec mathieufromquebec Jul 27, 2011 7:34 PM in response to mathieufromquebec
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    Jul 27, 2011 7:34 PM in response to mathieufromquebec

    mathieufromquebec wrote:

     

    mattfromnewtown said :

     

    I went to the Apple store yesterday. This is how my 2011 21.5 I5 got fixed- Did the PRAM reset then before the computer beeped again hit shift. rebooted. Uninstalled Flash. Installed the Beta version of flash for Lion from the Adobe website(After uninstalling  Flash you can just go to youtube and try and open a video and it will ask you if you want to install flash, too). Between last night and all of today I came out of sleep at least 25 times and no lock ups. The Genius told me the Snow Leopard version of Flash is not compatible with Lion. Flash does not come with Lion. Good Luck!

     

     

    Like all of you I already tried a bunch of things without ANY success.  BUT THIS IS THE SOLUTION.  You have to do it exactly like this :

     

    1) Reset the PRAM (Hold CMD + ALT + P + R at startup)

    2) Boot in safe mode right after (Hold SHIFT before the second beep) (You should see a progress bar you don't normally see)

    3) In safe mode go to Applications/Utilies/Adobe Flash Manager and uninstall Flash Player

    4) Always in safe mode (DON'T LOG OUT) go to YouTube to be prompt to install latest Flash Player version. Do so.

    5) Restart the computer and enjoy Snow Leopard stability in Lion… Resolved freeze with flash video AND .mp4 video AND any other video type after several sleep...

     

    First observation : Only uninstalling Flash do NOT resolve the problem

     

    Second observation : Uninstalling Flash and reinstalling without reseting PRAM or Safe Booting do NOT resolve the problem.

     

    Third observation : After those manipulations the Adobe Flash Player does not appear in System Report under Applications…. STRANGE…

     

     

    Please keep me up to date with your results!

     

    Edit : The issue come back after a reboot if I don't reset the PRAM.  For now if I reset the PRAM every time I reboot no more freeze reading video after a sleep. Apple still have to do their homeworks...

  • by mathieufromquebec,

    mathieufromquebec mathieufromquebec Jul 27, 2011 7:35 PM in response to Celshader
    Level 1 (0 points)
    Jul 27, 2011 7:35 PM in response to Celshader

    Celshader wrote:

     

    Wow, I was kind of hopeful... Went through your steps, exactly as described... First try after a sleep and it crashed just as usual.

     

     

     

    Have you seen my last post? Issue come back after a reboot if I don't reset the PRAM... Try rebooting with a reset...

  • by E2LT,

    E2LT E2LT Jul 27, 2011 7:50 PM in response to Dingerz
    Level 1 (0 points)
    Jul 27, 2011 7:50 PM in response to Dingerz

    Any suggestions on how to even use the computer to get the new flash??  I have reset several times now ( holding down power button).  When the desk top comes back up (after a really long time) I'm lucky to get one move out of the mouse before the fun beach ball comes out again.  Has anyone taken their iMac into the apple store yet with this?  Any help would be great!

  • by Celshader,

    Celshader Celshader Jul 27, 2011 7:54 PM in response to mathieufromquebec
    Level 1 (0 points)
    Jul 27, 2011 7:54 PM in response to mathieufromquebec

    For me resetting the PRAM will help to temporarily fix the problem sometimes, but it always comes back... This falls in line with many previous posts after people talked with AppleCare... I have had the system freeze after sleep directly after a PRAM reset, so it does not reliably "fix" it.

     

    I think we are out of luck until Lion gets patched... this is futile.

  • by E2LT,

    E2LT E2LT Jul 27, 2011 8:00 PM in response to Celshader
    Level 1 (0 points)
    Jul 27, 2011 8:00 PM in response to Celshader

    I guess I'll try this after apple issues a fix for this problem. For now looks like it's all iPad for me!  Thanks for the help!!

  • by longhighway,

    longhighway longhighway Jul 27, 2011 8:37 PM in response to mathieufromquebec
    Level 1 (0 points)
    Jul 27, 2011 8:37 PM in response to mathieufromquebec

    I tried your procedure several times, and it worked once for a single sleep/wake, but it doesn't seem to solve the problem for me (4-week-old 27 in. iMac).


    Thanks, though.

  • by zoph,

    zoph zoph Jul 27, 2011 10:47 PM in response to mathieufromquebec
    Level 1 (0 points)
    Jul 27, 2011 10:47 PM in response to mathieufromquebec

    I've try the flash player beta 11 and my iMac just crash with safari 10 minutes later. that is not a solution.

     

    I've also try the PRAM Reset, didn't change anything.

     

    Apple, please update this post.

  • by macmaniac_at,

    macmaniac_at macmaniac_at Jul 27, 2011 11:19 PM in response to rubenlx
    Level 1 (0 points)
    Jul 27, 2011 11:19 PM in response to rubenlx

    Same Problem here. Mostly on YT Videos (27" i7 iMac 2011) but also every once a while when e.g. opening a MOV with Quickview. Annoying as it's the only bug I have with Lion :-(

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