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

Video of the bug found on Vimeo :

http://vimeo.com/26840477

Thats mine, I posted it earlier in the thread.

mathieufromquebec wrote:

 

Video of the bug found on Vimeo :

 

http://vimeo.com/26840477

I don't know if I dare click it, as I have just resumed my iMac from sleeping

LOL restart before

Even when my iMac didn't go to sleep mode I still experience an issue with the display.  In fact the iMac have difficulty to display the top screen menu bar and the dashboard.  Any other users experience this???

Here's 2 links to pictures showing the bug:

http://db.tt/FnxTO2h

http://db.tt/heSjixg

I've had the top bar look the same as you second image, also quite a few freezes today.

I've had this problem for weeks. To narrow it down, I belive its caused by the combination of Sandy Bridge CPU and Radeon 6XX0 graphics. Is everyone seeing this problem using this config? Anyone tried kernel debugger to try to get an error log?

Same problem with video on new intel iMac.  system freeze when trying to play embedded video links.  Seems only to happen if system up for a while.  does not free up even if left to soak.  Hard reset solve the problem then can play the same lnk.  Happens even with YouTube embedded links.  Seems less stable than leopard so far.  Leopard 0 crashes Lion *3 in 72hours.

So.. after reading every single box in all 15 pages.... I want to be accurate on 1 thing:

Is this bug ONLY showing up on brand new iMacs or re-furbished iMacs? I'm really hoping this is not a hardware issue as one poster noted previously.

There was one poster that downgraded back to SL-- issues resolve? Are you using a brand new iMac?

Just curious.

I'm having the same issue. My iMac keeps freezing when viewing internet videos (flash, youtube, etc) after upgrading to Lion. Very frustrating. Hopefully there will be a fix or at least an acknowledgement from Apple soon.

iMac 3.4Ghz Intel Core i7 - 8GB 1333Mhz DDR3

AMD Radeon HD 6970M 2048 MB

Mac OS X Lion 10.7 (11A511)

Having same issue with video being weird and having glitchy artifacts show up all over my UI.

@ kelliefrombeaverton

Mine is brand new, only 3 weeks old. Not refurbished. Base model 27" iMac.

So far not a single freeze since I turned sleep off... I've been watching quite a bit of video online too, so I'm thinking it is not a hardware issue, only drivers...

People who are reporting artifacting, is this only after sleep, or all the time?

Sounds like both. I have a refurb and it's been happening to me as well.

I tried the following:

1. Uninstalled Flash
2. Installed Flash blocker in Firefox
3. Installed Chrome, which has built-in Flash
4. Played YouTube video (after hitting "f" button to tell Flash blocker to allow Flash to play
5. Video played successfully
6. Put iMac (only a few weeks old - 27 in. model) to sleep
7. Woke up iMac
8. Repeated spted 4
9. System locked up

This was not a probelm before installing Lion.   Also not a problem if you play YouTube HTML5 videos.

I downgrade my computer today, and just testing.

Everything semms to be OK (with QT, MplayerX, and of course from youtube with the last Flash Player).

So the problem is on the Lion, it's not an hardware issue.

  Nom du modèle :          iMac

  Identifiant du modèle :          iMac12,1

  Nom du processeur :          Intel Core i5

  Vitesse du processeur :          2,7 GHz

  Nombre de processeurs :          1

  Nombre total de cœurs :          4

  Cache de niveau 2 (par cœur) :          256 Ko

  Cache de niveau 3 :          6 Mo

  Mémoire :          8 Go