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  • RusInc Level 1 (0 points)

    Same problem here.

    I install pure ML 10.8.2

    I have rMBP

    I did hardware test - everything good.

    10.8.3 didnt fix it (I have latest beta right now 12D58)

    Doesnt metter which graphic Ill use HD 4000 or GT 650M

    Reset safari doesnt help

    If I greate NEW USER or use GUEST USER I dont have any artefact (tested for 20 minutes).

    Google Chrome and other browser dont have these problem.

    Im hoping new Steve Jobs on his way, and before I dead he make new company and I can enjoy best product on the planet again

    Good luck everybody, take care yourself!


    P.S. Best solution for me right now - Use google chrome and Safari. Its not a big problem do CMD + TAB and switch between them.

  • Carl James Level 1 (10 points)

    I have installed the beta of 10.8.3 and can tell you that on my machine this update did not fix the issue. It "seems" better, but it still happens. It definetly happens more when I am on battery then while plugged in. I can only hope that they release a new version of safari that fixes this issue, or I will be forced to go buy a new machine.

  • LandonAB Level 1 (0 points)

    A new machine? Beacuse of a buggy browser? Did you ever run Windows and Internet Explorer prior to IE9?


    Install Chrome on your Mac and use it until Safari issues are ironed out. That's what I am doing and could care less now about Safari. Plus both are webkit.


    Otherwise, not sure what kind of machine you are planning on buying.

  • crimsonpenguin Level 1 (0 points)

    Has anyone tried installing gfxCardStatus, turned it to Discrete Only, and not had that fix it? That's working for me. What I find is that it can happen when using discrete, but only if it switched back and forth while you were using Safari. It never happens to me if I never switch.

  • Vaelian Level 1 (5 points)

    Enabling the dedicated GPU simply stops more corruption from occurring.  If the page has already been rendered with corruption, that corruption will stay until the page is refreshed, but pages fully rendered with the dedicated GPU don't display any corruption.


    I do recal that, on my system, Safari 5 used to hang for a fraction of a second before scrolling in complex pages, which was probably the dedicated GPU kicking in to handle the load and thus preventing or mitigating corruption on Safari 5.  Since Safari 6, however, I haven't noticed these short hangs, which may indicate that Safari is rendering everything using the built-in GPU.  However, if rendering using the built-in GPU was ever a problem, then 13-inch MacBook Pro and all MacBook Air owners would have seen corruption in Safari 5, because the built-in GPU is the only available option on those systems.


    ***** to hear that this isn't fixed in 10.8.3.

  • Carl James Level 1 (10 points)


    A new machine because of a bug affecting my current machines graphics processor. Yes. What is windows and internet explorer? There used to be a browser called internet explorer but that was like os 10.4.


    I use three different browsers for three different reasons. The things I use Safari for, I need safari. (web dev) It crashes my machine.


    And to Vaelian, they have not released the final beta to 10.8.3, they may still fix this. Also, this may be fixed in a Safari update.

  • jordanborth Level 1 (0 points)

    So what can we do to actually bring this to Apple's attention? Safari is a critical component of OS X and the fact that it is basically broken is a big problem. As a designer I also need to test applications/web sites/etc in Safari and it gets hard when all of the UI is rendered wrong :/

  • David A. Gatwood Level 3 (580 points)
  • ralp64 Level 1 (0 points)

    I got the same problem with Safari after upgrading to ML. The problem occurs just, when the typo in the css uses this "text-rendering: optimizeLegibility;"


    I didn´t read the whole thread (13 pages) here. But i find a solution - which helped me - on another place:



    No idea, what that hack does or causes - but it helped me anyway - thanks for this!



  • ctrip Level 1 (0 points)

    I have the same issue with a 15" retina display (mid 2012).

    Another weird behavior is that scrolling the page in Safari makes my iTunes music sound like a scratched disk.


    I had to switch to Firefox, which is much more fluid and doesn't cause such problems.

  • asidden84 Level 1 (0 points)

    mbp 15inch mid 2010

    after upgrading to ML (I've upgraded from SL to Lion, and from Lion to ML - so maybe the reason is in a not fresh install, however I've tried restoring ML without formatting HDD) Safari started dissapointing me with rendering issues (Google Reader for great example) and gif images glitches when they're loading. Disabling Automatic Graphics Switching immediately has fixed the issue, but reduced my batter life time.


    Wishing Apple will fix this someday.

  • dirtybeard Level 1 (0 points)

    I recently found this post on the Chromium discussion forums about Chrome's lack of support for dynamic GPU switching and found this interesting tidbit:


    Per discussion with kbr, the switching behavior in pre-2011 MacBook Pros are disastrous, so we might still hardwire the forcing-on-discrete-gpu to stay on the safe side for our users.


    So Safari isn't alone in having these issues, although Apple should have a leg up on getting this fixed.

  • Samuel Menezes Level 1 (0 points)

    Hi guys,


    I have the same problem with Safari, exactly how Shawn McCuan showed.


    The same problem happening with Adobe Photoshop CS6 while dragging a selection (the selection square doesn't get out off screen after releasing the button). Another issue is when typing, most times the letters don't appear.

  • ARISTEIA Level 1 (0 points)

    I also have the same issues. I haven't found anything as far as upgrades or check etc that will help it seems to be consistant throught OSX upgrades and started with Mountain Lion.

  • t1hcsq Level 1 (0 points)

    I am also having the same rendering problems. They have been happening since I bought my computer this summer. It is a 15" Retina Macbook Pro and it had a clean install of Mountain Lion on it. I am also noticing some rendering issues with Microsoft Word in which I will be unable to see the position of the cursor.


    I find that restarting the computer will resolve the problem for a short time. In MS Word if I min/max the window I can tease it into rendering properly for a short time as well but it doesn't last.