On Oct 10, 2010, at 8:31 PM, Matt Penna wrote:
> Okay, here's an odd one. I was able to reproduce this twice with entirely
> different sets of files.
>
> I was attempting to open a large number of pictures simultaneously. Using the
> Finder, I selected what I wanted to open (between 600 and 1100 images) and
> hit Cmd-O. The pictures began to open one by one as expected in Preview.
>
> After about 300 pictures or so (not sure on the exact count since there's no
> real way to keep track), my video became very distorted - windows would no
> longer draw their contents and were replaced by large black areas, various
> screen elements would appear to move to another location, etc. The mouse
> cursor still displayed fine, and while the system allowed me to open menus or
> interact with the dock, I was flying blind and couldn't do anything because
> the display was not rendering anything correctly. Sleeping the system and
> waking it up made no difference and I had to either do a hard shutdown or use
> Ctrl + Cmd + Eject to reboot the system cleanly. The problem persisted even
> after all files had been opened. Opening the files individually or in smaller
> groups yielded no problems.
>
> I'm seeing this on a 2.8GHz quad-core Mac Pro (2008), 10.6.4, 16GB RAM,
> nVidia GeForce 8800 GT, 64-bit kernel. I've experienced absolutely zero video
> problems with this system outside of this issue, so I don't think it's
> hardware.
>
> Anyone with a bit of spare time and a Mac with a lot of RAM care to try to
> reproduce this?
As far as I'm concerned this falls squarely into the "Doctor, it hurts when I
do this" category.
However... have you considered setting the Preview preference to "Open groups
of files in the same window" with a navigable sidebar, instead of opening a
separate window for each image?
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