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Snow Leopard, channel exception errors and Path Finder

Friday, September 4th, 2009

There are new developments in the on-going saga of the channel exception errors. Now that I have installed Snow Leopard, I haven’t been able to reproduce the problem on my Mac Pro, i.e. I haven’t experienced the permanent system-wide UI freeze that requires a hard reset or a remote shutdown. But it could just be […]

Channel exception error with NVIDIA card: Now a ‘known issue’

Thursday, September 3rd, 2009

There has been a bit of a breakthrough with the “channel exception” error encountered by Mac Pro users with NVIDIA GeForce 7300 cards which causes a system-wide UI freeze requiring a hard reset. I have now received an e-mail from Apple Developer Bug Reporting confirming that the bug is a a “known issue, which is […]

Channel exception error with NVIDIA card: Heat and GeForce card replacements

Monday, August 31st, 2009

I experienced my third channel exception error / GPU restart in 10 days last Friday (August 28). The symptoms were the same as with the previous one: The entire UI froze with no apparent reason while I was attempting to drag a message window in Mail in order to move it around. (It used to […]

Channel exception error with NVIDIA card: Using stackshot

Friday, August 21st, 2009

I am afraid that, now that the problem has come back on my Mac Pro, it’s decided to stay for a while. I had another system-wide freeze yesterday, and that time I was not even opening a new file in Preview or anything like that. I was just moving a message window around in Mail. […]

Channel exception error with NVIDIA card: It’s back

Wednesday, August 19th, 2009

After many weeks without a single occurrence, I am afraid I have to report that the problem with the “channel exception” error linked to the NVIDIA graphics card in my Mac Pro appears to be “back.” Yesterday, I was working with a number of applications open and I selected a couple of PDF files in […]

Mac OS X 10.6 (Snow Leopard): Performance and video issues

Monday, September 21st, 2009

The consensus around Snow Leopard is that it is a system upgrade that actually improves Mac OS X’s performance on your existing hardware. Since I installed Snow Leopard a couple of weeks ago, however, I cannot say that my own experience confirms this widespread view. Performance is not markedly worse overall, but it’s not really […]

Problem with NVIDIA graphics card: Solved?

Monday, July 13th, 2009

A month ago, I wrote about a problem I was having in Mac OS X where the entire UI would freeze (except for the mouse pointer) or windows in a specific application (typically Preview) would become scrambled. At the time, the console and crash reporter logs seemed to indicate that it was a problem related […]

Mac OS X 10.5.6/7: Bug with NVIDIA graphics driver?

Tuesday, June 9th, 2009

My three-year-old Mac Pro is equipped with an NVIDIA GeForce 7300 GT graphics card and has two monitors connected to it, a 30″ and a 23″, both Apple models. Recently, I have started experiencing problems that seem to be related to the graphics card. I am not sure exactly when they started, but I strongly […]