troubleshooting/tutorials/security

08/08/2005, 7:40pm, EDT

Monday, August 8th

Problems documented with single-processor G5 desktop

G5Freeze.com describes several user-documented problems with the single-processor 1.8GHz Power Mac G5 (late 2004). The site says that at least three problems have been documented by users across the web and on Apple's own discussion forums, although Apple has not formally acknowledged any wide-spread issues nor has issued any sort of recall on the systems. "From the first day I owned this computer one thing was lacking: Stability. But the culprit was the fact that no scenario could be made up to force the G5 to get unstable. The only thing that was sure: sooner or later the system would crash."

Apple released the single-processor 1.8GHz Power Mac G5 as an low-price alternative to its dual-processor configurations in 2003 and subsequently released an update to this model--with a slower bus speed--in 2004. The problems appear to be isolated to updated 2004 model--which also has since been discontinued in June of 2004.

The website documents three specific symptoms that cause the system to crash: The "Eject Syndrome", caused by pushing the CD eject key, sometimes crashes all applications related to mounting or unmounting a volume/drive; a second sympton is described as a "Wake from Sleep" syndrome, where the machine will not properly wake after being put to sleep; and the third is called the "Full Screen OpenGL syndrome" under Mac OS X 10.4 Tiger, which causes the machine to cease all graphics functions after quiting a full-screen OpenGL-based application following a few hours of operation. These symptoms have been reported by dozens of users on Apple's free support area.

"The best thing about this bug is the fact that it can be reproduced. The worst thing about this bug is the fact, that it affects only (you guessed it) PowerMac G5 Single (late 2004). The freezing symptom can be noticed from within safari, too. After about two hours of uptime there is a high chance that the mac freezes when watching an embedded quicktime movie. A good way to reproduce this failure is surfing to the apple quicktime page after two hours of usage."

The site offers a few workarounds that seem to help some users, including turning off some power management features, reverting to Mac OS X Panther, using the more expensive Mac OS X Server, and more; however, the workarounds appear to be temporary and in some cases, cost the user time and money. Interestingly, the site notes that one particular "freeze" may be temporary and the user may regain control of the machine after waiting a few hours.


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Afflicted
0
08/08, 8:27pm, EDT
I'm totally afflicted by all three of these crashes. I was able to get my motherboard changed once, as bluetooth was acting wacky (BTO), but since Apple has denied servicing my machine any further because they can't recreate the failure.

I've been suffering with this since the day it arrived at my doorstep, and in combination with my Powerbook "losing" its lower RAM slot, I'm getting VERY annoyed at Apple and their definition of "Warranty" and "Service".
Fresh-Faced Recruit
Joined Dec 1999
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Discussion Forums...
0
08/08, 11:38pm, EDT
Discussion forums are a great thing, but you cannot presume a known systemic failure (and cover-up thereof) simply because other people are experiencing issues similar to yours. After all, if you walk in to an emergency room and see five people being treating for heart attacks, you are not going to assume that EVERYONE in the U.S. is having heart attacks right now.

Are you going to see people having issues with their machines or software in discussion forums? You bet! But to conclude from this that a systemic problem exists with that hardware or software is a faulty assumption.

Of the total number of this particular PowerMac model that have been sold, what percentage are experiencing the EXACT same issue resulting from the EXACT same cause? And yes, it has to be confirmed that it is the exact same cause behind the similar issues. Different culprits can manifest themselves in similar symptoms. And yes, it has to be a hard number percent, not some wild arse guess.

Once you have that solid number, how does it compare to Apple's acceptable failure rate? How does it compare to the industry's acceptable failure rate?

When you get solid answers to those questions, and not just hunches and suppositions based poor observations, then you will know if your conspiracy exists or not.

Until then, stop with the petitions and web sites. Move on with your lives.
Junior Member
Joined Oct 1999
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Apple has to get on this
0
08/09, 12:32am, EDT
It took me a few years to convert my friend and his wife to Apple. They finally took the plunge and got one of these freeze-fest PowerMac SP1.8.

Pisses me off, too, because Apple refuses to even acknowledge complaints. Their representatives all say "no... no reported problems that we've heard of." And if it weren't for my hanging out on MacNN, I would have never known that there are a good amount of people with the same exact machine experiencing what appears to be the same exact problems.

If any of you had ever experienced one of these freezing machines, you'd understand completely exactly why people are bitching.
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Joined Feb 2002
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I Understand...
0
08/09, 1:12am, EDT
I understand that when people have problems they get frustrated and angry and tend to over-simplify and exaggerate. I understand that when people feel they've been wronged (even when they haven't), they demand the world on a platter.
Junior Member
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Good Amount of People...
0
08/09, 1:15am, EDT
So what exactly is, "a good amount of people?" More importantly, what percent does, " a good amount of people," make up of the installed user base?

Quit generalizing and get some solid data.

(Proud owner of the exact same machine in question and never have suffered any of these issues–beyond mucking my own system.)
Junior Member
Joined Oct 1999
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Please Stand Up!
0
08/09, 6:28am, EDT
If you own one of these machines and not experiencing the problem? If you don't, then quit criticizing people who are having a problem. You are hardly in a position to do so. You are not in their shoes. I don't have that machine. So I'm taking an open mind approach as asking for people who have that machine, but not experiencing the problem.
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I am Jack's Powermac G5
0
08/09, 7:41am, EDT
I'm a recall coordinator. My job is to apply the formula. It's a story problem. A new car built by my company leaves somewhere traveling at 60 miles per hour. The rear differential locks up.The car crashes and burns with everyone trapped inside. Now: do we initiate a recall? Take the number of vehicles in the field, (A), and multiply it by the probable rate of failure, (B), then multiply the result by the average out-of-court settlement, (C). A times B times C equals X... If X is less than the cost of a recall, we don't do one.
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Joined Nov 2002
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In this case...
0
08/09, 8:28am, EDT
...the question "do you have a functioning single-processor G5 of this type?" is indeed valid. We ALL know that just as some cars have bad designs, some computers have bad designs. Remember the Mac Plus whack-on-the-side fix? Various Powerbooks? Mac SE 20-meg Miniscribe hard drives? (I might have the manufacturer mixed up, it's been a few years.) For that matter, while there might be a few people with 1995 Neons who haven't had their head gaskets replaced, or high-mileage 20th-century Ford Tauruses with original transmissions, or Toyota Coronas that didn't have severe rust-out, etc., etc., most did...

I went through the same discussion at http://www.toyoland.com/ with regard to sludge in Toyota Camry engines. People blamed the owners, said they were making it up, etc., etc. Turned out sludge in the oil was a pretty widespread problem, not affecting ALL of the cars, or even most of them...but if it happens to you, you get MAD when the company insists it never happens to anyone!

I'm perfectly willing to believe this; Apple lately has been fairly lax in their quality control (10.40 anyone? how about 10.0.0?).
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Failure Rate?
0
08/09, 6:10pm, EDT
Its not about failure rates (acceptable or not) and its not about owners with issues finding solice together on a forum. Its about INEXPLICABLE failures that the manufacturer denies.

"I tried for 5 minutes and it didn't happen to me. It must be your MONITOR" isn't a solution or "technical support". Its called "passing the buck." When I take a machine in because it isn't working, and it recieved completely new internals, and the "fixed" machine "works" (fails) in the exact same manner as before "repair" the statistical probability of this NOT being systemic is very low. And they don't believe me when I say it has never gone A DAY since I purchased it without crashing.

I don't care if there isn't another person with the same failure, I just know that my situation is NOT acceptable (even if the failure rate globally is below the rate needed to warrant a recall). But when I find out there are other people suffering with the EXACT same failures with ONLY the same machine, the suspicion of POOR DESIGN is 100% confirmed. The only common element between these exactly similar failures is the motherboard and CPU.
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Joined Dec 1999
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Yes it is true...
0
08/10, 7:26am, EDT
I have also one of this Mac's and can confirm, everything is true. The worst of all described errors, is the GUI freeze.
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Joined Aug 2005
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