- After a restart it seemed to have trouble finding the bluetooth mouse. It put up a warning note but it found it a few seconds later. I gather this is a known glitch.
- When I went to show the machine to Emily the screen saver started to stutter! I was going to tell her how trouble free things had been. It hasn't done this since, but there are known problems...
- There's an old glitch with MobileMe registration that probably impacts me and five other people.
Update 12/13/09: It is a weird problem, but I can't believe Apple hasn't known about it for weeks. I wonder if this is why none of the three local Apple outlets had an i5 on the floor. The flickering video would get quite a bit of attention! The issue has started to get trade pub attention, so I hope we'll get an Apple response this week.
Most recently, I'm finding that after an hour or two (on average) the zoom and pan transitions will start to stutter, with occasional violent jerks. If I move the mouse the screen is fine again. I haven't had this occur except during the screen saver shows because I've made so little use of the new machine. I'm reluctant to move it into production use since there's a good chance I'll have to return it in the next week or so - which will mean a full reinstall.
I'm betting this is a hardware defect and it will require a recall or a firmware "fix". I wouldn't be shocked if there were problems in more than one hardware component.
Sigh. I know better than to buy a new Apple machine. I was weak, and I'm only getting what I deserve.
Apple suggests ...
1. Verify if it occurs with an external display too. If it does (see separate chart)
2. Check all four cables for being damaged, pinched, etc...
3. If it still occurs shine bright (low heat) flashlight into front of LCD. Verify if an image is being displayed when flickering issue is occurring. If so, replace vertical sync cable (between LCD panel and upper end of LED backlight board) and retest.
If issue persists, replace LED backlight board.
If not, replace internal DisplayPort cable (between logic board and LCD panel), and retest.
For horizontal lines it says:
1. boot from dvd and see if it still does it, if not, it is a software issue
2. if it does still do it, check external display, if it does it there it is not the lcd, but could be the video card.
3. If video card is replaced and reseated and it still happens
4. Check ram by using only one module and testing with another available module.
5. If it still happens replace logic board.
... There seems to be at least two different defects. One is a software thing that the firmware update is supposed to fix, and another is the display cable coming loose internally - possibly during transfer, which is why the problem seems to be more common with CTO machines.
The software defect seems to be something in the settings getting corrupted. A PRAM reset can correct this, but if the defect is still there, it might happen again at any point. The firmware update is there to correct this defect, so a firmware update + PRAM reset can be a permanent fix. One big gotcha is that the wireless keyboard apparently cannot reset PRAM reliably, so you may need to do it with a wired keyboard. A Windows keyboard works fine, if you don't have a wired Mac keyboard - just hold the Windows key instead of Command and left Alt instead of option (so Windows-left Alt-P-R).
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