It's as if the LED backlighting is not turned on for columns of the screen. The top is lit normally, but at the bottom of the screen, extending up from the dock, there are dark and light sections.
No.
Yes, I do! I noticed immediately after the update. I've seen it infrequently before, and it was always resolved by a restart. If I restart without the power cord plugged in, it seems fine. If I restart with power connected, I see the dark streaks. Just as you say, it's like alternating columns of the backlight turned off. Interestingly, the display is fine when the system is immediately started, during the gray boot screen. Just before the login screen the streaks appear.
Here's my system details:
Model Name: MacBook Pro
Model Identifier: MacBookPro4,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 4 GB
Bus Speed: 800 MHz
Boot ROM Version: MBP41.00C1.B03
SMC Version (system): 1.27f3
Anyone else who has the issue, please confirm your system details too (as well as any possible resolution).
Update: I reset my PRAM and the problem seems to be resolved (for now). 🙂
See this support article if you're not sure how to reset your PRAM:
Just updated mine...no problems here.
Model Name: MacBook Pro
Model Identifier: MacBookPro8,1
Processor Name: Intel Core i5
Processor Speed: 2.3 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 3 MB
Memory: 4 GB
Boot ROM Version: MBP81.0047.B0E
SMC Version (system): 1.68f96
Yes I have the same problem.
After updating the software my screen had the uplighting effect at the bottom of the screen.
This makes me believe its a software issue and not a hardware problem.
I have never had this issue before.
I bought this mac about 3 years ago. I did replaced the screen last month it was under warranty.
Warranty is now over. Crap
I did perform the shift-control-eject and it fixed the problem.
I rebooted my machine and did the PRAM command and it still appeared.
I rebooted again and it went away.
This is not good.
Hardware Overview:
Model Name: MacBook Pro
Model Identifier: MacBookPro4,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.6 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 4 GB
Bus Speed: 800 MHz
Boot ROM Version: MBP41.00C1.B03
SMC Version (system): 1.27f3
Yes, I had the same thing on my MacBookPro4,1
At first I thought it was a new background or something, since it looked like curtains.
A restart seemed to fix it, but now I'm worried about it happening again.
This had never happened before the 10.6.8 update.
It was a problem that many 4,1 MBPs had since the beginning.
http://www.mobilemag.com/2008/04/01/penryn-macbook-pro-has-led-backlight-problem s/
https://discussions.apple.com/thread/1423301?threadID=1423301&tstart=0
Mine didn't show itself until a year later. It happens intermittently, but often it happens when I update OSX. Somtimes after rebooting to Boot Camp. Usually zapping the PRAM will fix for me. (Temporarily, obviously.) But I've lived with this for the past two years, even having two repairs and still it'll happen. (Fortunately I had Applecare, for the repairs, but that just ran out.)
(edit: Apple had known about and "fixed" this back in 10.5.3, which I remember applying for this specific reason:
http://support.apple.com/kb/TS1258
But it seems like each new OSX update "breaks" it again. 😟 )
I had this on my MacBookPro4,1 after installing 10.6.8. I reset the SMC (http://support.apple.com/kb/ht3964) and it's fixed.
Thanks everyone! Resetting the PRAM as described helped me too. This is the first time I've experienced this issue.
Yes, I had exactly the same thing happening on my MacBookPro4,1
Only reseting SMC seemed to fix it, but now I'm worried about it happening again.
This had never happened before the 10.6.8 update.
Cheers
Yup, my 24 inch iMac has so much ghosting, i can read text from a previous text document when im on a photoshop document. Ahhhhh.
Yup, MacBook Pro 13", Oct 2010 purchase, not the slightest chance of even starting the system after the update, had to reinstall twice cos the first one failed. DONT UPDATE!!
Having the same problem with alternating light bars on restarts. Started after 10.6.8 Combo Update. Have reset the SMC and PRAM as discussed above. Sometimes restarts OK and sometimes not. If it occurs, closing the lid to put the laptop to sleep and then opening the lid again, makes screen OK upon waking. Must be a software issue as intro grey Apple screen is always at full illumination but streaks appear after Desktop becomes visible.
Apple needs to be made aware of this issue. Rarely had this problem before 10.6.8. Restart always solved this before.
MacBookPro4,1
Just happened, have no idea why.
15" MacBook Pro OS 10.7.5.
This old advice worked for me:
(edit: Apple had known about and "fixed" this back in 10.5.3, which I remember applying for this specific reason:
Does anyone else have streaks on their MacBook Pro display after 10.6.8 update?
