Mac laptops : MacBook Pro Drops Connection after Snow Leopard upgrade...
MacBook Pro Drops Connection after Snow Leopard upgrade...
by luisp--2008 - 9/3/09 9:48 AMSo I took the plunge and giddily purchased Mac OS 10.6 aka Snow Leopard the day it was made available. Usually, I have very little worries being an early adopter to new OS releases considering the successful upgrade experiences I've had through the years of being a Mac user.
Not so today.
After upgrading to Snow Leopard from 10.5.8, my MacBook Pro 17" (2.6 GHz, 4GB RAM, 200GB @7200 RPM HDD, non-unibody) would consistently drop it's internet connection whether it was via Ethernet (wired) or through AirPort (wired and wireless are using DHCP). I've applied several supposed fixes suggested everywhere on the Googled web with limited success:
* Reset Network settings, deleted "Automatic" settings and created a new setting (called untitled)
* Zap the PRAM (hold Command+Option+P+R on restart)
* Flush the DNS cache(using: dscacheutil -flushcache on the Terminal)
These 'fixes' worked only for a few minutes, and the internet connection would eventually drop again. NOTE: Although other computers and drives were visible on my network, and Instant Messaging via Adium is still functional, which is weird, I could not connect to the internet through a browser, or connect Mail.app or even to the iTunes store.
Tired and frustrated at this point, I decided to finally call Apple Support (Case #134733179) and was suggested to try the following steps:
* Shutdown the MacBook Pro, remove battery, disconnect the power, and then hold the Power Key for 15 seconds. After which I was told to replace the battery, reconnect power and zap PRAM and wait for 2 chimes before letting the keys go.
I was able to get connection for a while but lost it again after a few minutes of usability.
And so I called again and was told this time to try:
* Trash the SystemConfiguration folder (~/Library/Preferences/SystemConfiguration) and all of it's contents... then reboot.
The above suggestion seemed logical as it would obliterate any existing preferences that may be corrupted and affecting the connection setup. The system would then recreate a fresh preference file free of any lingering old settings. This again worked for a while, but sadly, my wired and wireless connection both drops within a few minutes of usage. It is also worth noting that simply restarting the MacBook Pro regains connectivity as well but drops after a few minutes on both Ethernet and Airport settings.
So today has been an unproductive day considering I spent all my efforts troubleshooting Snow Leopard (10.6) on the MacBook Pro, and couple that with the inability to use several key functionality such as SynergyKM to sync all three machines I have with one keyboard/mouse (not to mention the unpredictable behavior Adobe CS3 has been displaying (especially InDesign losing menus and drawing blank palettes!) and the loss of Letterbox's (plugin) features on Mail.app) and I am now forced to downgrade back to 10.5.8 via Time Machine Restore until Apple resolves or acknowledges this problem (or some knowledgable individual throws this dog a bone and help me out of this misery).
In the meantime, I need to get work done and something as fundamental as a stable internet connection should have been high on Apple's "must work" priority list.
Sigh... would have been nice if it worked without glitches...
I'm having power issues
by BeatleMegaFan - 9/3/09 4:44 PM In reply to: MacBook Pro Drops Connection after Snow Leopard upgrade... by luisp--2008while some report performance boosts in that area. Not good for me. My MacBook Pro, a 2007 model, is quite faster though, and my internet connections are faster than ever and have not dropped at all since the upgrade. It would appear there are a handful of problems for Apple to deal with. I'd prefer to see some patches sooner rather than later...
Same problem for iMac
by dheiser - 9/3/09 11:05 PM In reply to: MacBook Pro Drops Connection after Snow Leopard upgrade... by luisp--2008My iMac is giving me the same symptoms after upgrading to 10.6.
I'm using AT&T; the connection works for a minute and then I get three red lights on Network Diagnostics.
I can move the Ethernet plug to my Windows laptop and it works fine.
I'm not using a router.
Modem?
by johnlh - 9/4/09 8:48 AM In reply to: MacBook Pro Drops Connection after Snow Leopard upgrade... by luisp--2008Have you ruled out a modem problem? Reset the modem and even change the password which is stored in the modem if necessary. May not help but you never know.
Doesn't seem to be a modem problem...
by luisp--2008 - 9/4/09 9:17 AM In reply to: Modem? by johnlhThanks for the tip, tried it at home and reset the modem (which is connected to an Aiport Extreme) and no dice. Same goes when the MacBook Pro is at work which uses ethernet or wifi via company LAN. BTW, I do get connection for a while, but then drops...
Removing battery?
by jennywren1420 - 9/4/09 10:55 PM In reply to: MacBook Pro Drops Connection after Snow Leopard upgrade... by luisp--2008You were advised to remove the battery and replace it. It sounds as though you are lucky not to have one of the new MacBook Pros, since the battery cannot be readily removed by the owner. I confess that is one of the main stumbling blocks for me when I think of getting a new laptop. (I would use it on AC power, most of the time, anyway, as a replacement for a desktop.) Now I am even less keen, because by the time I get to having a new laptop, Snow Leopard will most likely be the OS on it.
How I wish that Apple would go back to removeable batteries. Gone are the days when one could pack an extra battery for travel or just replace the one in the computer easily, if something went wrong. Well, that is not entirely relevant to your problem, but it is certainly an issue, if removing the battery won't work for people with the new MacBook Pros, yet that is what Apple is advising for your problem with Snow Leopard.
You are posting a reply to: MacBook Pro Drops Connection aft
by edelente - 9/20/09 5:08 AM In reply to: MacBook Pro Drops Connection after Snow Leopard upgrade... by luisp--2008I'm having the same problem. Oddly, IE 7 running on VMWare through a NAT connection on the very same Mac Book Pro works without fail, even while the Mac browsers are telling me that I am not connected to the Internet. If I quit Safari or Firefox running on the Mac side, I can click around a few times within a single domain, but as soon I try to go somewhere else, the connection drops. Anybody have any luck correcting this?
(NT) Try resetting Safari
by mrmacfixit
- 9/20/09 9:29 AM
In reply to: You are posting a reply to: MacBook Pro Drops Connection aft by edelente
Try Resetting Saffari
by edelente - 9/20/09 10:43 AM In reply to: (NT) Try resetting Safari by mrmacfixit
Thanks - I did that, both Safari and Netscape, as well as all of the fixes listed above from Apple Support, without success.
MacBook Pro Drops Connection after Snow Leopard upgrade...
by edelente - 9/20/09 11:52 AM In reply to: MacBook Pro Drops Connection after Snow Leopard upgrade... by luisp--2008After trying everything else, I found that my Timecapsule / Airport was one update behind. Although I did run into a few bumps updating the firmware from 7.4.1 to 7.4.2, this appeared to solve the problem and I'm connected again. Not sure if this is relevant to the situation of others here, but it hopefully provides a hint at least.
A possible fix
by kanchanbnz - 9/27/09 12:45 AM In reply to: MacBook Pro Drops Connection after Snow Leopard upgrade... by luisp--2008Hi,
I'm running a MB-Pro 15", and ungraded to snow leopard this afternoon.
My MBP recognised the wireless modem, but was not connecting to the internet.
I rang my ISP, and they identified the problem. He made me check my TCP/IPs - all okay for my modem;
My DNS server was the problem.
Check your DNS servers. Mine had changed to something weird. He talked me through what my DNS should have been.
Presto, it worked.
Cheers
weird DNS?
by macnerd10 - 9/27/09 10:50 AM In reply to: A possible fix by kanchanbnzHope it is not a DNSChanger Trojan. You might like to download a free version of MacScan and scan the computer. If DNS has a number 85 (I guess) in it, it may be bad and needs removal. Simply putting the new one in does not remove it. Hope this is not the case but may be worth checking.
Network problems Snow leopard
by jscott418 - 10/11/09 7:52 AM In reply to: MacBook Pro Drops Connection after Snow Leopard upgrade... by luisp--2008I too am having the same problem on two Mac's. The Airport indicates I am connected to my local network. But Internet is not available. I have tried another browser ( Firefox 3.5) and it has the same problem. I have also tried the solutions on Apple's forums and like others It did not permanently solve the problem. As both a Mac and PC household I seem to remember Vista having the same issues when first released with certain routers not able to handle the extra traffic that Vista had added to its network connection. Seems like the mention of disabling the IVP6 was also talked about. But in the end many simply had to upgrade their router if it did not have a firmware update to fix it. Not sure if that's the case here because I have turned off IVP6 and still am having the problem.
One thing is for certain that Snow Leopard is to blame because nothing has changed.
iMac wifi connectivity instability after Snow Leopard
by leekaygraphics - 10/21/09 4:40 PM In reply to: Network problems Snow leopard by jscott418My new iMac worked almost perfectly for its' 1st 7 months w/ 10.5, but ever since SL it's extremely inconsistent accessing wifi. As w/ jscott418, Airport indicates full connection, but I simultaneously get the 'Not Connected to Internet' screen, from between every few minutes to several times an hour. Back & forth w/ at&t ( resetting 2 Wire 2701 HG Gateway router, less than 2 yrs old) & Apple. Rearranged DSL access list in Airport Network Prefs, got ethernet cable to test that (ethernet works fine), next is to lug iMac to Apple store tomorrow for service. Funny part is I can sit directly in front of iMac while it can't access wifi, but the iPhone in my hand does pick up full wifi from the very same router. 2 other new Windows laptops in the house are having no wifi problems.
Update to my previous post
by leekaygraphics - 11/3/09 6:39 PM In reply to: iMac wifi connectivity instability after Snow Leopard by leekaygraphics2 Apple engineers from Cupertino (like a visit from royalty!!! -fortunately in my area for someone else) were at my house last week troubleshooting for 3 hrs! They were very professional & helpful. Determined that the at&t 2Wire Gateway 2701HG-B router was dropping outgoing signal. They did data capture tests & showed me screen image indicating strong incoming DSL, but unstable outgoing from the router portion. Said they've heard of lots of similar issues w/ that modem/router which at&t still provides to new DSL account customers. They suggested I disable the router portion & hookup with new Airport Extreme router (or any newer router). Did it last night, so far no more unstable wifi! AE even works great for the Vista laptops here, altho they are type 'g' versus my iMac being type 'n'. It sends out separate signals for each type. Apparently the Snow Leopard timing was merely a weird coincidence. Whatever, I'm very happy w/ Apple again.
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