macbook not keeping wireless connection

[RangerJet]

Usually my macbook would always connect to the last wireless network I was on whenever I startup or just lift the monitor up. Of course the network changes if I go to a different house or hotel, etc.

But now I constantly have to pick the network to connect to over and over again every time I startup from sleep mode and such. I even deleted the networks I no longer use, but that didn't help.

Why would I have to keep choosing the network every time?

 

[cwa107]

Did you upgrade to Yosemite recently? This and other WiFi issues have plagued Yosemite since its release. Apple was supposed to have sorted them in 10.10.1, but there's still quite a bit of kerfuffle on the interwebs about it.

Hopefully that's not your issue, but could you clarify exactly which MacBook model you have an what version of OS X it's running?

 

[RangerJet]

Did you upgrade to Yosemite recently? This and other WiFi issues have plagued Yosemite since its release. Apple was supposed to have sorted them in 10.10.1, but there's still quite a bit of kerfuffle on the interwebs about it.

Hopefully that's not your issue, but could you clarify exactly which MacBook model you have an what version of OS X it's running?

No I did not upgrade to Yosemite yet.

I'll post the comp specs later, I'm not home now.
This happened suddenly also, not after an update or anything. Last night I installed a few updates, but the problem was still there this morning.

 

[MYmacROX]

I know you said you deleted the networks that you don't use, but have you tried deleting ALL networks? Clearing the list completely might help. just a suggestion...

 

[RangerJet]

I know you said you deleted the networks that you don't use, but have you tried deleting ALL networks? Clearing the list completely might help. just a suggestion...

I'll try that.

Here are specs:
Model Name: MacBook Pro
Model Identifier: MacBookPro9,2
Processor Name: Intel Core i5
Processor Speed: 2.5 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 3 MB
Memory: 8 GB
Am I missing anything?

Also, when I switch users I need to manually connecting the wireless network, even though I was already connected to it before I switched the user.

 

[cwa107]

Thank you, that helps.

In addition to deleting and readding all networks, I'd recommend a PRAM reset. Here's how to do it....

1. Turn off the Mac completely.
2. Turn it on and immediately press (and hold) Command + Option + P + R.
3. Continue holding until you hear the system chime 3 times.
4. Release and the machine should boot normally.

Hope that helps.

 

[RangerJet]

Thank you, that helps.

In addition to deleting and readding all networks, I'd recommend a PRAM reset. Here's how to do it....

1. Turn off the Mac completely.
2. Turn it on and immediately press (and hold) Command + Option + P + R.
3. Continue holding until you hear the system chime 3 times.
4. Release and the machine should boot normally.

Hope that helps.

Been busy, haven't tried that PRM reset yet, but another thing I noticed is
-if I have 2 users logged on and both connected to wireless.
-when I log off of 1 user, I have to re-select the wireless network on the other.

does that seem like a PRAM issue?

 

[Beatles4Life]

My MacBook Pro kept doing that too, and until about 3 days ago I thought it was Mavericks. Turned out the walls in my bedroom are thicker than I expected. I found this out when I opened my laptop from sleep mode in another room in my flat and it connected instantly.

I've also noticed that if I have my bedroom door slightly ajar it improves my chances of being able to pick up the wi-fi signal.

 

[RangerJet]

My MacBook Pro kept doing that too, and until about 3 days ago I thought it was Mavericks. Turned out the walls in my bedroom are thicker than I expected. I found this out when I opened my laptop from sleep mode in another room in my flat and it connected instantly.

I've also noticed that if I have my bedroom door slightly ajar it improves my chances of being able to pick up the wi-fi signal.

I don't think distance is the problem. I'm picking up my neighbors network from across the street as well as tons of others around me.