Auto reconnect after sleep, depends on brightness

Found this deep in 'weak wi-fi' thread and as it is not explicitly related to weakness of wi-fi signal decided to post it here. If you experiences auto-reconnect problem after waking up an Ipad and brightness was set to minimum try to move brightness slider a little bit to the right and try.
In my configuration dependency was 100%.

actually all credits should go to the original author (batgzam) here http://discussions.apple.com/thread.jspa?threadID=2391395&tstart=30
Apple should have been put this information to broad public - via this board, e-mail - whatever. Assume thousands people calling there support with regard to this particular problem and solution. Not giving this information to public means wasting hundreds thousand hours of their customers time and patience.

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Windows 7 brightness reverts back, wifi takes long to reconnect after sleep

Hi fellow members,
My brightness setting keeps reverting to max. I have tried setting via power manager and also from control panel.I can adjust but when the computer restarts, the brightnes reverts to max. It started happeing around a month ago. I didn't have these issues until about 2 months ago. I have had my x301 for over an year without issues.
Another issue I have been experiencing is that wifi takes a long time to reconnect after sleep. About 5 minutes. This is also a new issue.
I have the latest BIOS, latest power manager, all drivers are upto date. Here are the specs.
ThinkPad X301, 4GB, 13.3in 1440x900 LCD, Intel 4500MHD, Intel 802.11agn wireless, Bluetooth, 1Gb Ethernet, UltraNav,
Win7 Pro 32, Service Pack 1
Intel WiFi Link 5100 AGN
Driver Date: 8/3/2011
Driver Version 14.2.0.10
Video Card
Mobile Intel(R) 4 Series Express Chipset Family
Video Card Chip Type
Mobile Intel(R) 4 Series Express Chipset Family
Video Card Memory
1.26 GB
Video Card BIOS
Intel Video BIOS
Driver
c:\windows\system32\drivers\igdkmd32.sys
Driver Version
8.15.10.2555, 10-13-2011
Mobile Intel(R) 4 Series Express Chipset Family
Driver
c:\windows\system32\drivers\igdkmd32.sys
Driver Version
8.15.10.2555, 10-13-2011
BIOS
Vendor
LENOVO
Release Date
12/10/2010
BIOS Version String
6EET54WW (3.14 )
ROM Size
8.00 MB

Check in the Windows power profile for the brightness issue. Windows will apply it's own at boot, then Power Manager will override, which leads to a momentary discrepancy.
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

Wireless network does not automatically reconnect after sleep

I have a Belkin wireless G+ mimo modem router network. When I wake the mac from sleep it does not automatically reconnect to my wireless network and i have to manually select the network from the airport icon in the menu bar and then it connects without having to reenter my secure password. How do i set the mac to auto connect to the network after sleep? There are about 6 other wireless networks in range which may be effecting this reconnection.

In may case the network was already at the top of the preferred networks list.
Based of of a hint over at MacOSXhints.com, here's how I fixed this problem:
1. In the Network references pane, delete the Airport connection that does not like to reconnect.
2. Click Apply and Quit the System Prefs app.
3. Put the computer to sleep.
4. Wake the computer.
5. Go back in to the Network pref pane and re-add the Airport connection. Do not try to connect to the network at this time.
6. Click Apply and Quit the System Prefs app.
7. Use the Airport menubar app to connect to your network.
8. Verify connectivity
9. Put the computer to sleep.
10. Wake the computer.
11. Verify connectivity
My machine now consistently reconnects when coming out of sleep or restarting.
God luck!

Slow reconnect after sleep

My early 2006 iMac takes a long time to reconnect to my wireless network after sleeping. It finds the network no problem just takes up to a minute to "wake up" and find and join the network. Is there any way to speed up this process? My Macbook connects about ten times faster after coming out of sleep so it has to be something with the iMac and not the network.
Thanks for any help.
iMac Intel Core Duo 2gig. Mac OS X (10.4.9) 2Gig ram

ttt

Solution for 'my mac will not reconnect after sleep'

After lots of trial and errors I found the way around the problem of dropped or very poor wireless connection after you put your mac to sleep.
I have no idea what the problem really is but this procedure has stopped me from throwing my brand new MacBook through the window.
1) Go to System Preferences -> Network -> Advanced
2) Remove any network you have there memorized
3) uncheck option 'Remember any network this computer has joined' (leave the other options also unchecked)
4) press ok and switch AirPort off ... then on (make sure you have 'Show AirPort status in menu bar' checked)
Now the only real change we've made is to stop Mac memorizing our network - but here lies the solution.
Put your MacBook to sleep and than wake it up. It will not connect to the network (none are memorized) but all you have to do is choose your network name from the list on the menu bar. It might ask you for the key but in my case it simply asks for permission to use my KeyChain (memorized WPA2 password).
Once I press 'Allow' .... it works as it should! eureka!
Do not check 'Remember this network' when asked for password.
As long as Mac does not store your network details it reconnects without problems, once you allow it to store these details, re-connection after sleep goes pear-shape.... figure it out Apple!
I hope this might help you (as it most certainly works for me)
best regards
ffar

I've run Keychain utility. I also removed (as suggested in various places) any entries referring to my wireless password in KeyChain and allowed them to be memorized again. It doesn't change a thing.
Please understand me correctly. My Airport does re-establish connection automatically (if network details are stored) but connection is extremely flaky, slow and with frequent dropouts. So the Keychain is not to blame here (I think).
If I establish connection 'semi-manually', as described in my previous post, it is perfect, just as it should be. This would indicate to me that the problem lies not with the Keychain, but in the way OS stores network details.
If I do not allow OS to keep network details - re-connection works.

How to make trackpad automatically reconnect after sleep?

I have a magic trackpad and an MB Pro.
When I return to the computer after it has been sleeping overnight, the magic trackpad will not reconnect automatically. If the computer sleeps briefly, the connection is restored automatically. If the trackpad is powered off after sleep, it will reconnect when powered on. But after a long sleep, or perhaps when I have disconnected the laptop for a while I cannot easily make it reconnect.
It will not reconnect if: I click the power button, click the trackpad, select the trackpad by name and connect from the bluetooth menubar item, connect manually through bluetooth preferences, or turn off the trackpad entirely then turn it on again (force into discovery mode).
The only somewhat reliable way I have found to reconnect is: 1) turn off trackpad power, 2) go to trackpad preferences, 3) set up bluetooth device, 4) power on trackpad, 5) select continue when device is found.
When disconnected, in bluetooth preferences, the device is shown as being paired. I added it to Favorites. It is discoverable. Battery power is good.
I can reproduce the same symptoms with these steps: 1) put the computer to sleep, 2) manually turn off the trackpad, 3) turn on the trackpad again (it blinks, indicating attempt to discover), 4) wake the computer.
Can anyone help me find a less time-consuming way to re-establish a connection when the computer wakes from sleep?
Thanks,
Tom

Hi Jeff,
Thanks for the suggestion. I tried the 'root bridge' in Access Point mode but the remote devices did not try to reconnect. I also tried 'non-root bridge', 'root bridge with network clients', 'automatic' etc. I let it sit for a few minutes after each change to see if it helped.
I've going to change it to 'Access Point' again and leave it overnight to see if one of the three remote Workgroup Bridges that are currently unavailable will re-connect.
I know if I ask the site electricians to power the remote Workgroupd Bridges off and on they will connect for a while - its quite frustrating!
Thanks again
Richard Cronin

Problems auto-connecting after sleep & startup (Changed from WPA to WEP)

Okay, I know there have been several issues similar to this, but after two days of sifting through posts, I still can't resolve this.
A few days ago I switched my AirPort network security from WPA to WEP-128. This was required to allow my Nintendo DS to connect to the netwrok, by the way. After the change, two similar, but slightly different problems started:
My 15" PowerBook G4 no longer auto-connects to the network at startup. The network is listed in the drop-down, and connects with no problem when I choose it manually. The computer seems to have no problem re-connecting after waking from sleep, which is odd because...
My other PowerBook, a 12" G4, won't auto-connect at startup AND won't re-connect after sleep. As above, it has no problem connecting using the Keychain once the network is selected from the drop-down.
So far I have tried, on both machines:
- trashing the system airport prefs
- deleting and resetting the network's keychain entry
- repairing the keychain (no errors found)
- turning off some unneeded power mgt options
- disconnecting USB peripherals
I have also reloaded the software on both my AirPort Extreme base and my AirPort Express hub, as well as restarting both hubs. I've also made sure that AirPort is at the top of the network connection list.
Both laptops are running 10.4.3 and have all the latest software updates installed.
What am I missing?
Thanks.

Both of these replies are helpful, in that they help confirm something I figured out this morning, almost accidentally.
One thing I didn't mention was that during the change from WPA to WEP I changed the network password. Now, I assumed that since the Keychain seemed to be working and I could get on the network manually without needing to enter the password each time, that meant the new password had correctly propagated throughout the system.
So, this morning I go into the Network settings, switch from Automatic to Preferred, select my network, look at the properties, and notice that somehow it has way too many bullets for that to be the correct password. I re-entered the password and that seems to have solved the problem. The new password I had entered somehow didn't make it into this setting. I guess trashing the network prefs, or renaming the network would have had the same effect.

G50-45 Wifi takes 4 minutes to reconnect after sleep

Running Windows 8.1 Waking the laptop from sleep or hibernate causes the wifi not to connect right away, wifi is still connected and icon in taskbar show the wifi enabled but it takes like 4 minutes for the internet to work after sleep, get DNS errors form browser before it finally conects, I have done a Google search on this issue and have tried all the soulutions recommended and nothing seems to work. Some of the things I tried: Uncheck the power managerment to allow computer to turn off device.Update the BiosSet wifi to maximal performanceUpdated and installed optional Windows updatesNote: After I updated the Bios and installed optional Windows updates, it made the laptop a lot faster but still have the same problem with the wifi.

Hi Mrbell1970,
Welcome to Lenovo Community Forums!
Also Please try Turning ON
here's how to get to the option
http://www.dummies.com/how-to/content/activate-hybrid-sleep-on-windows-pcs.html
Let me know if this works for you
Regards
Solid Cruver

External hard-drive does not reconnect after sleep

Hi everyone
I am trying to use my Energy Saver to SLEEP my iMac after 1 hour. It goes to sleep no problem, but on wake-up, my external USB hard drive does not reconnect. There is also an error message that I didn't disconnect the drive properly. I fear this may be one of Mac OS X's "features". Has anyone encountered the same thing?
On a side note, I also find that my USB keyboard does not always reconnect as well. I use a windows USB mouse that I have connected to wake it from sleep, however my USB keyboard (the small one for Macs), sometimes does not allow me to type unless I unplug it and back in.
Another point of note is that both the HD and the keyboard are connected to the iMac through a 7 port USB hub.

r_dizzle wrote:
Another point of note is that both the HD and the keyboard are connected to the iMac through a 7 port USB hub.
I think this might be the issue. If the iMac is waking back up, it will likely be waking up this HUB, but the HUB might not be re-initialising the connection between OS X and the external drive or the keyboard.
After waking the iMac, if you unplug the external drive from the HUB, then plug it back in again, does OS X pick it up again? Have you tried plugging the external drive directly into the iMac and then testing what the result is?
If you read back on what you've said, you pointed out that you have a USB mouse that you use to wake the iMac from sleep. Is this mouse directly connected to the iMac? If so, it surely can't be a coincidence that a directly connected USB device can wake the iMac from sleep, but any USB devices connected to the iMac via a USB HUB cannot.
I would suggest you test the drive as it is directly connected to the iMac. I would complete the same test with the keyboard too. I think you'll find it's the USB HUB.
I hope this helps.

WiFi must manually reconnect after sleep (since updating to 10.9.4)

My MacBook Air (Mid 2011) just updated to 10.9.4 and now the WiFi doesn't reconnect to my home network when I resume from sleep (open the lid). I need to click the WiFi icon and re-choose the home network each time.
This is new since I updated. Ironically, when I read the update notes, it was supposedly to fix this type of issue from occurring in the first place, and yet I never had the problem until after I updated.
Thanks for any help you can provide.

Troubleshooting Wi-Fi issues in OS X
Wireless Connection Problems - Fix
Wireless Connection Problems - Fix (2)
Wireless Connection Problems - Fix (3)
Wireless Connection Problems - Fix (4)
Wireless Diagnostics - About
Also try turning off Bluetooth

Wireless slow reconnect after sleep.

After my laptop wakes from sleep it takes about 30 seconds for it to reconnect to my wireless network. Windows does this almost instantly. Is there any way I can get this to happen instantly?

Could be a timeout setting (I assume you're using NetworkManager). I have the same issue, but usually take the 15-30 seconds to think about what I'm going to accomplish next

Macbook Pro can't reconnect after sleep and wake-up

I didn't experience any kind of problem until now, but a few days ago when opening the lid on the Macbook it would fail to reconnect to the network.
I am getting the "auto-assigned IP" message and I need to turn the Airport OFF and then back ON again for it to connect properly.
A few more details about my Airport:
Software Versions:
Menu Extra: 6.2.1 (621.1)
configd plug-in: 6.2.3 (623.1)
System Profiler: 6.0 (600.9)
Network Preference: 6.2.1 (621.1)
AirPort Utility: 5.5.2 (552.11)
IO80211 Family: 3.1.2 (312)
Interfaces:
en1:
Card Type: AirPort Extreme (0x14E4, 0x8D)
Firmware Version: Broadcom BCM43xx 1.0 (5.10.131.36.1)
Locale: ETSI
Country Code: BE
Supported PHY Modes: 802.11 a/b/g/n
Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
Wake On Wireless: Supported
Status: Connected
Current Network Information:
mywirelessnetwork:
PHY Mode: 802.11g
BSSID: 0:19:70:49:c3:29
Channel: 5
Network Type: Infrastructure
Security: WPA2 Personal
Signal / Noise: -49 dBm / -88 dBm
Transmit Rate: 54
I tried restarting the machine a couple of times but it did not work. Otherwise I didn't seem to lose connectivity while connected/streaming/downloading and I hope this won't start happening.
I'd like to know if this is a hardware problem. My Mac is still under warranty, so in theory Apple should replace a faulty Airport.
I also got an iMac with 10.5 on it and a crappy Windows laptop that seem not to experience any issues. I could also connect to the network without trouble with my Android smartphone and some friends' laptops. It's just the Macbook that has problems.
Thank you.

You need to charge the computer, perhaps the battery went dead.
Do a SMC and PRAM reset, see if that assists.
Also hold the shift key after that upon boot, that will fix things
https://discussions.apple.com/docs/DOC-3046
If you get into your account, see if system preferences opens and try to set the time and date, align with Apple's servers, reset the screen saver and desktop picture see if it holds upon a reboot
If not your going to have to delete your
com.systempreferences.plist
file in your
"User"/Library/Preference folder
Reboot the machine and then open System Preferences and reset your preferences.
Now in 10.6, the "User"/Library/Preference folder is not hidden
In 10.7 the "Users"/Library/Preferences folder IS hidden
so in 10.7 you need to use the Finder > Go To Folder and type
/Library/Preferences
and click OK
Then scoll down to the file above, there will be two of them perhaps, one is a lock file the other one you can Trash, so do that and reboot.

Mbp wont reconnect after sleep

Used to be able to just put to sleep by closing cover and reopen. It would reconnect before I had it all the way open. Now I have to connect it manually every time. Only happens at some locations - other locations still work. Read somewhere about similar WiFi names but not sure that is the problem.

Hi Guy's,
I bought my MBP last Thursday and it was working fine until 2 days ago when I got the checkerboard after only a few minutes of use. Hardware check gave back the Failure code: 4SNS/1/40000000:'Tm0P' which I sent to Apple but no reply yet.
I'm bringing it back to the shop first thing tommorrow morning. I don't have time to wait a week or two for them to fix the problem especially if their "motherboards" all got the same hardware onboard. I haven't been able to spot any stories by Apple about this issue.
Looks like Apple has a QA issue with their ATI-X1600, or that the QA issue is ATI's all the way.
MBP 17" 2GB Mac OS X (10.4.7)

T440p wifi slow reconnect after sleep

Hi,
I have a T440p with the intel 7260AC wifi card. I recently upgraded my HDD to an SSD and did a clean windows 7 install. Now, when waking up from sleep, it alwas takes about a min before it reconnects to a wifi network. The reconnect used to be instantaneously.
I turned off the setting in power management of the Intel 7260AC to "allow the computer to turn off this device to save power". But this didn't solve the problem. I also have the latest intel wifi 7260AC drivers 17.0.2.5.
Anybody knows what could be causing this?

Did you also install Access Connections?
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

Wi-Fi Auto-Connect after Sleep

I have a Linksys router (WRT54G2) at home which we use for our home network. When my iPhone 3G (3.1.2) wakes up from sleep it recognizes the 3G network. It then takes approximately 15 seconds for it to auto-connect to our wi-fi network. Why is that?

It shouldn't take that long, you could try and reset your network settings & see if it connects quicker.
Settings>General>Reset>Reset Network Settings
or
Reset the phone itself:
Press the sleep/wake button & home button at same time, keep pressing until the apple logo appears then release, ignore the slide to power off.

Auto reconnect after sleep, depends on brightness

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