The wlan connection of my iMac suddenly loses

Hello communitie,
for a couple of days the wlan connection of my iMac has suddenly lost.
Everything is well again after deactivate and activate the airport again for an uncertain time.
Best regards
Kcuhen89

I'm having the same problem with my new macbook pro (early 2011) with newest mac os. I use my business laptop (windows) on the same wlan with no connection problems...
Any help???
Regards
Tom

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I cannot retrieve the password for the wifi connection on my imac and so cannot access the internet with my ipad at home. I have a cable modem. Help please!

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If you mean that you cannot remember the password for your WiFi network this will work for you - or it should work if you are the administrator on the Mac.
You will need to be logged in as the administrator on your Mac and you must know the password - Open Keychain Access on your Mac in the utilities folder, click on Passwords. Find the Airport Network Password listed on the right. Double click on it. Click on show password in the the window that pops up. Enter your administrator password when prompted and click allow.
If Keychain is locked - you must enter the administrator password there as well to unlock it and access the password.
If you have set the Mac up for Internet Sharing for the iPad to share the Mac's connection, just create a new network On the Mac with Internet sharing and a new password.

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Landshark2007 wrote:
We have identified that 4.2.1 in the iPhone 4 has WPA2 key length issues.
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Landshark2007 wrote:
There is also one other school of thought that we have which is to do with the increased battery performance on the iPhones. It looks as though the iPhone drops WiFi when it goes to sleep (ie: when it is turned off in normal mode).
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I have a problem with an WRT54GL Router. It keeps losing the Wlan connection. Then I have to reboot the router to get it working again.
On some days everything works fine, and the other day I have to reboot every 5 minutes.
I don´t use P2P. So there are not many simultaneous connections. Mostly there are only one or two Wlan Clients active.
Between the Router and the Client is only one Wall. Signal Strenght is at all times above 85%.
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Click on this link for the instruction.

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Sometimes my computer will connect and detect wireless networks, airports hotels etc but will not work at home and in some ofices.
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Me again, sorry: Since I own the N97, it happens very often, that it looses the WLAN connection at my home network, without any reason. The icon remains, when I point to it, it says that it found the network, but when I choose connect, it doesn't work. I always have to restart the device, then it works ok, maybe for more than one day, but suddenly - again it stops working, but I cannot see any action from my side which causes this.
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What message do you get? Look for running apps in the background that uses WLAN. What puzzels me, is why it's getting worse after hours. Look if the phone is registered (MAC address) in the router or AP.
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Dear forum
I use a Lenovo ThinkPad X220. I have no trouble with the wlan connection when i use the notebook alone. The wlan connection is also stable when i use the notebook plugged in the dockingstation with the lid open. But when I use the notebook plugged in the dockingstation with the lid closed my wlan connection drops regularely to about 2 Mbps and gets very unstable.
The ThinkPad uses the Intel Centrino Advanced-N 6205 wlan network controller:
$ lspci | grep 6205
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34)
The network controller uses the iwlwifi driver, that comes with the current linux-firmware package:
$ pacman -Ss linux-firmware
core/linux-firmware 20150206.17657c3-1 [Installiert]
Firmware files for Linux
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$ modinfo -p iwlwifi
swcrypto:using crypto in software (default 0 [hardware]) (int)
11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX (uint)
amsdu_size_8K:enable 8K amsdu size (default 0) (int)
fw_restart:restart firmware in case of error (default true) (bool)
antenna_coupling:specify antenna coupling in dB (default: 0 dB) (int)
wd_disable:Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1) (int)
nvm_file:NVM file name (charp)
uapsd_disable:disable U-APSD functionality (default: Y) (bool)
bt_coex_active:enable wifi/bt co-exist (default: enable) (bool)
led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0) (int)
power_save:enable WiFi power management (default: disable) (bool)
power_level:default power save level (range from 1 - 5, default: 1) (int)
fw_monitor:firmware monitor - to debug FW (default: false - needs lots of memory) (bool)
At first I thought, the problem could be caused by the KDE power saving settings. I changed the settings, so nothing happens when I close the lid (no hibbernation or screen lock or something like that), but without success (the wlan connection is still unstable under the described circumstances).
Also dmesg shows nothing that points out a problem (as far as I can see):
$ dmesg | grep iwlwifi
[ 19.688522] iwlwifi 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[ 19.688679] iwlwifi 0000:03:00.0: irq 31 for MSI/MSI-X
[ 19.696095] iwlwifi 0000:03:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm
[ 19.718023] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled
[ 19.718027] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS disabled
[ 19.718028] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[ 19.718029] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Advanced-N 6205 AGN, REV=0xB0
[ 19.718145] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 19.753757] iwlwifi 0000:03:00.0 wlp3s0: renamed from wlan0
[ 20.128443] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 20.128652] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[ 20.403905] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 20.404212] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
[ 68.922975] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled
[ 68.923192] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
So I have no idea where this strange behaviour comes from (only wild guesses: buildfactor, antenna orientation,...).
Any help would be really appreciated.

hmmm...
how about checking both your wired and wireless nic drivers in device manager to make sure that the "allow computer to turn off this device to save power" checkbox on the power management tab is deselected.
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Wlan connection slow

Hi,
since a few days I have big problems with the WLAN-connection of my late 2011 13" Macbook Pro that leads to very slow Intenet Connections and Slow SMB-Server access.
In Detail: If I will open a Webpage it will take 50 times longer then from my iPad or Windows PC; and I run an Windows 2012 Server as an Data Pool, if I will access to any Remote Hard disk the Mac will need 5-10 sec. to load a Folder (the Windows PC loads it directly after the "klick").
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Does anybody have a Idea to Solve this Problem? I run Mountain Lion in the latest Version, nothing has changed the System since or before the Error occured.
Thanks....

Yeah there is....
CCX - AironetIe Support.......................... Enabled <-- disable this
DTIM period for 802.11a radio.................... 1<--change to 2
DTIM period for 802.11b radio.................... 1<--change to 2
   Wi-Fi Protected Access (WPA/WPA2)............. Enabled
      WPA (SSN IE)............................... Enabled <-- disable this
         TKIP Cipher............................. Enabled <-- disable this
         AES Cipher.............................. Enabled <-- disable this
      WPA2 (RSN IE).............................. Enabled
         TKIP Cipher............................. Enabled <-- disable this
         AES Cipher.............................. Enabled
      Auth Key Management
         802.1x.................................. Disabled
         PSK..................................... Enabled
         CCKM.................................... Disabled
Swotch configuration should look like this:
description connection to wlc port 1
switchport trunk encapsulation dot1q
switchport trunk native vlan 9
switchport trunk native allowed vlan 9
switchport mode trunk
description connection to wlc port 2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 99
switchport mode trunk
description connection to wlc port 3
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 103
switchport mode trunk
description connection to wlc port 4
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 102
switchport mode trunk
description connection to wlc port 5
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 100
switchport mode trunk
description connection to wlc port 6
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 101
switchport mode trunk
Thanks,
Scott
Help out other by using the rating system and marking answered questions as "Answered"

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Hi
The same happened on my old notebook.
I was not able to establish the WLan connection for longer than 1min with WPA encryption.
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hi,
have you found a solution? I have nearly the same problem now...
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I have had connection problems with my L650 Toshiba for the past couple of months.
I bought my laptop a year ago (October 2010), and everything was working perfectly until April 2011.
The first few months, my computer would connect automatically to the internet once it started up.
Since April 2011, my computer takes about 2 minutes to connect to a wireless internet connection when I start it up, whether it is my home connection or work connection.
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The problem does not come from a wireless router because it happens with all wireless connections. Furthermore, I have tried updating the drivers for the wireless adapter (Broadcom 802.11n) with no success at all.
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Hi.
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2 - Using the E-mail option at the menu, I type my gmail user, my password, and then nothing happens.
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Can I connect a PC via LAN to my WLAN - connected time capsule?

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I haven't found any info on this in the forums yet:
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My WLAN - router is located in my living room and has loads of devices connected (iPhone, iPad, 2 Zeppelin Air, MacBook Air, some other Win - PCs etc...)
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The wlan connection of my iMac suddenly loses

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