WiFi randomly turning off or disconnecting (lenovo t540p, Ubuntu 14.04)

Question

I installed Ubuntu 14.04 on my lenovo t540p. Everything is working good, however, the wireless keeps turning off or disconnecting from time to time.

This is my iwconfig:

eth0      no wireless extensions.

lo        no wireless extensions.

wlan0     IEEE 802.11abgn  ESSID:"tanquetao"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 14:CF:E2:0D:88:30   
          Bit Rate=144.4 Mb/s   Tx-Power=22 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=44/70  Signal level=-66 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:66  Invalid misc:1324   Missed beacon:0

I would appreciate if anybody had some advice on how to fix this issue.

Please run the WiFi diagnostics and [edit] your question to include a link to its results. — David Foerster, Feb 28 '15 at 23:47

score 1 · Accepted Answer · edited Apr 13 '17 at 12:23

1

Disable Power Management

Bring interface down.
```
sudo ifconfig wlan0 down
```
Disable Power Management.
```
sudo iwconfig wlan0 power off
```
Bring the interface up again.
```
sudo ifconfig wlan0 up
```
If it works, make it permanent by putting it into script or through pm-utils.

Disable n

If you have intel type of wireless card, you might want to try disabling n-wireless.

edited Apr 13 '17 at 12:23

Community

1

answered Mar 04 '15 at 14:43

Sergiy Kolodyazhnyy

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Thanks for your reply! It did improved my internet concections. I also updated my kernel to the last version. Cheers – Gustavo B Paterno Mar 15 '15 at 02:31

WiFi randomly turning off or disconnecting (lenovo t540p, Ubuntu 14.04)

1 Answers1