TL-WN725N driver Ubuntu disconnect problem

[ghost]

I can't get my TL-WN725N WiFi USB adapter to work on Ubuntu. I tried every solution I found on internet and they didn't work. Description of the problem and my system is bellow. [Also asked on askedubuntu (http://askubuntu.com/questions/790525/tl-wn725n-driver-ubuntu-disconnect-problem)]

• Problem: WiFi connection works great when the machine starts for a minute or less, then WiFi connection disconnects and I am not able to manually start the interface with: "ifup wlxec086b0d080d"
• Log "/var/log/syslog" doesn't show any errors.
• Question: Is this a driver problem or some configuration problem. How to fix this?

System and configuration info

• Kernel version: Linux ubuntu 4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:27:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
• Kernel version: 4.4.0-24-generic
• Linux installed on virtual machine: Virtualbox Version 5.0.22 r108108 (Windows 7 Host)
• Ubuntu 16.04 LTS; Release: 16.04; Codename: xenial
• Wifi Nano USB adapter: TL-WN725N
• Driver installed according to this guide: http://brilliantlyeasy.com/ubuntu-linux-tl-wn725n-tp-link-version-2-wifi-driver-install/
• Driver installed correctly
• Added "blacklist r8188eu" to "/etc/modprobe.d/blacklist.conf" to disable loading of old driver.
• Network interfaces configured in "/etc/network/interfaces", configuration bellow:

auto lo

iface lo inet loopback


auto enp0s3

iface enp0s3 inet dhcp



auto wlxec086b0d080d

iface wlxec086b0d080d inet dhcp

    wpa-ssid AndroidAP

    wpa-psk ***censored***

• $ lsusb

Bus 001 Device 003: ID 0bda:8179 Realtek Semiconductor Corp. RTL8188EUS 802.11n Wireless Network Adapter

• $ ifconfig

wlxec086b0d080d Link encap:Ethernet HWaddr ::6b:0d:08:**

      inet addr:192.168.43.206  Bcast:192.168.43.255  Mask:255.255.255.0

      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

      RX packets:865 errors:0 dropped:18 overruns:0 frame:0

      TX packets:640 errors:0 dropped:1 overruns:0 carrier:0

      collisions:0 txqueuelen:1000 

      RX bytes:1075999 (1.0 MB)  TX bytes:83546 (83.5 KB)

• $ iwconfig

wlxec086b0d080d IEEE 802.11bgn ESSID:"AndroidAP" Nickname:"WIFI@REALTEK"

      Mode:Managed  Frequency:2.437 GHz  Access Point: **:11:**:2F:DF:**   

      Bit Rate:72.2 Mb/s   Sensitivity:0/0  

      Retry:off   RTS thr:off   Fragment thr:off

      Power Management:off

      Link Quality=99/100  Signal level=-40 dBm  Noise level=0 dBm

      Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0

      Tx excessive retries:0  Invalid misc:0   Missed beacon:0

• $ sudo lshw -C network

  *-network

   description: Wireless interface
  
   physical id: 1
  
   bus info: usb@1:2
  
   logical name: wlxec086b0d080d
  
   serial: **:**:6b:0d:08:**
  
   capabilities: ethernet physical wireless
  
   configuration: broadcast=yes driver=r8188eu ip=192.168.43.206 
  

  multicast=yes wireless=IEEE 802.11bgn

Thank you.

[runlevel5]

It's hard to tell, I am on Kernel 4.2.5 (on Arch though) and the dongle works perfectly. I think you should try to upgrade to 4.2.5 to see if it is the driver module or not.

[ghost]

Hi, You mean downgrade to 4.2.5? Because I'm on 4.4.0-24.

uname -a Linux ubuntu 4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:27:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

[runlevel5]

@pteroctopus sorry, my typo, it is 4.5.2

[ghost]

Installed the lastest kernel version. USB adapter didn't work at all: uname -a Linux ubuntu 4.6.3-040603-generic #201606241434 SMP Fri Jun 24 18:36:33 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

Then I installed lwfingers driver and it worked the same as before: less than half a minute and then the connection dropped.

Br,

[runlevel5]

I think what you could do is to install a different distro, like Arch and test it out. If the symptom still persist, then it is hardware fault.

[tnvrsingh]

I have the same problem on both 14.04 and 16.04. I got it to work on 14.04 but not on 16.04.

Followed the above mentioned guide and many others on the Ubuntu forums.

Its not a hardware fault because it works perfectly on Windows 10 and Windows 8.1 ( although the company provides these drivers).

[ssnikiforov]

I have the same problem. Ubuntu 16.04, kernel 4.4.0-47-generic.

[BruceBuckland]

I had a problem where I insert the TL-WN725N and Ubuntu finds it, and I connect to the network, and I get slow upload and download. (1mbps up, 4ish mbps down).

Then I reboot and I get 25mbps down and 11mbps up.

Other machines on the network get 90 mbps down and 11 mbps up (but I think the fact that this adapter does not do 802.11ac is why it is slower on the download).

I have NOT had the problem of the network adapter slowing... Machine has been up for 15 minutes... still reasonably performing. After it has been up for a day I will try unplug replug to see if i get the problem again.

[echipachenko]

The same problem Linux ***** 4.13.0-35-generic #39-Ubuntu SMP Mon Feb 12 11:06:39 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

[rrjanbiah]

Getting occasional disconnects and also speed is almost half (10mbps vs 20mbps)

4.15.0-142-generic #146~16.04.1-Ubuntu SMP Tue Apr 13 09:27:15 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux