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I am using Ubuntu 16.04 LTS on a 64 bit computer and I am trying for days to run the driver for the Wlan USB adapter TL-WN725N (v2.2). Just switched to Linux so I am a total Newbie.

I used a lot of instructions which I found on the internet (like this or this) but non of them worked. I really can't figure out what the problem is.

lsusb:

Bus 002 Device 004: ID 0bda:8179 Realtek Semiconductor Corp. RTL8188EUS 802.11n Wireless Network Adapter  
Bus 002 Device 003: ID 0bda:0181 Realtek Semiconductor Corp.   
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub  
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub  
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub  
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub  
Bus 001 Device 004: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)  
Bus 001 Device 003: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for 
Bluetooth   
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub  
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub>

modprobe 8188eu:

modprobe: ERROR: could not insert '8188eu': Operation not permitted

When I try this solution it tells me:

git clone https://github.com/lwfinger/rtl8188eu
fatal: Zielpfad 'rtl8188eu' existiert bereits und ist kein leeres Verzeichnis.

(its german, in english its: destination path 'rtl8188eu'already exists and is no empty directory)

David Foerster
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Henner
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    Please edit your question to add the result of these terminal commands: lsusb and also: sudo modprobe 8188eu. Welcome to askubuntu. – chili555 Oct 06 '16 at 15:54
  • I tried but failed – Henner Oct 06 '16 at 16:56
  • @Henner Try my answer, please tell me if you succeed. I'm waiting in case you need help. – Emad Arshad Alam Oct 06 '16 at 16:58
  • Git's error message is actually quite specific about the issue. Just (re-)move the existing non-empty existing directory rtl8188eu. By the way, you can make most programs print English messages by prefixing the command with LC_MESSAGES=POSIX, e. g. LC_MESSAGES=POSIX free. Works the same for graphical applications. With super-user privileges you need sudo LC_MESSAGES=POSIX apt ... or gksudo env LC_MESSAGES=POSIX synaptic (for graphical applications). – David Foerster Oct 07 '16 at 11:04

2 Answers2

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You can install the driver this way:

sudo add-apt-repository ppa:hanipouspilot/rtlwifi
sudo apt update
sudo apt install rtl8192eu-dkms

You need to disable Secure Boot if you are using UEFI.

Pilot6
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  • You made my day! After hours of trying it finally works. Thanks a lot and have a nice day =) – Henner Oct 06 '16 at 19:58
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You can download the driver from here. Choose the driver for linux. Install the driver by changing your directory to the driver and then typing the following commands

sudo make

sudo make install.

Detailed installation instructions are given in the zip file ( which has to be extracted first).

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Emad Arshad Alam
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