Arch Linux

Duxon

Member

Registered: 2010-12-01

Posts: 41

TP-Link AC1200 Wireless USB Adapter stopped working

Hi,

I've got a TP-LINK AC1200 Dual Band Wireless AC USB device. Its driver isn't implemented into the Kernel yet, but there's an AUR package that helped me. Until today.
I had to use linux-lts, because the kernel module has not been loaded since upgrading to 3.18.
As suggested by User vsurrel I tried to modify the build source URL to his github fork. From that time on I cannot bring my WiFi back to life.

Of course I just tried to uninstall and rebuild the former package and everything looks nice, but it doesn't help. I'm very thankful for any advice.

duxon@hubert: sudo pacman -U rtl8812au-dkms-4.2.2.7502.20130517-1-x86_64.pkg.tar.xz
[...]
(1/1) installing rtl8812au-dkms                                                                                 [###################################################################] 100%

Creating symlink /var/lib/dkms/rtl8812au/4.2.2.7502.20130517/source ->
                 /usr/src/rtl8812au-4.2.2.7502.20130517

DKMS: add completed.

Kernel preparation unnecessary for this kernel.  Skipping...

Building module:
cleaning build area....
make KERNELRELEASE=3.14.36-1-lts -C /usr/lib/modules/3.14.36-1-lts/build M=/var/lib/dkms/rtl8812au/4.2.2.7502.20130517/build..................
cleaning build area....
Kernel cleanup unnecessary for this kernel.  Skipping...

DKMS: build completed.

8812au.ko:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /usr/lib/modules/3.14.36-1-lts/kernel/drivers/net/wireless/

depmod....

DKMS: install completed.

The module is being loaded. I'm booting the correct kernel. The device still won't appear. What am I missing?

duxon@hubert: lsmod | grep 8812                                                 
8812au                997719  0 
cfg80211              448576  1 8812au
usbcore               188392  10 btusb,snd_usb_audio,uvcvideo,ohci_hcd,ohci_pci,snd_usbmidi_lib,ehci_hcd,ehci_pci,usbhid,8812au

duxon@hubert: dmesg | grep 8812           
[   14.740984] usbcore: registered new interface driver rtl8812au

duxon@hubert: uname -a 
Linux hubert 3.14.36-1-lts #1 SMP Wed Mar 18 18:15:02 CET 2015 x86_64 GNU/Linux

duxon@hubert: iwconfig 
eth0      no wireless extensions.

lo        no wireless extensions.

Last edited by Duxon (2015-05-14 08:07:14)

Duxon

Member

Registered: 2010-12-01

Posts: 41

Re: TP-Link AC1200 Wireless USB Adapter stopped working

My USB Adapter is still not working.
Are there no ideas at all? I'd even be happy to see a link to a resource where I can read about how to theoretically properly engage this situation.

wtx

Member

Registered: 2014-06-09

Posts: 90

Re: TP-Link AC1200 Wireless USB Adapter stopped working

What shows: lsusb ? Have you tried to unplug and plug again the usb adapter?

Last edited by wtx (2015-04-04 14:17:54)

Duxon

Member

Registered: 2010-12-01

Posts: 41

Re: TP-Link AC1200 Wireless USB Adapter stopped working

$ lsusb 

doesn't list my device. And yes, I've certainly tested all USB ports on my machine. This shouldn't matter though, because it has been working before I build the module from vsurrel's source. The weird thing is that it's broken after reinstallation. Could there be any traces even when I uninstalled using

# pacman -R

?

wtx

Member

Registered: 2014-06-09

Posts: 90

Re: TP-Link AC1200 Wireless USB Adapter stopped working

I think that the first thing what should be done is to achieve list of this device in lsusb, because lsusb shows what linux kernel sees. The second thing is to load the driver for this device (lsusb should list this device even you don't have driver installed).

So first check if this device is recognizable by another PC or OS (windows?) and if you are sure that it is working fine - you may looks for another reasons like problems with driver.

Duxon

Member

Registered: 2010-12-01

Posts: 41

Re: TP-Link AC1200 Wireless USB Adapter stopped working

Oh man, I've tried with my laptop and found another package in AUR: https://aur.archlinux.org/packages/rtl8812au-git-dkms/
This worked so I went back to my desktop PC: Success!

Thanks wtx for giving me a little push.

Raqua

Member

Registered: 2007-11-24

Posts: 148

Re: TP-Link AC1200 Wireless USB Adapter stopped working

Stopped working on kernel 4.0

pwlandoll

Member

Registered: 2015-05-14

Posts: 2

Re: TP-Link AC1200 Wireless USB Adapter stopped working

Will this driver be added to the kernel in the near future? If not, what's the kernel 4.0+ solution?

Duxon

Member

Registered: 2010-12-01

Posts: 41

Re: TP-Link AC1200 Wireless USB Adapter stopped working

I don't know unfortunately, thus changed the thread back to not solved.

pwlandoll

Member

Registered: 2015-05-14

Posts: 2

Re: TP-Link AC1200 Wireless USB Adapter stopped working

I looked at the AUR page again and it looked like it had been updated, so I gave it a shot. Seems to work well on kernel 4.0.4.