[SOLVED] TPLINK T4U V2 - chipset RTL8812AU drops connection

sayusi · n00b Joined: 10 Aug 2006 Posts: 26 Location: Hungary

Hi All,

I bought this TP-Link T4U USB Wifi adapter because after some re-org in my flat there is no way to have cable connection between my desktop and router.

I installed the driver successfully following this tutorial. I would like to continue gentoo install by sshing from my laptop to the desktop sitting on my armchair. I experience that the desktop drops connection after a while and I have to restart the net.wlp0s20f0u9 interface to be able to connect again.

Based on the log below I think the RTL871X and the rtl8812au module conflicts and the first decides to shutdown the driver and it might shuts down the usb for a moment.

Any other idea how can I make this device working stable with gentoo?

Dmesg:

NeddySeagoon · Posted: Thu Aug 16, 2018 9:21 am Post subject:

sayusi,

The entire dmesg would be useful. Please post it on a pastebin.

At face value

sayusi · n00b Joined: 10 Aug 2006 Posts: 26 Location: Hungary

Thank you very much for the suggestion to put the device into another USB slot. It works now, but there are side effects. Sometimes it drops the connection temporarily - whenever I check output of ifconfig it shows that the interface does not have IP address - but a few seconds later it works again. Ssh connection got frozen for a few secs. DMESG does not contain any error in these cases. I assume this behaviour is kind of nature of wireless connection. The bandwidth of the connection is acceptable (10-15 MByte/sec with 5GHz), under Win 10 I have the same speed.

I mark this post as solved.
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-- Csanyi Andras/Sayusi Ando -- http://sayusi.hu -- http://facebook.com/andras.csanyi
-- "Trust in God and keep your gunpowder dry!!" - Cromwell

NeddySeagoon · Posted: Thu Aug 16, 2018 3:04 pm Post subject:

sayusi,

Maybe that's power saving?
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Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

sayusi · n00b Joined: 10 Aug 2006 Posts: 26 Location: Hungary

I assume - I'm not expert on this field, under continuous traffic - emerge output is displayed on my laptop screen - power saving should not be enabled. On the other hand, these glitches are not periodical, they rather random.
_________________
- -
-- Csanyi Andras/Sayusi Ando -- http://sayusi.hu -- http://facebook.com/andras.csanyi
-- "Trust in God and keep your gunpowder dry!!" - Cromwell

NeddySeagoon · Posted: Thu Aug 16, 2018 4:00 pm Post subject:

sayusi,

Be sure there is continuous traffic.
Run ping in another terminal Window. Its not very efficient but it will prove a point. If that stops the connection dropping, its worth looking into power saving.
If the connection still drops randomly, its not power saving.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.