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I use the TP-Link TL-WN823N wifi adapter, which connects to Alcatel Link Zone MW40V wifi router. OS is Ubuntu Xenial.

My script checks the connection every 1 sec. by pinging my router.

Every few minutes the connection is dropped for 10 seconds. Sometimes it takes longer, until I reconnect my usb device.

Here is the result of the script suggested for this issue*:

http://paste.ubuntu.com/25666809/

And here is the syslog, around the time I loose the connection:

Oct  3 14:52:35 konrad kernel: [48057.888362] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:52:35 konrad kernel: [48058.003310] RTL871X: SetHwReg8192E(enxd46e0e147875): [HW_VAR_MACID_SLEEP] macid=0, org reg_0x4d4=0x00000000
Oct  3 14:52:37 konrad kernel: [48060.078834] RTL871X: survey done event(e) band:0 for enxd46e0e147875
Oct  3 14:52:37 konrad kernel: [48060.078851] RTL871X: rtw_indicate_scan_done(enxd46e0e147875)
Oct  3 14:52:43 konrad kernel: [48065.904390] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:52:45 konrad kernel: [48067.908373] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:52:47 konrad kernel: [48069.912351] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:52:49 konrad kernel: [48071.916318] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:52:51 konrad kernel: [48073.920294] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:52:53 konrad kernel: [48075.924656] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:52:55 konrad kernel: [48077.928901] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:52:59 konrad kernel: [48081.936320] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:53:01 konrad kernel: [48083.940556] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:53:03 konrad kernel: [48085.944913] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:53:05 konrad kernel: [48087.948873] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:53:07 konrad kernel: [48089.952599] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:53:09 konrad kernel: [48091.956913] RTL871X: rtl8192e_sreset_xmit_status_check tx hang 
Oct  3 14:53:11 konrad kernel: [48093.960434] RTL871X: rtl8192e_sreset_xmit_status_check tx hang

What I did:

  1. I disabled power saving with

    options 8192eu rtw_power_mgnt=0 rtw_enusbss=1 rtw_ips_mode=1

In /etc/modprobe.d/8192eu.conf

  1. I disabled support for IPv6, did not work, so I enabled it again

  2. I upgraded network-manager with:

    sudo apt-get install network-manager

  3. To dismiss the theory that it's a router which disables the connection when inactive, I wrote a script pinging it every 1 sec, plus, this script tells me exactly when the connection drops, so I hoped seeing a related (in time) message in /var/log/syslog which doesn't really helped, because the connection is dropped usually in the middle of:

konrad kernel: [ 515.730095] RTL871X: rtw_indicate_scan_done(enxd46e0e147875)

Sometimes, but not always, it is preceded by:

konrad kernel: [ 515.730060] RTL871X: survey done event(f) band:0 for enxd46e0e147875

BTW, the icon of wifi in the taskbar says it is still "connected". Which isn't true.

Please... I've been struggling with it for weeks now...

*this is the script which generated the above report: My wireless/WiFi connection does not work. What information is needed to diagnose the issue?

konrados
  • 213

0 Answers0