Ubuntu – Ubuntu 14.04 – Wifi keeps disconnecting on Thinkpad T450S with Realtek wireless adapter

14.04networkingrealtekthinkpadwireless

The wifi connection disconnects many times per hour. The problem only occurs at my work (not at home). Maybe there's something to configure about the wireless driver or something?

Here's the driver : modinfo r8192ee

filename:       /lib/modules/3.16.0-31-generic/kernel/drivers/staging/rtl8192ee/r8192ee.ko
firmware:       rtlwifi/rtl8192eefw.bin
description:    Realtek 8192E 802.11n PCI wireless
license:        GPL
author:         Larry Finger    <Larry.Finger@lwfinger.net>
author:         Realtek WlanFAE <wlanfae@realtek.com>
srcversion:     046553152F8274C9D21FCAC
alias:          pci:v000010ECd0000818Bsv*sd*bc*sc*i*
depends:        mac80211,cfg80211
staging:        Y
intree:         Y
vermagic:       3.16.0-31-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        6A:63:E8:EF:0C:63:AB:DB:14:5F:D1:7C:AA:A9:7B:8C:69:73:45:84
sig_hashalgo:   sha512
parm:           swlps:bool
parm:           swenc:using hardware crypto (default 0 [hardware])
 (bool)
parm:           ips:using no link power save (default 1 is open)
 (bool)
parm:           fwlps:using linked fw control power save (default 1 is open)
 (bool)
parm:           debug:Set debug level (0-5) (default 0) (int)

EDIT : I think it's even less stable under 14.10

Best Answer

  • I've had a similar problem on my Lenovo Y50 (rtl8723be), where wifi would disconnect with random intervals (between 5-10 minutes)

    I found this thread that matched my problems: http://ubuntuforums.org/showthread.php?t=2262957

    where user Pilot6 suggests to update drivers from this repository https://github.com/lwfinger/rtlwifi_new and it looks like it has drivers for your (rtl8192ee) card as well.

    this stabilized the wifi connections for me at least

    instructions;

    #dependencies
    sudo apt-get install git build-essential
    
    git clone https://github.com/lwfinger/rtlwifi_new.git /tmp/rtlwifi
    cd /tmp/rtlwifi
    make
    sudo make install
    sudo reboot -n