Ubuntu – Wifi drops and won’t reconnect until reboot (14.04 with RTL8723BE)


I have a new Sager NP2650 laptop with a fresh Ubuntu 14.04LTS install. It has a Realtek RTL8723BE wireless adapter in it. Initially after installation I had no wireless, but I was able to get it working after following the instructions on this thread:
http://ubuntuforums.org/showthread.php?t=2205497 . I had to checkout an earlier version of the driver from git as the thread says in order to get it to compile on my system.

The problem is that the connection eventually is lost within an hour or so, although Network Manager still shows it as connected. If I disable and re-enable the Wi-Fi or Networking it doesn't work. The wifi just endlessly tries to connect, but fails.

If I reboot it works fine again for a while.

I ran the wireless diagnostic script found elsewhere on the forum and uploaded my results here:


I could use some help. Thanks!

Best Answer

I have same problem. For me, work-around is to remove and reinsert rtl8723be module:

root@lenovob5400# rmmod rtl8723be && modprobe rtl8723be

Sure it's not a solution, but better than rebooting. What a shame Ubuntu does not work with such popular wifi card.

BTW, I tried kernel 3.15, but it has same issue (and few others).

Looking forward for better solution. Go get it hackers! ;-)


Friends, please vote on related ubuntu bug.

Update 2:

Upcoming ubuntu kernel 3.13.0-25.47 have #1240940 bug fixed, however, after installing this kernel from ppa, the rtl8723be module is there indeed, but I was not able to connect at all. Currently I am using standard 3.13.0-24-generic kernel with rtl8723be kernel module from: https://github.com/lwfinger/rtl8723be.git at 604aa9058fb9e5bb1cf571c99989d081f8fc8b9b commit.

Update 3:

I tried ndiswrapper 1.9 with winxp 64 drivers (and man others). All failed to load:

[  327.503426] ndiswrapper version 1.59 loaded (smp=yes, preempt=no)
[  327.517958] ndiswrapper: driver netrtwlane (Realtek Semiconductor Corp.,08/02/2013,2010.5.0724.2013) loaded
[  327.519049] ndiswrapper (NdisWriteErrorLogEntry:188): log: C0001388, count: 1, return_address: ffffffffa05e5d9f
[  327.519052] ndiswrapper (NdisWriteErrorLogEntry:191): code: 0x605
[  327.519143] ndiswrapper (mp_init:211): couldn't initialize device: C001001E
[  327.519146] ndiswrapper (pnp_start_device:395): Windows driver couldn't initialize the device (C0000001)
[  327.519150] ndiswrapper (mp_halt:254): device ffff8800cd747880 is not initialized - not halting
[  327.519151] ndiswrapper: device eth%d removed
[  327.519380] ndiswrapper: probe of 0000:04:00.0 failed with error -22

I tried one more trick - added fwlps=0 parameter for the rtl8723be module. So far so good. We will see...

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