wifi disconnection on ubuntu 14.04 after a short while of connection

What is the output of:

sudo lshw -C network; lsb_release -a; uname -a

Thanks

here are the results of the commands,
sudo lshw -C network :

*-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eth0
       version: 10
       serial: 68:f7:28:2e:68:8c
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:60 ioport:4000(size=256) memory:c0504000-c0504fff memory:c0500000-c0503fff
  *-network
       description: Wireless interface
       product: RTL8723BE PCIe Wireless Network Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlan0
       version: 00
       serial: 74:29:af:55:12:e9
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtl8723be driverversion=3.13.0-57-generic firmware=N/A ip=192.168.43.84 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
       resources: irq:19 ioport:3000(size=256) memory:c0400000-c0403fff

 lsb_release -a :

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty

uname -a :

Linux wizard 3.13.0-57-generic #95-Ubuntu SMP Fri Jun 19 09:28:15 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Try:

echo "options rtl8723be fwlps=0 swlps=0" | sudo tee /etc/modprobe.d/rtl8723befix.conf > /dev/null

Reboot to test

thanks, it is working fine so far,

On Fri, Jul 17, 2015 at 1:16 PM, actionparsnip <
<email address hidden>> wrote:

> Your question #269326 on broadcom-sta in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/broadcom-sta/+question/269326
>
> Status: Open => Answered
>
> actionparsnip proposed the following answer:
> Try:
>
> echo "options rtl8723be fwlps=0 swlps=0" | sudo tee
> /etc/modprobe.d/rtl8723befix.conf > /dev/null
>
> Reboot to test
>
> --
> If this answers your question, please go to the following page to let us
> know that it is solved:
>
> https://answers.launchpad.net/ubuntu/+source/broadcom-sta/+question/269326/+confirm?answer_id=2
>
> If you still need help, you can reply to this email or go to the
> following page to enter your feedback:
> https://answers.launchpad.net/ubuntu/+source/broadcom-sta/+question/269326
>
> You received this question notification because you asked the question.
>

it has solved myn too,.. what does that command do if i may ask?

Thanks actionparsnip, that solved my question.