How to set parameters for Realtek wifi rtl8723

Solution 1:

Regarding your question for how to set parameters, you could use something like (=0 meaning disable, =1 meaning enable, and as Sneetsher mentions msi is disabled by default): $ echo "options rtl8723be fwlps=0 ips=0" | sudo tee /etc/modprobe.d/rtl8723be.conf

Regarding your WiFi problem, you could check out my answer to the question My wifi drops the connection after a few minutes realtek8723be

Solution 2:

Before you start, you will need to install sysfsutils:

sudo apt-get update
sudo apt-get install sysfsutils

First, to show the options that are currently in use and the existing parameters, run the following command:

sudo systool -a -v -m rtl8723be | grep -A8 "Parameters:"

Under "Parameters:", you will see the available options and the existing parameters. Here is an example of that section:

  Parameters:
    debug               = "1"
    disable_watchdog    = "N"
    fwlps               = "Y"
    ips                 = "Y"
    msi                 = "Y"
    swenc               = "N"
    swlps               = "N"

It appears that the msi option can be set to Y or N.

To set msi to off, you should run the following commands:

sudo modprobe -r rtl8723be
sudo modprobe rtl8723be msi=N

Now, verify the change:

sudo systool -a -v -m rtl8723be | grep -A8 "Parameters:"

The output should now look like this:

  Parameters:
    debug               = "1"
    disable_watchdog    = "N"
    fwlps               = "Y"
    ips                 = "Y"
    msi                 = "N"
    swenc               = "N"
    swlps               = "N"

To make this change permanent, you should create a file /etc/modprobe.d/rtl8723be.conf. Run the following command:

sudo nano /etc/modprobe.d/rtl8723be.conf

Now, copy and paste the following into the file:

options rtl8723be debug=1
options rtl8723be disable_watchdog=N
options rtl8723be fwlps=Y
options rtl8723be ips=Y
options rtl8723be msi=N
options rtl8723be swenc=N
options rtl8723be swlps=N

Press CTRL + o and then press ENTER to save the file. Press CTRL + x to exit nano.

Now you can make changes to this file to apply your desired settings. After you make changes to the file, run the following commands to apply the changes:

sudo modprobe -r rtl8723be
sudo modprobe rtl8723be

Solution 3:

I'm using Ubuntu 14.04 with 14.10 kernel. It does work for me.

~$ sudo modprobe  rtl8723be msi=0
~$ more /sys/module/rtl8723be/parameters/msi 
N
~$ sudo modprobe -r rtl8723be
~$ sudo modprobe  rtl8723be msi=1
~$ more /sys/module/rtl8723be/parameters/msi 
Y

Same module version:

~$ modinfo rtl8723be
filename:       /lib/modules/3.16.0-23-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723be/rtl8723be.ko
firmware:       rtlwifi/rtl8723befw.bin
description:    Realtek 8723BE 802.11n PCI wireless
license:        GPL
author:         Realtek WlanFAE <[email protected]>
author:         PageHe  <[email protected]>
srcversion:     C94095C986767A931B924EF

Default is 0 for msi so no need for it, but you should for ips=0 fwlps=0

Try with both modprobe or insmod.