About UBUNTU16 Wireless card rtl8723be frequent off-line and insufficient signal solution

Source: Internet
Author: User

Recently installed in the new computer ubuntu16, the results of WiFi is often not connected, even on a period of time off the line, the router is next to the computer, and the signal is very if.

But the Windows system does not have any problems, so on the Internet to find solutions, but also in accordance with the method of the online test, the results of a lot of methods are useless.

Finally, the solution was found from the Askubuntu.

The first thing to look at is the wireless network card model for this machine:

1[Email protected]:~$ lspci2 xx:00.0Host Bridge:intel Corporation Broadwell-u host Bridge-opi (rev the)3 xx:02.0VGA compatible Controller:intel Corporation broadwell-u Integrated Graphics (rev the)4 xx:03.0Audio Device:intel Corporation Broadwell-u Audio Controller (rev the)5 xx:04.0Signal processing Controller:intel Corporation broadwell-u Camarillo Device (rev the)6 xx:14.0USB Controller:intel Corporation Wildcat POINT-LP USB XHCI Controller (revGeneva)7 xx:16.0Communication Controller:intel Corporation Wildcat POINT-LP MEI Controller #1(RevGeneva)8 xx: 1b.0Audio Device:intel Corporation Wildcat Point-lp High Definition Audio Controller (revGeneva)9 xx: 1c.0PCI Bridge:intel Corporation Wildcat POINT-LP PCI Express Root Port #1(rev E3)Ten xx: 1c.1PCI Bridge:intel Corporation Wildcat POINT-LP PCI Express Root Port #2(rev E3) One xx: 1c.2PCI Bridge:intel Corporation Wildcat POINT-LP PCI Express Root Port #3(rev E3) A xx: 1c.3PCI Bridge:intel Corporation Wildcat POINT-LP PCI Express Root Port #4(rev E3) - xx: 1c.4PCI Bridge:intel Corporation Wildcat POINT-LP PCI Express Root Port #5(rev E3) - xx: 1d.0USB Controller:intel Corporation Wildcat POINT-LP USB EHCI Controller (revGeneva) the xx: 1f.0ISA Bridge:intel Corporation Wildcat Point-lp LPC Controller (revGeneva) - xx: 1f.2SATA Controller:intel Corporation Wildcat POINT-LP SATA Controller [AHCI Mode] (revGeneva) - xx: 1f.3Smbus:intel Corporation Wildcat Point-lp SMBus Controller (revGeneva) -  Geneva:00.0Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. rts522a PCI Express Card Reader (rev on) +  ,:00.0network Controller:realtek Semiconductor Co., Ltd. rtl8723be PCIe Wireless Network Adapter -  the:00.0Ethernet Controller:realtek Semiconductor Co., Ltd. RTL8101/2/6e PCI Express fast/Gigabit Ethernet Controller (Rev. 0a) +0a:00.03D controller:nvidia Corporation gm108m [GeForce 940M] (rev. A2)

See line 19th is the wireless card information, and the model is rtl8723be.

From the Internet to see the RTL8723 Series Network card has this frequent drop problem, but is version is updated version, added a parameter.

Again to see the rtl8723be this nic driver parameter information,

1[Email protected]:~$ modinfo rtl8723be2FileName:/lib/modules/4.4.0- A-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723be/Rtl8723be.ko3firmware:rtlwifi/Rtl8723befw.bin4Description:realtek 8723BE802. 11n PCI Wireless5 LICENSE:GPL6Author:realtek Wlanfae <[email protected]>7Author:pagehe <[email protected]>8 srcversion:00619764255210776fab54d9alias:pci:v000010ecd0000b723sv*sd*bc*sc*i*Ten depends:rtlwifi,rtl_pci,btcoexist,mac80211 OneVermagic:4.4.0- A-generic SMP mod_unload modversions AParm:swlps:BOOL -Parm:swenc:using Hardware Crypto (default0[hardware]) -(BOOL) theParm:ips:using No link Power Save (default1is Open) -(BOOL) -Parm:fwlps:using linked FW Control Power Save (default1is Open) -(BOOL) +Parm:msi:Set to1To use MSI interrupts mode (default0) -(BOOL) +Parm:debug:Set Debug Level (0-5) (Default0) (int) AParm:disable_watchdog:Set to1To disable the watchdog (default0) at(BOOL) -Parm:ant_sel:Set to1Or2To force antenna number (default0) -(int)

Look at lines 12th through 25. These parameters, IPs and Fwlps are used to control the energy saving, Ant_sel is used to control the signal strength. The main thing is to modify the default values for these parameters.

First we open the configuration-driven file

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

Paste the following parameters into the configuration file:

Options Rtl8723be debug=1options rtl8723be disable_watchdog=noptions rtl8723be fwlps=  Yoptions rtl8723be ips=yoptions rtl8723be msi=noptions rtl8723be swenc=noptions rtl8723be Swlps=n
Options Rtl8723be ant_sel=2

After saving the configuration file, run the following command to apply the configuration

sudo modprobe -R rtl8723be[email protected]:sudomodprobe rtl8723be

Is the signal a lot stronger?

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About UBUNTU16 Wireless card rtl8723be frequent off-line and insufficient signal solution

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