RTL8723B WIfi driver problem

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fraizor
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Posts: 8
Joined: Wed Aug 26, 2015 5:22 pm

RTL8723B WIfi driver problem

Post by fraizor » Sun Sep 01, 2019 4:35 pm

Hello everyone

i am facing a weird wifi problem

i have low end laptop Chinese "Zed Air 2" RTL8723B

running Linux mint 19 based on Ubuntu 18.04

the wifi was running perfectly on stock windows 10 (photo atttached)

on linux mint direclty after instullation it does see wifi networks sometimes and sometimes it does not see any
when it does see wifi networks i cant connectat all.

i tried couple of posts but with no luck

this is the last thing i tried https://ubuntuforums.org/showthread.php?t=2333979 i did exactly as MR chili555 suggested

after couple of reboots i can successfully connect to my network but after another reboot it wont see wifi networks any more


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user@user-pc:~$ dmesg | grep -i rtl
[    7.343296] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[    7.343300] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
[    7.349156] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723b_config.bin failed with error -2
[    7.349163] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[    7.546818] usb 1-7: rtl8723bu_parse_efuse: dumping efuse (0x200 bytes):
[    7.546923] usb 1-7: RTL8723BU rev E (SMIC) 1T1R, TX queues 3, WiFi=1, BT=1, GPS=0, HI PA=0
[    7.546925] usb 1-7: RTL8723BU MAC: 54:c9:df:43:cf:8b
[    7.546928] usb 1-7: rtl8xxxu: Loading firmware rtlwifi/rtl8723bu_nic.bin
[    8.338913] usbcore: registered new interface driver rtl8xxxu
[    8.499026] RTL871X: module init start
[    8.499032] RTL871X: rtl8723bu v4.3.6.11_12942.20141204_BTCOEX20140507-4E40
[    8.499033] RTL871X: rtl8723bu BT-Coex version = BTCOEX20140507-4E40
[    8.499116] usbcore: registered new interface driver rtl8723bu
[    8.499117] RTL871X: module init ret=0
[   11.311774] rtl8xxxu 1-7:1.2 wlx54c9df43cf8b: renamed from wlan0

any help is highly appreciated
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JeremyB
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Posts: 10933
Joined: Fri Feb 21, 2014 8:17 am

Re: RTL8723B WIfi driver problem

Post by JeremyB » Sun Sep 01, 2019 5:18 pm

Run these commands in terminal and post termbin URL after second command is finished

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wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info && chmod +x wireless-info && ./wireless-info

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cat wireless-info.txt | nc termbin.com 9999

fraizor
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Posts: 8
Joined: Wed Aug 26, 2015 5:22 pm

Re: RTL8723B WIfi driver problem

Post by fraizor » Mon Sep 02, 2019 1:00 am


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