WIFI & rtl8723 chip

[didier83]

Just installed on my new laptop f25 in dual boot with W10.
The problem is with the WIFI. Networkmanager says it is connected, but no internet access.

The same system under W10 is ok.

here are what I've collected that could help to give me some clues.




$ ifconfig
enp2s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 30:e1:71:c7:e4:8f txqueuelen 1000 (Ethernet)
RX packets 130 bytes 10826 (10.5 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 122 bytes 12516 (12.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 94 bytes 6584 (6.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 94 bytes 6584 (6.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlo1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.97 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::5a00:e3ff:feaf:8703 prefixlen 64 scopeid 0x20<link>
ether 58:00:e3:af:87:03 txqueuelen 1000 (Ethernet)
RX packets 1071 bytes 300649 (293.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1305 bytes 170873 (166.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0


$ lspci -k
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
Subsystem: Hewlett-Packard Company Device 81c1
Kernel driver in use: rtl8723be
Kernel modules: rtl8723be

$ dmesg|g -i rtl8723be
[ 13.808786] rtl8723be: Using firmware rtlwifi/rtl8723befw.bin
[ 14.790644] rtl8723be 0000:03:00.0 wlo1: renamed from wlan0



$ lsmod|grep rtl
rtl8723be 90112 0
btcoexist 53248 1 rtl8723be
rtl8723_common 24576 1 rtl8723be
rtl_pci 28672 1 rtl8723be
rtlwifi 73728 2 rtl_pci,rtl8723be
mac80211 749568 3 rtl_pci,rtlwifi,rtl8723be
cfg80211 589824 2 mac80211,rtlwifi
btrtl 16384 1 btusb
bluetooth 528384 33 btrtl,hci_uart,btintel,btqca,bnep,btbcm,rfcomm,btu sb


$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 0bda:0177 Realtek Semiconductor Corp.
Bus 001 Device 004: ID 04f2:b56c Chicony Electronics Co., Ltd
Bus 001 Device 003: ID 0bda:b008 Realtek Semiconductor Corp.
Bus 001 Device 002: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

$ netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 192.168.1.254 0.0.0.0 UG 0 0 0 wlo1
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlo1



$ nmcli device status[/B]
DEVICE TYPE STATE CONNECTION
wlo1 wifi connected Bbox-CD8C834C
enp2s0 ethernet unavailable --
lo loopback unmanaged --


$ iwlist scan[
enp2s0 Interface doesn't support scanning.

wlo1 Scan completed :
Cell 01 - Address: 64:7C:34:2B:C9:4C
Channel:1
Frequency:2.412 GHz (Channel 1)
Quality=28/70 Signal level=-82 dBm
Encryption key:on
ESSID:"Bbox-CD8C834C"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=000000b67dad64c5
Extra: Last beacon: 93593ms ago
IE: Unknown: 000D42626F782D4344384338333443
IE: Unknown: 010882848B961224486C
IE: Unknown: 030101
IE: Unknown: 2A0104
IE: Unknown: 32040C183060
IE: Unknown: 2D1AEC0103FFFFFF00000000000000000000000000000C1846 471100
IE: Unknown: 3D1601000400000000000000000000000000000000000000
IE: WPA Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F 00
IE: Unknown: 0B0505000B127A
IE: Unknown: 7F0101
IE: Unknown: DD07000C4307000000
IE: Unknown: 0706465220010D10

lo Interface doesn't support scanning.

$ nmcli device show
GENERAL.DEVICE: wlo1
GENERAL.TYPE: wifi
GENERAL.HWADDR: 58:00:E3:AF:87:03
GENERAL.MTU: 0
GENERAL.STATE: 100 (connected)
GENERAL.CONNECTION: Bbox-CD8C834C
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/1
IP4.ADDRESS[1]: 192.168.1.97/24
IP4.GATEWAY: 192.168.1.254
IP4.DNS[1]: 192.168.1.254
IP4.DOMAIN[1]: lan
IP6.ADDRESS[1]: fe80::5a00:e3ff:feaf:8703/64
IP6.GATEWAY:

GENERAL.DEVICE: enp2s0
GENERAL.TYPE: ethernet
GENERAL.HWADDR: 30:E1:71:C7:E4:8F
GENERAL.MTU: 1500
GENERAL.STATE: 20 (unavailable)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
WIRED-PROPERTIES.CARRIER: off

GENERAL.DEVICE: lo
GENERAL.TYPE: loopback
GENERAL.HWADDR: 00:00:00:00:00:00
GENERAL.MTU: 65536
GENERAL.STATE: 10 (unmanaged)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
IP4.ADDRESS[1]: 127.0.0.1/8
IP4.GATEWAY:
IP6.ADDRESS[1]: ::1/128
IP6.GATEWAY:


$ modinfo rtl8723be
filename: /lib/modules/4.9.9-200.fc25.x86_64/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723be/rtl8723be.ko.xz
firmware: rtlwifi/rtl8723befw.bin
description: Realtek 8723BE 802.11n PCI wireless
license: GPL
author: Realtek WlanFAE <wlanfae@realtek.com>
author: PageHe <page_he@realsil.com.cn>
alias: pci:v000010ECd0000B723sv*sd*bc*sc*i*
depends: rtlwifi,rtl8723-common,rtl_pci,btcoexist,mac80211
intree: Y
vermagic: 4.9.9-200.fc25.x86_64 SMP mod_unload
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
parm: swenc:Set to 1 for software crypto (default 0)
(bool)
parm: ips:Set to 0 to not use link power save (default 1)
(bool)
parm: swlps:Set to 1 to use SW control power save (default 0)
(bool)
parm: fwlps:Set to 1 to use FW control power save (default 1)
(bool)
parm: msi:Set to 1 to use MSI interrupts mode (default 0)
(bool)
parm: debug:Set debug level (0-5) (default 0) (int)
parm: disable_watchdog:Set to 1 to disable the watchdog (default 0)
(bool)
parm: ant_sel:Set to 1 or 2 to force antenna number (default 0)
(int)

Thanks

[PabloTwo]

Everything you post would appear to confirm your wifi is working just fine and connected to your access point "Bbox-CD8C834C". Maybe the problem lies there, or beyond. Is this a router/modem combo, or just a router with an externally attached modem? If the router is working OK (which it appears to be) but your modem is off or malfunctioning, then you would have a good connection the access point but "no internet".

Can you ping an outside domain name?

ping -c4 google.com

Can you physically see your access point router and/or modem? If you can, check the status LED lights. Sometimes they can tell you if you have internet or not. My netgear router LAN light goes to amber from green if the externally connected dsl modem is turned off or looses sync with the dsl signal.

[didier83]

I have found a solution at looking to the Tx-Power value of iwconfig command:

$ iwconfig

no wireless extensions.

wlo1 IEEE 802.11 ESSID:"Bbox-CD8C834C"
Mode:Managed Frequency:2.412 GHz Access Point: 64:7C:34:2B9:4C
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=36/70 Signal level=-74 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:61 Missed beacon:0

enp2s0 no wireless extensions.


If I compare to an other system on my desk, I get this:

$ iwconfig
lo no wireless extensions.

wlo1 IEEE 802.11 ESSID:"Bbox-CD8C834C"
Mode:Managed Frequency:2.412 GHz Access Point: 64:7C:34:2B9:4C
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-26 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:4 Missed beacon:0

enp2s0 no wireless extensions.


In my case the solution is to create the file /etc/modprobe.d/rtl8723be.conf with the following content:
options rtl8723be ant_sel=1

then type the following commands:

$ rmmod rtl8723be
$ modprobe rtl8723be

With this change I get this result:

$wconfig
lo no wireless extensions.

wlo1 IEEE 802.11 ESSID:"Bbox-CD8C834C"
Mode:Managed Frequency:2.412 GHz Access Point: 64:7C:34:2B9:4C
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-26 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

enp2s0 no wireless extensions.