rtl8723be unable to set wlp4s0 up

ibi33 · 2017-01-30 11:26:15

I am unable to get my wifi working:
When trying to do "set wlp4s0 up", the interface is still down; the program terminates without any output. The module is rtl8723be - the same as https://bbs.archlinux.org/viewtopic.php?id=222517 but without any errors.
wpa_gui gives "Could not get status from wpa_supplicant".

The output of "lsmod | grep rtl"

rtl8723be              86016  0
btcoexist              53248  1 rtl8723be
rtl8723_common         20480  1 rtl8723be
rtl_pci                28672  1 rtl8723be
rtlwifi                65536  2 rtl_pci,rtl8723be
mac80211              667648  3 rtl_pci,rtlwifi,rtl8723be

"dmesg | grep rtl"

[   57.069964] rtl8723be: Using firmware rtlwifi/rtl8723befw.bin
[   57.092162] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[   57.092522] rtlwifi: rtlwifi: wireless switch is on
[   57.381712] rtl8723be 0000:04:00.0 wlp4s0: renamed from wlan0

"modinfo rtl8723be"

filename:       /lib/modules/4.8.13-1-ARCH/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723be/rtl8723be.ko.gz
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:       4.8.13-1-ARCH SMP preempt mod_unload modversions 
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)

Last edited by ibi33 (2017-01-30 17:01:33)

Head_on_a_Stick · 2017-01-30 21:26:02

Have you seen https://wiki.archlinux.org/index.php/Wi … Frtl8723be?

I see that the firmware power-saving is enabled for your module, perhaps this is causing the problem.

ibi33 · 2017-01-30 22:20:45

I tried it as explained in your link, but nothing changed.

When executing "ip link set wlp4s0 up" "dmesg -w" does not give any output, whereas "journalctl -f" does the following

Jan 30 22:18:26 oksana sudo[899]:      lap : TTY=pts/0 ; PWD=/home/lap/nobackup ; USER=root ; COMMAND=/usr/bin/ip link set wlp4s0 up
Jan 30 22:18:26 oksana sudo[899]: pam_unix(sudo:session): session opened for user root by (uid=0)
Jan 30 22:18:27 oksana kernel: IPv6: ADDRCONF(NETDEV_UP): wlp4s0: link is not ready
Jan 30 22:18:27 oksana sudo[899]: pam_unix(sudo:session): session closed for user root

and after again "ip link set wlp4s0 up":

Jan 30 22:18:46 oksana sudo[902]:      lap : TTY=pts/0 ; PWD=/home/lap/nobackup ; USER=root ; COMMAND=/usr/bin/ip link set wlp4s0 up
Jan 30 22:18:46 oksana sudo[902]: pam_unix(sudo:session): session opened for user root by (uid=0)
Jan 30 22:18:46 oksana sudo[902]: pam_unix(sudo:session): session closed for user root

Head_on_a_Stick · 2017-01-31 17:31:53

Try disabling IPv6

ibi33 · 2017-02-01 07:18:30

I tried it by:
Adding a file in '/etc/sysctl.d/40-ipv6.conf

net.ipv6.conf.wlp4s0.disable_ipv6 = 1

and uncommenting one line in '/etc/hosts/'

#::1 localhost.localdomain localhost

and changing in '/etc/dhcpcd.conf'

#slaac private
#noipv4ll
noipv6rs
noipv6

but the device still does not change

Arch Linux

#1 2017-01-30 11:26:15

rtl8723be unable to set wlp4s0 up

#2 2017-01-30 21:26:02

Re: rtl8723be unable to set wlp4s0 up

#3 2017-01-30 22:20:45

Re: rtl8723be unable to set wlp4s0 up

#4 2017-01-31 17:31:53

Re: rtl8723be unable to set wlp4s0 up

#5 2017-02-01 07:18:30

Re: rtl8723be unable to set wlp4s0 up

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