I have a Lenovo M5400 laptop with rtl8723be wireless card.
Previous user told me that wifi card is probably broken. He has been running Ubuntu on it a few years ago.
And, in fact, wifi does not work. But card is - at least partially - alive.
I'm using ifupdown & wpasupplicant. The symptoms are:
/etc/wpa_supplicant/wpa_supplicant.conf:I launch manually wpa supplicant then Everything goes well up to this moment. Then I run the scan:Awesome, let's connect to this AP!Occasionally, after some time I manage to get apropriate results from 'scan' command. Sometimes it does not work at all just after boot.
I've been browsing the web for solutions for couple of months. Things I've already done:
I can provide more info, just tell me what do you would like to see.
Previous user told me that wifi card is probably broken. He has been running Ubuntu on it a few years ago.
And, in fact, wifi does not work. But card is - at least partially - alive.
I'm using ifupdown & wpasupplicant. The symptoms are:
- ifup wlp4s0 ends with dhclient timeout after many attempts to obtain an IP address
- enable_network in wpa_cli goes into slow, infinite loop of "SCAN-STARTED... SCAN-RESULTS... NETWORK_NOT-FOUND..."
- manually scanning for networks with wpa_cli randomly shows all APs, or none
/etc/wpa_supplicant/wpa_supplicant.conf:
Code:
ctrl_interface=/run/wpa_supplicantupdate_config=1# I've successfully tested it with an USB wireless adapternetwork={ssid="<my network ssid>"psk="<password>"mesh_fwding=1disabled=1}Code:
wpa_supplicant -B -i wlp4s0 -c /etc/wpa_supplicant/wpa_supplicant.confCode:
root@hostname:~# wpa_cliwpa_cli v2.10Copyright (c) 2004-2022, Jouni Malinen <j@w1.fi> and contributorsThis software may be distributed under the terms of the BSD license.See README for more details.Selected interface 'wlp4s0'Interactive mode>Code:
> scanOK<3>CTRL-EVENT-SCAN-STARTED<3>CTRL-EVENT-SCAN-RESULTS<3>WPS-AP-AVAILABLE<3>CTRL-EVENT-NETWORK-NOT-FOUND> scan_resultsbssid / frequency / signal level / flags / ssid6c:ba:b8:8c:8a:102462-16[WPA2-PSK-CCMP][WPS][ESS]<my network ssid>Code:
> enable_network 0OK<3>CTRL-EVENT-SCAN-STARTED<3>CTRL-EVENT-SCAN-RESULTS<3>WPS-AP-AVAILABLE<3>SME: Trying to authenticate with 6c:ba:b8:8c:8a:10 (SSID='<my network ssid>' freq=2462 MHz)<3>CTRL-EVENT-SCAN-STARTED<3>CTRL-EVENT-SCAN-RESULTS<3>WPS-AP-AVAILABLE<3>SME: Trying to authenticate with 6c:ba:b8:8c:8a:10 (SSID='<my network ssid>' freq=2462 MHz)<3>CTRL-EVENT-SCAN-STARTED<3>CTRL-EVENT-SCAN-RESULTS<3>WPS-AP-AVAILABLE<3>SME: Trying to authenticate with 6c:ba:b8:8c:8a:10 (SSID='<my network ssid>' freq=2462 MHz)<3>CTRL-EVENT-SCAN-STARTED<3>CTRL-EVENT-SCAN-RESULTS<3>WPS-AP-AVAILABLE<3>CTRL-EVENT-NETWORK-NOT-FOUND<3>CTRL-EVENT-SCAN-STARTED<3>CTRL-EVENT-SCAN-RESULTS #and so on forever, only the "WPS-AP-AVAILABLE" message doesn't show up anymoreI've been browsing the web for solutions for couple of months. Things I've already done:
- [set parameters in /etc/modprobe.d/rtl8723be.conf: ant_sel, fwlps, ips to values other than default (one at a time) and rebooted (after every change)
- checked the journal for firmware related stuff - it's clean.
- checked if this device is suported by firmware-realtek package
- installed firmware-misc-nonfree
- checked if the appropriate firmware is loaded
- taken the laptop apart and checked if antennas are not damaged and connected correctly into wireless adapter
- many other things I forgot to mention
I can provide more info, just tell me what do you would like to see.
Statistics: Posted by dashek — 2024-02-01 20:44 — Replies 1 — Views 25