[SOLVED] no wlan0 with slackwarearm-current dated feb 6, 2022

jowski · 02-07-2022, 09:43 PM

I did a fresh install on my Pi3 and can't get wlan0 to come up. "ifconfig wlan0 up" gives "wlan0: ERROR while getting interface flags: No such device" and "wpa_supplicant ..." gives amoung other things "Failed to initialize driver 'nl80211'".

Wireless on these things is less than fun.

Jim

frankbell · 02-07-2022, 09:53 PM

What is the wireless chipset (the command lspci issued in a terminal should provide that information)?

jowski · 02-07-2022, 10:28 PM

Did 'lspci' as root and got this:

lspci: Cannot find any working access method.

Some serious hair pulling going on here because before the upgrade I had the wireless up and running without an issue.

Isn't there something in dmesg that I can grep? 'wlan' and 'phy' weren't of much use.

uname -r gives "5.15.18-v7-sarpi3" so I think my /boot might be messed up.

Jim

edit: I did 'modprobe brcmfmac' and 'modprobe mac80211_hwsim' and wlan0 came up. Do we have to set up the 80211 module loading somewhere?

Exaga · 02-08-2022, 01:35 AM

Quote:

Originally Posted by jowski

I did a fresh install on my Pi3 and can't get wlan0 to come up. "ifconfig wlan0 up" gives "wlan0: ERROR while getting interface flags: No such device" and "wpa_supplicant ..." gives amoung other things "Failed to initialize driver 'nl80211'".

Wireless on these things is less than fun.

Hi Jim,

I'm not having any problems with the RPi3 wireless using the 5.15.18-v7-sarpi3 batch. I do use networkmanager and not wpa_supplicant, but that should make no difference. There's a wireless guide on this page that may be of assistance.

[EDIT]

Code:

root@drie:~# iwconfig wlan0
wlan0     IEEE 802.11  ESSID:off/any
          Mode:Managed  Access Point: Not-Associated   Tx-Power=31 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on

root@drie:~# ifconfig wlan0 up
root@drie:~# iwlist wlan0 scan

This gives me a list of many wireless access points.

jowski · 02-08-2022, 09:35 AM

It turns out that I made a mistake in the installation. When I reinstalled and followed the instructions carefully, I was able to bring wlan0 up without a problem. It's another lesson learned for this old guy who's been a slacker for over 25 years. Next time I "assume" and think I can skip an instruction, I'll look again.

Marking it solved. Thanks for everything.

Jim