I'm completely stuck. I have Raspberry Pi Zero W and I'm trying to get the built-in Wi-Fi to work. After a clean install of 2017-08-16 Raspbian Stretch, when I click on the Wi-Fi button in the top right screen, it says "no wireless interface found". When I do lsmod, I see:
pi@raspberrypi:~ $ lsmod Module Size Used by bluetooth 374820 0 fuse 94600 3 cfg80211 525806 0 rfkill 21373 3 bluetooth,cfg80211 evdev 11746 1 snd_bcm2835 23131 1 snd_pcm 97825 1 snd_bcm2835 snd_timer 22706 1 snd_pcm snd 68784 5 snd_timer,snd_bcm2835,snd_pcm bcm2835_gpiomem 3791 0 uio_pdrv_genirq 3718 0 uio 10166 1 uio_pdrv_genirq fixed 3029 0 i2c_dev 6642 0 ip_tables 12512 0 x_tables 20921 1 ip_tables ipv6 384532 14
So if I'm correct, that suggests that the Wi-Fi module is loaded. But when I do ifconfig -a, I see:
pi@raspberrypi:~ $ ifconfig 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 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Which suggests that I'm missing a driver. But if I'm correct the driver for the build in chip should be built-in to Raspbian. I also tried some other hopeless things like adding my SSID and password to the wpa_supplicant.conf file and doing the same thing on Stretch Lite and 2017-07-05 Jessie and Jessie lite. Plus I tried placing my SD card in old Raspberry Pi 1 and updating and upgrading all packages with:
sudo apt-get update sudo apt-get upgrade
None of that worked. Do I have a broken chip or am I just missing something?