I'm having the same issues here.
Raspberry Pi 3 Model B v1.2 the Wifi is -spontaneously- not working anymore.
With different SD-cards (later even one clean install) the Raspberry was working fine for years on the old SD-card.
After 2 or 3 months I wanted my robot to run around again, but wlan0 was missing and I can not get it to work again.
Updated the old Rasbian SD-card did not work. No BT or wlan0 active.
Creating a new one got BT active but still no wlan0?
Can not set the Raspberry Pi Configuration / Localisation / WiFi Country, it is greyed out / not working.
Using a USB dongle does get wlanX working, but it normally runs on batteries, which will have to be more powerful also powering the USB dongle.
Eth0 is also working fine.
Command's I tried:Q's:
- Why does WiFi -spontaneously- not working anymore? (What could be the cause, as the machine was not moved or whatever.)
- How to test wlan0 functionality, on CLI or GUI?
- Why not 1 error message of missing hardware?
- Why does dmesg not showing any issues?
Searching the forum it seems I am not the only one having these weird WiFi issues (bad hardware?).
DG.
Raspberry Pi 3 Model B v1.2 the Wifi is -spontaneously- not working anymore.
With different SD-cards (later even one clean install) the Raspberry was working fine for years on the old SD-card.
After 2 or 3 months I wanted my robot to run around again, but wlan0 was missing and I can not get it to work again.
Updated the old Rasbian SD-card did not work. No BT or wlan0 active.
Creating a new one got BT active but still no wlan0?
Can not set the Raspberry Pi Configuration / Localisation / WiFi Country, it is greyed out / not working.
Using a USB dongle does get wlanX working, but it normally runs on batteries, which will have to be more powerful also powering the USB dongle.
Eth0 is also working fine.
Command's I tried:
Code:
$ iwconfig lo no wireless extensions.eth0 no wireless extensions.$ ifconfig eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.117.193 netmask 255.255.255.0 broadcast 192.168.117.255 inet6 fe80::9e6:7b5f:6fc:f6be prefixlen 64 scopeid 0x20<link> ether b8:27:eb:08:5b:42 txqueuelen 1000 (Ethernet) RX packets 1202 bytes 76541 (74.7 KiB) RX errors 0 dropped 770 overruns 0 frame 0 TX packets 162 bytes 22591 (22.0 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0lo: 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 1000 (Local Loopback) RX packets 4103 bytes 333005 (325.2 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 4103 bytes 333005 (325.2 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0$ rfkill list0: hci0: BluetoothSoft blocked: noHard blocked: no$ sudo ifconfig wlan0 set power offSIOCSIFADDR: No such devicewlan0: ERROR while getting interface flags: No such deviceSIOCSIFADDR: No such devicewlan0: ERROR while getting interface flags: No such deviceSIOCSIFADDR: No such devicewlan0: ERROR while getting interface flags: No such device$ dmesg | grep mmc1 (returns NOTHING)$ dmesg | grep mmc0[ 3.090612] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)[ 3.122964] mmc0: host does not support reading read-only switch, assuming write-enable[ 3.128254] mmc0: new high speed SDHC card at address 59b4[ 3.130176] mmcblk0: mmc0:59b4 USD00 29.5 GiB [ 3.135581] mmcblk0: mmc0:59b4 USD00 29.5 GiB- Why does WiFi -spontaneously- not working anymore? (What could be the cause, as the machine was not moved or whatever.)
- How to test wlan0 functionality, on CLI or GUI?
- Why not 1 error message of missing hardware?
- Why does dmesg not showing any issues?
Searching the forum it seems I am not the only one having these weird WiFi issues (bad hardware?).
DG.
Statistics: Posted by DGDodo — Sun Mar 10, 2024 2:04 pm