Yesterday I successfully set up hostapd/dnsmasq by following this tutorial: Turn any computer into a wireless access point with Hostapd - Linux-natives. I might have had a few side steps, I’m not completely sure.
I could bring wifi back up by commenting out the non lo-related lines in /etc/network/interfaces, and running sudo service networking restart. Again, it was yesterday, there might have been some additional steps which I forgot about
Today I’m trying that again, but a normal wifi connection can’t seem to be establishable. I used i3wm to test these things, and today someone opened a gnome session on the machine, which might have automatically messed with some config files, but the issue might not be related at all.
Here is some relevant info:
# uname -a
Linux tegra-ubuntu 4.4.38-tegra #1 SMP PREEMPT Thu May 17 00:15:19 PDT 2018 aarch64 aarch64 aarch64 GNU/Linux
It is a Jetson TX2, connected with the devkit, plugged into ethernet
I took dmesg outputs both when booting with the hostapd-compatible /etc/network/interfaces, and without. When without, these lines popped up:
CFG80211-ERROR) __wl_cfg80211_scan : Invalid Scan Command at SoftAP mode
CFG80211-ERROR) wl_cfg80211_scan : scan error (-22)
Interestingly,
ps aux | grep hostapd
shows no processes running (except the grep process)
# iw wlan0 info
Interface wlan0
ifindex 5
wdev 0x1
addr 00:04:4b:c4:f3:04
type managed
wiphy 0
This is what I think it should normally look like, if not connected, so that’s fine. When using hostapd, it comes up with an ssid and a type AP
But then this comes:
# ip link show wlan0
5: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state DORMANT mode DORMANT group default qlen 1000
link/ether 00:04:4b:c4:f3:04 brd ff:ff:ff:ff:ff:ff
Normally, it should be state UP mode DORMANT, but not here. When with hostapd, it’s state UP mode DEFAULT
Then there’s this, which I think is normal across tegras, as it’s the same in the other tegras I could play with, even when they are connected to wifi
# iwconfig wlan0
wlan0 no wireless extensions.
I don’t know how normal this is, but lspci outputs nothing. However, here’s lshw:
# lshw -class network
*-network:0
description: Ethernet interface
physical id: 3
logical name: usb0
serial: 72:0a:17:35:8a:ea
capabilities: ethernet physical
configuration: broadcast=yes driver=g_ether driverversion=29-May-2008 firmware=tegra-xudc link=no multicast=yes
*-network:1 DISABLED
description: Ethernet interface
physical id: 4
logical name: dummy0
serial: 9a:21:99:f6:2b:6b
capabilities: ethernet physical
configuration: broadcast=yes driver=dummy driverversion=1.0
*-network:2
description: Ethernet interface
physical id: 5
logical name: wlan0
serial: 00:04:4b:c4:f3:04
capabilities: ethernet physical
configuration: broadcast=yes driver=wl driverversion=0 multicast=yes
*-network:3
description: Ethernet interface
physical id: 6
logical name: eth0
serial: 00:04:4b:c4:f3:06
size: 1Gbit/s
capacity: 1Gbit/s
capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=eqos duplex=full ip=192.168.3.120 link=yes multicast=yes port=MII speed=1Gbit/s
Running scan through wpa_cli:
<3>CTRL-EVENT-SCAN-FAILED ret=-22
# rfkill list
0: bluedroid_pm: Bluetooth
Soft blocked: yes
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: brcmfmac-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
What else should I try?