Arch Linux

snailer

Member

Registered: 2018-11-15

Posts: 4

[SOLVED] wpa_supplicant is connected but without any connection

I've freshly installed the latest Arch 2020.07.01 on my Dell XPS 9560, following the installation guide and then also the wiki page relative to my specific model.

During the installation, I was unable to establish a connection through wifi-menu (without receiving any error), which is what I usually do on my laptops, so I decided to try wpa_supplicant which worked flawlessly during my arch installation from USB.

For this reason, I installed wpa_supplicant to be used as I did on the installation media... but once I rebooted and logged into my freshly installed Arch, it started behaving differently.
What happens is that the connection gets established by the wpa_supplicant, but I have no actual connection to use (anything from ping to updates, and so on).

Now, I will try to show you everything I believe could be helpful, which is:

output for iplink show dev wlan0 at startup

2: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
      link/ether 9c:b6:d0:f1:a2:3f brd ff:ff:ff:ff:ff:ff

output for wpa_supplicant -i wlan0 -c /etc/wpa_supplicant/mynetwork.conf

wlan0: CTRL-EVENT-REGDOM-CHANGE init=BEACON_HINT type=UNKNOWN
wlan0: CTRL-EVENT-REGDOM-CHANGE init=BEACON_HINT type=UNKNOWN
wlan0: CTRL-EVENT-REGDOM-CHANGE init=BEACON_HINT type=UNKNOWN
wlan0: SME: Trying to authenticate with my::network::info (SSID='my network SSID' freq=5180 MHz)
wlan0: Trying to associate with my::network::info (SSID='my network SSID' freq=5180 MHz)
wlan0: Associated with my::network::info 
wlan0: CTRL-EVENT-SUBNECT-STATUS-UPDATE status=0
wlan0: WPA : Key negotiation completed with my::connection::info [PTK=CCMP GTK=CCMP]
wlan0: CTRL-EVENT-CONNECTED -Connection to my::network::info completed [id=0 id_str=]

output for iplink show dev wlan0 after the connection has been established

2: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DORMANT group default qlen 1000
      link/ether 9c:b6:d0:f1:a2:3f brd ff:ff:ff:ff:ff:ff

active network connection
I have already looked into the firmware list and I've seen my device listed, so the problem shouldn't be there (I assume), but I could be wrong...

If I try to ping any address it will give me a failure in name resolution or network unreachable, no network anywhere actually.

Now, I have tried many configurations with setting the interface up, down, up & down, down & up, etc... without any viable solution.
I have tried to repeat the installation process three times today, even rolling back one and two versions, but the problem remains.
I have tried with or without no acpi_rev_override=1 directive and tried to change it to 5 as someone already suggested elsewhere (with no actual difference in results).

I always read on both the wiki and the forums that the network manager should be always used exclusively, so that's why I've not installed anything more than that.

I am really sorry but I am starting to go mad behind this installation, would you please help me out?

Thanks in advance

Last edited by snailer (2020-07-09 12:35:33)

Trilby

Inspector Parrot

Registered: 2011-11-29

Posts: 30,518

Website

Re: [SOLVED] wpa_supplicant is connected but without any connection

You've skipped a step (well missed really as it's the last step): you need to get assigned an IP address and identify a name server.  Generally this is done with dhcpcd, but there are a number of other options now including some systemd tools.

---

"UNIX is simple and coherent" - Dennis Ritchie; "GNU's Not Unix" - Richard Stallman

snailer

Member

Registered: 2018-11-15

Posts: 4

Re: [SOLVED] wpa_supplicant is connected but without any connection

You've skipped a step (well missed really as it's the last step): you need to get assigned an IP address and identify a name server.  Generally this is done with dhcpcd, but there are a number of other options now including some systemd tools.

Thanks a lot, I'll study dhcpcd a bit and will come back to report my success!