Arch Linux Wifi Connection Issues

I am currently in the process of trying to install Arch i686 on an Acer Aspire One 532h (32 bit).

At this point I am still in the LiveCD environment and setting up the wireless connection. However, I am running into a problem with connectivity.

I guess I should say that I have already verified the compatibility for my network adapter. Atheros AR9285 http://www.linuxquestions.org/hcl/showproduct.php/product/4446/cat/160

Also verified it from the Arch command line:

#lspci -k

02:00.0 Network controller: Qualcomm Atheros AR928X Wireless Network Adapter (PCI-Express) (rev 01)
Kernel driver in use: ath9k
Kernel modules: ath9k

# iw dev

says my interface is wlp2s0 (it's the only interface available)

when i try to use:

# wifi-menu

I can select my SSID and enter my password and save the profile

# ip link show wlp2s0

3: wlp2s0: <NO CARRIER, BROADCAST, MULTICAST, UP> mtu 1500.......

# dhcpcd wlp2s0

dhcpcd[2191] version 6.4.2 starting
...   [2198] wlp2s0: starting wpa_supplicant
...   [2201] wlp2s0: failed to start wpa_supplicant
Line 1144: unknown EAP method 'SIM'
dhcpcd[2520]: wlp2s0: waiting for carrier
dhcpcd[2520]: timed out
dhcpcd[2520]: exited

I also created a file at /etc/wpa_supplicant/test.conf very simple consisting of basically the SSID and password not mentioning an EAP, WPA, WEP or any protocol.

 # wpa_supplicant -B -i wlp2s0 -c <(wpa_supplicant/test.conf)

Successfully initialized wpa_supplicant

 # dhcpcd wlp2s0

(I get the same error message as earlier.)

Not sure what I can do at this point. I verified the .sig on the ISO, verified that my network card is supported. Used the simple interface (wifi-menu), used the CLI to create a .conf and execute the wpa_supplicant manually. I am getting a hangup at the dhcp somewhere but not sure where I need to look to diagnose this problem.

Any suggestions?

  • If you used wifi-menu there is no need to create your own wpa_supplicant config file. wifi-menu will handle this. Basically after you run wifi-menu wlp2s0you should have a connection. Did you start it like this? – ap0 Sep 5 '14 at 20:17
  • Of course, I am fairly basic and I chose the easy way but when that failed I started to dig deeper on my own. Is there something I can change in the DHCP setting? How could I get there? Oh, also, not sure if this has any bearing but, initially my wifi connection was hidden. After I looked at the wifi-menu GUI, I didn't see an option for this. I exited and changed my wifi setting to visible then went back to wifi-menu and selected my wifi access point. Could that cause a misconfiguration? – David Sep 5 '14 at 20:25

Try setting the channel mode to auto. Before you do that make sure your wifi interface is down. After that, turn it back up. Solution found here.

$ ip link set wlp2s0 down    
$ iwconfig wlp2s0 channel auto
$ ip link set wlp2s0 up

Also just for your information if you are using Arch Linux for the first time: The Arch Wiki is extremely helpfull and almost everything is covered + troubleshoot for a lot of problems. It is the best Wiki for a Linux destribution. Worth a look! Arch Wiki

  • Thanks, I will give it a try and see what happens. Actually, I do read the wiki (probably too much) and I am often overwhelmed with possibilities. I figured I could ask someone more experienced than I before I try every option available and end up making things worse. :) – David Sep 5 '14 at 20:40
  • 1
    No luck. After this, I tried to reconnect using wifi-menu and I am getting an error "Job for netctl@wlp2s0\x2networkname.service failed. See 'systemctl status netctl......service and 'journalctl -xn' for details. Hmmm... I will look it up and see what I find. – David Sep 5 '14 at 20:52
  • I got it. I just rebooted deleted the /mnt/home directory. Then ran wifi-menu immediately and now I am getting a ping back from www.google.com. :) I guess I added too many steps and made it more complicated than it had to be. Thanks again for your help. – David Sep 5 '14 at 21:28

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