Arch Linux

gee

Member

Registered: 2006-11-29

Posts: 313

Not able to connect to my network since upgrade 2 days ago

Hello,

1 of my machines is unable to connect wirelessly to my network now.
It usually is on NetworkManager, and fails at the "setting address" stage.
I switched to manual setup to see where it fails and this I what I have:

ip link set dev wl works
rfkill indicates no block
wpa_supplican connects
BUT
that's where it stops, I cannot get a DHCP lease with either dhclient or dhcpcd.
They both timeout with nothing.

Strangely when I look at my router's log file, I see the requests coming but they are a bit strange, requests coming from this machine are as this:

Jun 28 22:19:28 tomato daemon.info dnsmasq-dhcp[898]: DHCPDISCOVER(br0) 192.168.1.114 <MAC ADDRESS>
Jun 28 22:19:28 tomato daemon.info dnsmasq-dhcp[898]: DHCPOFFER(br0) 192.168.1.114 <MAC ADDRESS>
Jun 28 22:19:44 tomato daemon.info dnsmasq-dhcp[898]: DHCPDISCOVER(br0) 192.168.1.114 <MAC ADDRESS>
Jun 28 22:19:44 tomato daemon.info dnsmasq-dhcp[898]: DHCPOFFER(br0) 192.168.1.114 <MAC ADDRESS>
Jun 28 22:19:51 tomato daemon.info dnsmasq-dhcp[898]: DHCPDISCOVER(br0) 192.168.1.114 <MAC ADDRESS>
Jun 28 22:19:51 tomato daemon.info dnsmasq-dhcp[898]: DHCPOFFER(br0) 192.168.1.114 <MAC ADDRESS>
Jun 28 22:19:59 tomato daemon.info dnsmasq-dhcp[898]: DHCPDISCOVER(br0) 192.168.1.114 <MAC ADDRESS>
Jun 28 22:19:59 tomato daemon.info dnsmasq-dhcp[898]: DHCPOFFER(br0) 192.168.1.114 <MAC ADDRESS>
...

While for machines that connect it looks like this:

Jun 28 22:13:41 tomato daemon.info dnsmasq-dhcp[480]: DHCPDISCOVER(br0) 192.168.1.108 <OTHER MAC ADDRESS>
Jun 28 22:13:41 tomato daemon.info dnsmasq-dhcp[480]: DHCPOFFER(br0) 192.168.1.108 <OTHER MAC ADDRESS>
Jun 28 22:13:41 tomato daemon.info dnsmasq-dhcp[480]: DHCPREQUEST(br0) 192.168.1.108 <OTHER MAC ADDRESS>
Jun 28 22:13:41 tomato daemon.info dnsmasq-dhcp[480]: DHCPACK(br0) 192.168.1.108 <OTHER MAC ADDRESS> <HOSTNAME>

What does the one having issue not send the DHCPREQUEST?
I assume the ACK is coming from the router in exchange for the REQUEST.

Thanks!

fg

Member

Registered: 2014-06-29

Posts: 1

Re: Not able to connect to my network since upgrade 2 days ago

Hi. I had the same issue.
In my case it was caused by this bug: https://bugzilla.kernel.org/show_bug.cgi?id=78581
I solved it by downgrading the kernel, but there is also a workaround: setting the modprobe to "options ath9k_htc nohwcrypt=1" (I haven't yet tested this).

EDIT: The workaround works fine, I've just tested it. Simply create a file named /etc/modprobe.d/ath9k_htc.conf with the line "options ath9k_htc nohwcrypt=1", then reload the ath9k_htc module.

Last edited by fg (2014-07-01 12:02:01)

gee

Member

Registered: 2006-11-29

Posts: 313

Re: Not able to connect to my network since upgrade 2 days ago

the modprobe.d trick worked thanks so much!
I can't believe I didn't even try to rollback the kernel this time...
You saved me!

gee

Member

Registered: 2006-11-29

Posts: 313

Re: Not able to connect to my network since upgrade 2 days ago

Damn, I had not realized another machine had a similar problem.
Although that one could connect to the network every time, it was super slow... using the trick worked there as well!

So thanks again

jasonwryan

Anarchist

From: .nz

Registered: 2009-05-09

Posts: 30,426

Website

Re: Not able to connect to my network since upgrade 2 days ago

Please remember to mark your thread as [Solved] by editing your first post and prepending it to the title.

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Carl Karl

Member

Registered: 2013-06-12

Posts: 231

Re: Not able to connect to my network since upgrade 2 days ago

Yesterdays update improved WLAN connectivity dramatically for me (which was really an issue last weeks). So you might drop the workaround now...