iwlwifi still hangs, clunky workaround

[Paul Wouters]

I'm still seeing the wifi lockup issues on  3.3.2-1.fc17.x86_64.

The logs show:

Apr 26 21:02:53 thinkpad kernel: [262822.181984] iwlwifi 0000:02:00.0: Queue 2 stuck for 2000 ms.
Apr 26 21:02:53 thinkpad kernel: [262822.181992] iwlwifi 0000:02:00.0: Current S W read_ptr 214 write_ptr 218
Apr 26 21:02:53 thinkpad kernel: [262822.182046] iwlwifi 0000:02:00.0: Current H W read_ptr 214 write_ptr 218
Apr 26 21:02:53 thinkpad kernel: [262822.182051] iwlwifi 0000:02:00.0: On demand firmware reload
Apr 26 21:02:53 thinkpad kernel: [262822.182826] ieee80211 phy0: Hardware restar t was requested
Apr 26 21:02:53 thinkpad kernel: [262822.182908] iwlwifi 0000:02:00.0: L1 Enable d; Disabling L0S
Apr 26 21:02:53 thinkpad kernel: [262822.183495] iwlwifi 0000:02:00.0: Radio typ e=0x0-0x3-0x1

A workaround that makes the wifi bearable (but not pleasant) is:

modprobe iwlwifi wd_disable=1

I can still see the failures, but at least it recovers:

64 bytes from 8.8.8.8: icmp_req=617 ttl=54 time=42.9 ms
64 bytes from 8.8.8.8: icmp_req=618 ttl=54 time=46.1 ms
64 bytes from 8.8.8.8: icmp_req=619 ttl=54 time=50.9 ms
64 bytes from 8.8.8.8: icmp_req=620 ttl=54 time=46.3 ms
64 bytes from 8.8.8.8: icmp_req=621 ttl=54 time=48.1 ms
64 bytes from 8.8.8.8: icmp_req=622 ttl=54 time=41.4 ms
64 bytes from 8.8.8.8: icmp_req=623 ttl=54 time=46.3 ms
64 bytes from 8.8.8.8: icmp_req=625 ttl=54 time=2209 ms
64 bytes from 8.8.8.8: icmp_req=626 ttl=54 time=1213 ms
64 bytes from 8.8.8.8: icmp_req=627 ttl=54 time=213 ms
64 bytes from 8.8.8.8: icmp_req=628 ttl=54 time=44.2 ms
64 bytes from 8.8.8.8: icmp_req=629 ttl=54 time=43.3 ms
64 bytes from 8.8.8.8: icmp_req=630 ttl=54 time=44.6 ms
64 bytes from 8.8.8.8: icmp_req=631 ttl=54 time=45.0 ms
64 bytes from 8.8.8.8: icmp_req=632 ttl=54 time=44.3 ms
64 bytes from 8.8.8.8: icmp_req=633 ttl=54 time=44.0 ms

I still get one of these lock ups every 10 to 30 seconds,
but at least I dont have to throw the hardware switch
back and forth on the laptop to recover.

If there is more debug info I can get someone, let me know

Paul