Wifi laggy in RC2 - was: FreeBSD 11 RC1 - no wifi

[Stefan Wendler]

On 08/26/2016 05:17, lenz wrote:
> I run a X1 Carbon 4th gen and can report that the iwm driver now runs very
> reliable with RC2, reliable enough that I moved it back into loader.conf
> and did not see any panics after a bunch or reboots. Thanks for the good
> work on this :)
> 
> cheers
> Lenz
> 
With my W530 Wifi with iwn works now without the lagg config as well as
with the patch from here
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211689#c4 and lagg config

Anyway. I have switched now to my T540p with a 7260AC wifi chip. When I
load iwm during boot, the computer crashes and enters a boot loop until
I disable iwm at the loader prompt. I can then load it manually after
boot and have wifi for some time. But it is pretty laggy and reconnects
every 5 minutes or so with the following dmesg entry.

------ dmesg ------
wlan0: link state changed to DOWN
wlan0: ieee80211_new_state_locked: pending SCAN -> ASSOC transition lost
iwm0: iwm_update_edca: called
iwm0: dumping device error log
iwm0: Start Error Log Dump:
iwm0: Status: 0x3, count: 6
iwm0: 0x00000086 | NMI_INTERRUPT_INST_ACTION_PT
iwm0: 000002F0 | trm_hw_status0
iwm0: 00000000 | trm_hw_status1
iwm0: 00000B2C | branchlink2
iwm0: 00016A90 | interruptlink1
iwm0: 00015A28 | interruptlink2
iwm0: 00000000 | data1
iwm0: 00000004 | data2
iwm0: 07030000 | data3
iwm0: 00307A6F | beacon time
iwm0: 000F858F | tsf low
iwm0: 00000000 | tsf hi
iwm0: 00000000 | time gp1
iwm0: 000F8590 | time gp2
iwm0: 00000000 | uCode revision type
iwm0: 00000010 | uCode version major
iwm0: 0003B2EE | uCode version minor
iwm0: 00000144 | hw version
iwm0: 00009004 | board version
iwm0: 0000001C | hcmd
iwm0: 00022088 | isr0
iwm0: 00800000 | isr1
iwm0: 00000002 | isr2
iwm0: 004034C1 | isr3
iwm0: 00000000 | isr4
iwm0: 01010112 | last cmd Id
iwm0: 00000000 | wait_event
iwm0: 000000A0 | l2p_control
iwm0: 00000000 | l2p_duration
iwm0: 00000000 | l2p_mhvalid
iwm0: 00000000 | l2p_addr_match
iwm0: 00000007 | lmpm_pmg_sel
iwm0: 22121936 | timestamp
iwm0: 00342028 | flow_handler
iwm0: driver status:
iwm0:   tx ring  0: qid=0  cur=2   queued=2
iwm0:   tx ring  1: qid=1  cur=0   queued=0
iwm0:   tx ring  2: qid=2  cur=0   queued=0
iwm0:   tx ring  3: qid=3  cur=0   queued=0
iwm0:   tx ring  4: qid=4  cur=0   queued=0
iwm0:   tx ring  5: qid=5  cur=0   queued=0
iwm0:   tx ring  6: qid=6  cur=0   queued=0
iwm0:   tx ring  7: qid=7  cur=0   queued=0
iwm0:   tx ring  8: qid=8  cur=0   queued=0
iwm0:   tx ring  9: qid=9  cur=34  queued=0
iwm0:   tx ring 10: qid=10 cur=0   queued=0
iwm0:   tx ring 11: qid=11 cur=0   queued=0
iwm0:   tx ring 12: qid=12 cur=0   queued=0
iwm0:   tx ring 13: qid=13 cur=0   queued=0
iwm0:   tx ring 14: qid=14 cur=0   queued=0
iwm0:   tx ring 15: qid=15 cur=0   queued=0
iwm0:   tx ring 16: qid=16 cur=0   queued=0
iwm0:   tx ring 17: qid=17 cur=0   queued=0
iwm0:   tx ring 18: qid=18 cur=0   queued=0
iwm0:   tx ring 19: qid=19 cur=0   queued=0
iwm0:   tx ring 20: qid=20 cur=0   queued=0
iwm0:   tx ring 21: qid=21 cur=0   queued=0
iwm0:   tx ring 22: qid=22 cur=0   queued=0
iwm0:   tx ring 23: qid=23 cur=0   queued=0
iwm0:   tx ring 24: qid=24 cur=0   queued=0
iwm0:   tx ring 25: qid=25 cur=0   queued=0
iwm0:   tx ring 26: qid=26 cur=0   queued=0
iwm0:   tx ring 27: qid=27 cur=0   queued=0
iwm0:   tx ring 28: qid=28 cur=0   queued=0
iwm0:   tx ring 29: qid=29 cur=0   queued=0
iwm0:   tx ring 30: qid=30 cur=0   queued=0
iwm0:   rx ring: cur=34
iwm0:   802.11 state 1
iwm0: iwm_intr: controller panicked, iv_state = 1; restarting
wlan0: ieee80211_new_state_locked: pending SCAN -> AUTH transition lost
iwm0: PHY ctxt cmd error. ret=35
iwm0: iwm_auth: failed add phy ctxt!
iwm0: iwm_newstate: could not move to auth state: 60
iwm0: iwm_update_edca: called
iwm0: iwm_update_edca: called
iwm0: iwm_update_edca: called
wlan0: link state changed to UP
------ end dmesg ------

Cheers,
Stefan