Hi Mariano, > I've been also experiencing the "fail to flush tx fifo" bug for a > long time, so I'll provide my environment and logs in case it's > helpful: > > - System: Thinkpad T410 > - Chipset: Intel Corporation Centrino Advanced-N 6200 [8086:4239] (rev 35) > - Kernel: 3.10.0 x86_64 (tried 3.2, 3.5, 3.8 and 3.9 also. It got a > lot better on 3.10 btw) > - Firmware: 9.221.4.1 build 25532 > - AP: Linksys E1200 fw ver 1.0.00 build 11 (but happens also with > other N AP's) > - Log on dmesg: this repeated 12 times when I booted and connected > to my wifi network > > [ 19.576029] iwlwifi 0000:03:00.0: fail to flush all tx fifo queues Q 0 > [ 19.576039] iwlwifi 0000:03:00.0: Current SW read_ptr 3 write_ptr 4 > [ 19.576089] iwl data: 00000000: 08 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 ................ > [ 19.576125] iwlwifi 0000:03:00.0: FH TRBs(0) = 0x00000000 > [ 19.576183] iwlwifi 0000:03:00.0: FH TRBs(1) = 0x80102004 > [ 19.576196] iwlwifi 0000:03:00.0: FH TRBs(2) = 0x00000000 > [ 19.576209] iwlwifi 0000:03:00.0: FH TRBs(3) = 0x80300003 > [ 19.576222] iwlwifi 0000:03:00.0: FH TRBs(4) = 0x00000000 > [ 19.576235] iwlwifi 0000:03:00.0: FH TRBs(5) = 0x00000000 > [ 19.576248] iwlwifi 0000:03:00.0: FH TRBs(6) = 0x00000000 > [ 19.576261] iwlwifi 0000:03:00.0: FH TRBs(7) = 0x00704040 > [ 19.576317] iwlwifi 0000:03:00.0: Q 0 is active and mapped to fifo > 3 ra_tid 0x0000 [3,4] > [ 19.576373] iwlwifi 0000:03:00.0: Q 1 is active and mapped to fifo > 2 ra_tid 0x0000 [0,0] > [ 19.576429] iwlwifi 0000:03:00.0: Q 2 is active and mapped to fifo > 1 ra_tid 0x0000 [4,5] > [ 19.576484] iwlwifi 0000:03:00.0: Q 3 is active and mapped to fifo > 0 ra_tid 0x0000 [0,0] > [ 19.576540] iwlwifi 0000:03:00.0: Q 4 is active and mapped to fifo > 7 ra_tid 0x0000 [65,65] > [ 19.576595] iwlwifi 0000:03:00.0: Q 5 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.576651] iwlwifi 0000:03:00.0: Q 6 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.576705] iwlwifi 0000:03:00.0: Q 7 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.576761] iwlwifi 0000:03:00.0: Q 8 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.576815] iwlwifi 0000:03:00.0: Q 9 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.576871] iwlwifi 0000:03:00.0: Q 10 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.576928] iwlwifi 0000:03:00.0: Q 11 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.576983] iwlwifi 0000:03:00.0: Q 12 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.577038] iwlwifi 0000:03:00.0: Q 13 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.577094] iwlwifi 0000:03:00.0: Q 14 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.577149] iwlwifi 0000:03:00.0: Q 15 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.577204] iwlwifi 0000:03:00.0: Q 16 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.577261] iwlwifi 0000:03:00.0: Q 17 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.577317] iwlwifi 0000:03:00.0: Q 18 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.577372] iwlwifi 0000:03:00.0: Q 19 is inactive and mapped to > fifo 0 ra_tid 0x0000 [0,0] > [ 19.628329] cfg80211: Calling CRDA to update world regulatory domain > [ 19.632242] cfg80211: World regulatory domain updated: > [ 19.632245] cfg80211: (start_freq - end_freq @ bandwidth), > (max_antenna_gain, max_eirp) > [ 19.632247] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), > (300 mBi, 2000 mBm) > [ 19.632249] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), > (300 mBi, 2000 mBm) > [ 19.632250] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), > (300 mBi, 2000 mBm) > [ 19.632252] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), > (300 mBi, 2000 mBm) > [ 19.632253] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), > (300 mBi, 2000 mBm) > [ 23.041735] wlan0: authenticate with 58:6d:8f:c3:47:2e > [ 23.068235] wlan0: send auth to 58:6d:8f:c3:47:2e (try 1/3) > [ 23.081353] wlan0: authenticated > [ 23.082190] wlan0: associate with 58:6d:8f:c3:47:2e (try 1/3) > [ 23.085720] wlan0: RX AssocResp from 58:6d:8f:c3:47:2e (capab=0x411 > status=0 aid=6) > [ 23.091628] wlan0: associated > > This does not always happen, it's kind of random. I think it > happens more frequently in places with a lot of wifi networks > available. > I'll try with older firmwares as suggested and let you know. I can > provide more info if you need. > Yes, we know about this. You are (really) not the first to complain. Unfortunately, I can't point to any fix right now. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
