For the first time I just observed that wireless LAN failed on my Asus n55s.
I can assert that this hasn't been happening for weeks. It may be the first time this happens at all on this machine. Wireless LAN has always worked well, and now failing. For the past hour and the half, dmesg spits around 30 messages per second burst rate, a repetition of Jun 29 13:00:29 n55sf-l kernel: [727461.166426] ath: phy0: Chip reset failed Jun 29 13:00:29 n55sf-l kernel: [727461.166428] ath: phy0: Unable to reset channel, reset status -22 Jun 29 13:00:29 n55sf-l kernel: [727461.166432] ath: phy0: Unable to set channel Jun 29 13:00:29 n55sf-l kernel: [727461.180256] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff Jun 29 13:00:29 n55sf-l kernel: [727461.180268] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up Jun 29 13:00:29 n55sf-l kernel: [727461.251940] ath: phy0: Failed to stop TX DMA, queues=0x10f! FWIW, here are the first messages before that endless loop : Jun 29 12:33:45 n55sf-l kernel: [725859.090225] irq 17: nobody cared (try booting with the "irqpoll" option) Jun 29 12:33:45 n55sf-l kernel: [725859.090240] Pid: 0, comm: swapper/0 Tainted: G O 3.5.0-34-generic #55-Ubuntu Jun 29 12:33:45 n55sf-l kernel: [725859.090244] Call Trace: Jun 29 12:33:45 n55sf-l kernel: [725859.090248] <IRQ> [<ffffffff810e1a8d>] __report_bad_irq+0x3d/0xe0 Jun 29 12:33:45 n55sf-l kernel: [725859.090269] [<ffffffff810e1f52>] note_interrupt+0x1c2/0x210 Jun 29 12:33:45 n55sf-l kernel: [725859.090282] [<ffffffff81391f8a>] ? intel_idle+0xea/0x150 Jun 29 12:33:45 n55sf-l kernel: [725859.090292] [<ffffffff810df6f7>] handle_irq_event_percpu+0xa7/0x1f0 Jun 29 12:33:45 n55sf-l kernel: [725859.090300] [<ffffffff810df88e>] handle_irq_event+0x4e/0x80 Jun 29 12:33:45 n55sf-l kernel: [725859.090307] [<ffffffff810e2a8a>] handle_fasteoi_irq+0x5a/0x100 Jun 29 12:33:45 n55sf-l kernel: [725859.090319] [<ffffffff81015072>] handle_irq+0x22/0x40 Jun 29 12:33:45 n55sf-l kernel: [725859.090328] [<ffffffff8168c08a>] do_IRQ+0x5a/0xe0 Jun 29 12:33:45 n55sf-l kernel: [725859.090340] [<ffffffff8168262a>] common_interrupt+0x6a/0x6a Jun 29 12:33:45 n55sf-l kernel: [725859.090343] <EOI> [<ffffffff81391f8a>] ? intel_idle+0xea/0x150 Jun 29 12:33:45 n55sf-l kernel: [725859.090359] [<ffffffff81391f6b>] ? intel_idle+0xcb/0x150 Jun 29 12:33:45 n55sf-l kernel: [725859.090371] [<ffffffff81525f09>] cpuidle_enter+0x19/0x20 Jun 29 12:33:45 n55sf-l kernel: [725859.090378] [<ffffffff81526549>] cpuidle_idle_call+0xa9/0x240 Jun 29 12:33:45 n55sf-l kernel: [725859.090386] [<ffffffff8101c45f>] cpu_idle+0xaf/0x120 Jun 29 12:33:45 n55sf-l kernel: [725859.090394] [<ffffffff8164f52e>] rest_init+0x72/0x74 Jun 29 12:33:45 n55sf-l kernel: [725859.090405] [<ffffffff81cf3bf3>] start_kernel+0x3cf/0x3dc Jun 29 12:33:45 n55sf-l kernel: [725859.090414] [<ffffffff81cf3673>] ? do_early_param+0x91/0x91 Jun 29 12:33:45 n55sf-l kernel: [725859.090424] [<ffffffff81cf3356>] x86_64_start_reservations+0x131/0x135 Jun 29 12:33:45 n55sf-l kernel: [725859.090432] [<ffffffff81cf345a>] x86_64_start_kernel+0x100/0x10f Jun 29 12:33:45 n55sf-l kernel: [725859.090436] handlers: Jun 29 12:33:45 n55sf-l kernel: [725859.090458] [<ffffffffa03cf370>] ath_isr [ath9k] Jun 29 12:33:45 n55sf-l kernel: [725859.090464] Disabling IRQ #17 Jun 29 12:33:46 n55sf-l wpa_supplicant[8690]: wlan0: CTRL-EVENT-DISCONNECTED bssid=e2:7d:2b:89:47:58 reason=4 Jun 29 12:33:46 n55sf-l kernel: [725859.398377] cfg80211: All devices are disconnected, going to restore regulatory settings Jun 29 12:33:46 n55sf-l kernel: [725859.398388] cfg80211: Restoring regulatory settings Jun 29 12:33:46 n55sf-l NetworkManager[1136]: <info> (wlan0): supplicant interface state: completed -> disconnected Jun 29 12:33:46 n55sf-l kernel: [725859.406889] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain Jun 29 12:33:46 n55sf-l kernel: [725859.406930] cfg80211: World regulatory domain updated: Jun 29 12:33:46 n55sf-l kernel: [725859.406934] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) Jun 29 12:33:46 n55sf-l kernel: [725859.406940] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Jun 29 12:33:46 n55sf-l kernel: [725859.406945] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Jun 29 12:33:46 n55sf-l kernel: [725859.406949] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Jun 29 12:33:46 n55sf-l kernel: [725859.406953] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Jun 29 12:33:46 n55sf-l kernel: [725859.406958] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Jun 29 12:33:46 n55sf-l kernel: [725859.927455] ath: phy0: RX failed to go idle in 10 ms RXSM=0xffffffff Jun 29 12:33:46 n55sf-l kernel: [725859.941833] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff Jun 29 12:33:46 n55sf-l kernel: [725859.953068] ath: phy0: Failed to wakeup in 500us Jun 29 12:33:46 n55sf-l kernel: [725860.080681] ath: phy0: RX failed to go idle in 10 ms RXSM=0xffffffff Jun 29 12:33:46 n55sf-l kernel: [725860.095067] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff Jun 29 12:33:46 n55sf-l kernel: [725860.106523] ath: phy0: Failed to wakeup in 500us Jun 29 12:33:46 n55sf-l kernel: [725860.121129] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff Jun 29 12:33:46 n55sf-l kernel: [725860.121337] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up Jun 29 12:33:47 n55sf-l kernel: [725860.192400] ath: phy0: Failed to stop TX DMA, queues=0x10f! Jun 29 12:33:47 n55sf-l NetworkManager[1136]: <info> (wlan0): supplicant interface state: disconnected -> scanning Jun 29 12:33:47 n55sf-l kernel: [725860.313940] ath: phy0: Chip reset failed Jun 29 12:33:47 n55sf-l kernel: [725860.313942] ath: phy0: Unable to reset channel, reset status -22 Jun 29 12:33:47 n55sf-l kernel: [725860.313949] ath: phy0: Unable to set channel Jun 29 12:33:47 n55sf-l kernel: [725860.328774] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff Jun 29 12:33:47 n55sf-l kernel: [725860.328853] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up Jun 29 12:33:47 n55sf-l kernel: [725860.402135] ath: phy0: Failed to stop TX DMA, queues=0x10f! Jun 29 12:33:47 n55sf-l kernel: [725860.524528] ath: phy0: Chip reset failed Jun 29 12:33:47 n55sf-l kernel: [725860.524536] ath: phy0: Unable to reset channel, reset status -22 Jun 29 12:33:47 n55sf-l kernel: [725860.524552] ath: phy0: Unable to set channel Jun 29 12:33:47 n55sf-l kernel: [725860.538379] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff Jun 29 12:33:47 n55sf-l kernel: [725860.538442] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up Jun 29 12:33:47 n55sf-l kernel: [725860.611700] ath: phy0: Failed to stop TX DMA, queues=0x10f! Jun 29 12:33:47 n55sf-l kernel: [725860.733297] ath: phy0: Chip reset failed Jun 29 12:33:47 n55sf-l kernel: [725860.733305] ath: phy0: Unable to reset channel, reset status -22 Jun 29 12:33:47 n55sf-l kernel: [725860.733324] ath: phy0: Unable to set channel Jun 29 12:33:47 n55sf-l kernel: [725860.746947] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff Jun 29 12:33:47 n55sf-l kernel: [725860.746972] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up Jun 29 12:33:47 n55sf-l kernel: [725860.819032] ath: phy0: Failed to stop TX DMA, queues=0x10f! Jun 29 12:33:47 n55sf-l kernel: [725860.942818] ath: phy0: Chip reset failed Jun 29 12:33:47 n55sf-l kernel: [725860.942820] ath: phy0: Unable to reset channel, reset status -22 Jun 29 12:33:47 n55sf-l kernel: [725860.942823] ath: phy0: Unable to set channel Jun 29 12:33:47 n55sf-l kernel: [725860.957342] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff Jun 29 12:33:47 n55sf-l kernel: [725860.957364] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up Jun 29 12:33:47 n55sf-l kernel: [725861.034030] ath: phy0: Failed to stop TX DMA, queues=0x10f! The machine still operates with wired Ethernet connection. Interestingly, the loop pauses sometimes. You'll find attached the result of grep -o ^............... /var/log/kern.log | uniq -c which shows some patterns in the number of log lines at each second. The machine has not rebooted or anything, so if you think there's something I can do to help fix the bug, please ask. Jun 29 14:00:30 n55sf-l kernel: [731057.433681] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up Jun 29 14:00:30 n55sf-l kernel: [731057.503686] ath: phy0: Failed to stop TX DMA, queues=0x10f! Jun 29 14:00:30 n55sf-l kernel: [731057.625638] ath: phy0: Chip reset failed Jun 29 14:00:30 n55sf-l kernel: [731057.625647] ath: phy0: Unable to reset channel, reset status -22 Jun 29 14:00:30 n55sf-l kernel: [731057.625663] ath: phy0: Unable to set channel Jun 29 14:02:26 n55sf-l kernel: [731174.236655] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff Jun 29 14:02:26 n55sf-l kernel: [731174.236665] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up Jun 29 14:02:27 n55sf-l kernel: [731174.311893] ath: phy0: Failed to stop TX DMA, queues=0x10f! Jun 29 14:02:27 n55sf-l kernel: [731174.433342] ath: phy0: Chip reset failed Jun 29 14:02:27 n55sf-l kernel: [731174.433345] ath: phy0: Unable to reset channel, reset status -22 Jun 29 14:02:27 n55sf-l kernel: [731174.433349] ath: phy0: Unable to set channel Jun 29 14:02:27 n55sf-l kernel: [731174.446896] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW ** Attachment added: "grep -o ^............... /var/log/kern.log | uniq -c which shows some patterns in the number of log lines at each second." https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1016181/+attachment/3717995/+files/dmesg_pattern.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1016181 Title: ath chip reset failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1016181/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
