Bug#622971: Ath9K wireless quite unreliable since upgrade to 2.6.38
Package: linux-2.6
Followup-For: Bug #622971
I'm seeing this as well, with 2.6.38-2-amd64, but also with .37.
For me, modprobe doesn't fix the problem. I have to reboot each time.
Sometimes the failure happens immediately after booting, but sometimes
the wifi connection will work for an hour or more with no problem.
I've seen the problem on both encrypted and unencrypted networks, and
on n, g, and b.
03:00.0 Network controller: Atheros Communications Inc. AR9287 Wireless Network Adapter (PCI-Express) (rev 01)
is the card, in an X200T with a modified BIOS.
Here is the log with 2.6.38-2:
[ 3098.366985] ath: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
[ 3098.366992] ath: Could not stop RX, we could be confusing the DMA engine when we start RX up
[ 3098.479251] ath: Chip reset failed
[ 3098.479258] ath: Unable to reset channel (2462 MHz), reset status -22
[ 3103.153855] ath: Chip reset failed
[ 3103.153866] ath: Unable to reset channel (2462 MHz), reset status -22
[ 3103.301806] ath: Unable to set channel
[ 3103.301844] ath: Unable to set channel
[ 3103.301855] ath: Unable to set channel
[ 3103.301867] ath: Unable to set channel
[ 3103.301878] ath: Unable to set channel
[ 3103.301889] ath: Unable to set channel
[ 3103.301900] ath: Unable to set channel
[ 3103.301913] ath: Unable to set channel
[ 3103.301925] ath: Unable to set channel
[ 3103.301937] ath: Unable to set channel
[ 3103.301949] ath: Unable to set channel
[ 3103.301960] ath: Unable to set channel
[ 3103.301973] ath: Unable to set channel
[ 3103.301990] ath: Unable to set channel
[ 3103.314363] ath: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
[ 3103.314370] ath: Could not stop RX, we could be confusing the DMA engine when we start RX up
[ 3103.426607] ath: Chip reset failed
[ 3103.426612] ath: Unable to reset channel (2462 MHz), reset status -22
Here is the log after the same symptoms with 2.6.37-2:
[ 881.422964] irq 17: nobody cared (try booting with the "irqpoll" option)
[ 881.422976] Pid: 0, comm: kworker/0:0 Not tainted 2.6.37-2-amd64 #1
[ 881.422983] Call Trace:
[ 881.422988] <IRQ> [<ffffffff8109313d>] ? __report_bad_irq+0x30/0x80
[ 881.423010] [<ffffffff810932b4>] ? note_interrupt+0x127/0x19f
[ 881.423021] [<ffffffff8100f6dd>] ? sched_clock+0x5/0x8
[ 881.423030] [<ffffffff81093c93>] ? handle_fasteoi_irq+0xcc/0xf7
[ 881.423038] [<ffffffff8100bf50>] ? handle_irq+0x17/0x1f
[ 881.423046] [<ffffffff8100b60b>] ? do_IRQ+0x50/0xb5
[ 881.423056] [<ffffffff8131eed3>] ? ret_from_intr+0x0/0x11
[ 881.423060] <EOI> [<ffffffffa0327082>] ? acpi_idle_enter_simple+0xd4/0x106 [processor]
[ 881.423106] [<ffffffffa032707b>] ? acpi_idle_enter_simple+0xcd/0x106 [processor]
[ 881.423117] [<ffffffff81252e0a>] ? cpuidle_idle_call+0xa2/0x108
[ 881.423125] [<ffffffff81008bcb>] ? cpu_idle+0xb2/0x124
[ 881.423133] [<ffffffff81317d32>] ? start_secondary+0x1e5/0x1eb
[ 881.423138] handlers:
[ 881.423142] [<ffffffffa002bc4d>] (usb_hcd_irq+0x0/0x75 [usbcore])
[ 881.423167] [<ffffffffa00a61df>] (ath_isr+0x0/0x1c9 [ath9k])
[ 881.423183] Disabling IRQ #17
[ 884.504068] ieee80211 phy0: wlan1: No probe response from AP 00:30:bd:c0:d0:84 after 500ms, disconnecting.
[ 884.838149] cfg80211: Calling CRDA to update world regulatory domain
[ 887.200420] e1000e 0000:00:19.0: irq 43 for MSI/MSI-X
[ 887.256207] e1000e 0000:00:19.0: irq 43 for MSI/MSI-X
[ 887.256925] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 891.034884] ADDRCONF(NETDEV_UP): wlan1: link is not ready
[ 923.096790] ath9k 0000:03:00.0: PCI INT A disabled
[ 923.096840] ath9k: Driver unloaded
[ 938.051032] cfg80211: Calling CRDA to update world regulatory domain
[ 938.082386] ath9k 0000:03:00.0: enabling device (0000 -> 0002)
[ 938.082398] ath9k 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 938.082420] ath9k 0000:03:00.0: setting latency timer to 64
[ 938.212592] ath9k 0000:03:00.0: Failed to initialize device
[ 938.212622] ath9k 0000:03:00.0: PCI INT A disabled
[ 938.212640] ath9k: probe of 0000:03:00.0 failed with error -5
[ 939.118243] irq 17: nobody cared (try booting with the "irqpoll" option)
[ 939.118254] Pid: 0, comm: swapper Not tainted 2.6.37-2-amd64 #1
[ 939.118261] Call Trace:
[ 939.118265] <IRQ> [<ffffffff8109313d>] ? __report_bad_irq+0x30/0x80
[ 939.118287] [<ffffffff810932b4>] ? note_interrupt+0x127/0x19f
[ 939.118298] [<ffffffff8100f6dd>] ? sched_clock+0x5/0x8
[ 939.118307] [<ffffffff81093c93>] ? handle_fasteoi_irq+0xcc/0xf7
[ 939.118315] [<ffffffff8100bf50>] ? handle_irq+0x17/0x1f
[ 939.118322] [<ffffffff8100b60b>] ? do_IRQ+0x50/0xb5
[ 939.118333] [<ffffffff8131eed3>] ? ret_from_intr+0x0/0x11
[ 939.118337] <EOI> [<ffffffffa0326cf7>] ? acpi_idle_enter_c1+0x9b/0xb7 [processor]
[ 939.118374] [<ffffffffa0326cd3>] ? acpi_idle_enter_c1+0x77/0xb7 [processor]
[ 939.118385] [<ffffffff81252e0a>] ? cpuidle_idle_call+0xa2/0x108
[ 939.118393] [<ffffffff81008bcb>] ? cpu_idle+0xb2/0x124
[ 939.118403] [<ffffffff8169ad5d>] ? start_kernel+0x3c9/0x3d4
[ 939.118412] [<ffffffff8169a3cd>] ? x86_64_start_kernel+0x107/0x114
[ 939.118417] handlers:
[ 939.118420] [<ffffffffa002bc4d>] (usb_hcd_irq+0x0/0x75 [usbcore])
[ 939.118442] Disabling IRQ #17
Happy to provide more info.
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.38-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
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