Hi, ath9k is giving me hard time. Roughly once in two days I get ath9k DMA timeouts and I need to reload the modules to get wireless working again. I'm using Ubuntu 10.04 on Samsung X120 laptop and mostly running latest wireless-testing and connman. Here's the wireless init output: [ 1045.894275] cfg80211: Calling CRDA to update world regulatory domain [ 1045.913908] cfg80211: World regulatory domain updated: [ 1045.913913] (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 1045.913919] (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 1045.913924] (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 1045.913929] (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 1045.913934] (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 1045.913939] (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 1045.996991] ath9k 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 1045.997026] ath9k 0000:02:00.0: setting latency timer to 64 [ 1046.001673] ath: Using ANI v1 [ 1046.049993] ath: EEPROM regdomain: 0x65 [ 1046.049997] ath: EEPROM indicates we should expect a direct regpair map [ 1046.050026] ath: Country alpha2 being used: 00 [ 1046.050029] ath: Regpair used: 0x65 [ 1046.079355] phy0: Selected rate control algorithm 'ath9k_rate_control' [ 1046.101669] Registered led device: ath9k-phy0::radio [ 1046.101773] Registered led device: ath9k-phy0::assoc [ 1046.102228] Registered led device: ath9k-phy0::tx [ 1046.103727] Registered led device: ath9k-phy0::rx [ 1046.103742] phy0: Atheros AR9285 Rev:2 mem=0xffffc90023e40000, irq=16 [ 1046.135555] ADDRCONF(NETDEV_UP): wlan0: link is not ready Here's a summary of my DMA timeout errors from the last week: Aug 22 10:07:32 tukki kernel: [ 8823.456281] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 23 10:46:10 tukki kernel: [ 7568.356857] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 23 14:40:07 tukki kernel: [21605.306715] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 23 15:14:38 tukki kernel: [23676.356962] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 23 21:02:51 tukki kernel: [44593.927002] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 25 01:32:34 tukki kernel: [147176.706583] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 25 02:46:35 tukki kernel: [151617.916610] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 25 06:04:44 tukki kernel: [163507.226523] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 25 06:40:46 tukki kernel: [165669.320942] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 27 07:24:22 tukki kernel: [295831.816618] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 27 08:14:19 tukki kernel: [298829.036579] ath9k: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:51:59 tukki kernel: [17222.142872] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:51:59 tukki kernel: [17222.155239] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:52:00 tukki kernel: [17223.012741] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:52:00 tukki kernel: [17223.025097] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:53:29 tukki kernel: [17312.614445] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:53:29 tukki kernel: [17312.626871] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:53:30 tukki kernel: [17313.363159] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:53:30 tukki kernel: [17313.375578] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:53:30 tukki kernel: [17313.453257] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:53:30 tukki kernel: [17313.465683] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:53:30 tukki kernel: [17313.542603] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:53:30 tukki kernel: [17313.555034] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:53:32 tukki kernel: [17315.692627] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:53:32 tukki kernel: [17315.705034] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:53:33 tukki kernel: [17316.082630] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:53:33 tukki kernel: [17316.094841] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:53:35 tukki kernel: [17318.242727] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:53:35 tukki kernel: [17318.255113] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:53:35 tukki kernel: [17318.512565] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:53:35 tukki kernel: [17318.524929] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:53:35 tukki kernel: [17318.842563] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:53:35 tukki kernel: [17318.854820] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:53:36 tukki kernel: [17319.772547] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:53:36 tukki kernel: [17319.784904] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 Aug 28 11:53:37 tukki kernel: [17320.163131] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x00000020 Aug 28 11:53:37 tukki kernel: [17320.175362] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x020000 I believe the "ath9k:" version of the error messages is from the Ubuntu 10.04 kernel which I was forced to use until I disabled broken ecryptfs setup in my laptop. Any ideas what's wrong and how to fix this? I can provide more info and logs, but I have to warn that it will take some time for me to take them. My backlog is too long again :) -- Kalle Valo -- 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
