Hello, I'm experiencing frequent disconnects with the ath9k driver and the AR9485 wireless adapter. This Ubuntu bug report has more information: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/773154 I've tried: * Newer kernels, from stock Ubuntu 12.04, through 3.4.x and staying with 3.5-rc6 now. All kernels show the same problem, although is seems to get better (less disconnects). Running 3.5-rc6 atm. * Switched with wicd, seems to help. The background scanning of network manager makes things worse. * Disabled power management: does not help (at least in the newer kernels it has no effect, in some older ones (<3.2.0) is sort of looked like it did something. * Disable the hw encryption: didn't help. * Disabled 'ani' (don't know what that is, but it didn't help). * Disabled ipv6: didn't help. Things that seems related to the disconnects: * Noisy environment, multiple access points in the neighborhood with the same SSID. * The background scanning from network-manager. With wicd the situation is much more tolerable. * After a sleep/resume cycle is seems worse. Does someone know what the issue might be? Please CC me on any replies - I'm not subscribed to this list. Below is a trace from my kernel log, which shows a disconnect: [ 1453.116807] wlan0: RX AssocResp from 28:10:xx:xx:xx:xx (capab=0x431 status=0 aid=2) [ 1453.116818] wlan0: associated [ 2177.242371] cfg80211: All devices are disconnected, going to restore regulatory settings [ 2177.242387] cfg80211: Restoring regulatory settings [ 2177.242396] cfg80211: Calling CRDA to update world regulatory domain [ 2177.246070] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain [ 2177.249079] cfg80211: World regulatory domain updated: [ 2177.249084] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 2177.249089] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 2177.249094] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 2177.249098] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 2177.249102] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 2177.249106] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 2177.615761] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 2180.097436] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 2182.905090] wlan0: authenticate with 28:10:xx:xx:xx:xx [ 2182.913345] wlan0: send auth to 28:10:xx:xx:xx:xx (try 1/3) [ 2182.915536] wlan0: authenticated [ 2182.924019] wlan0: associate with 28:10:xx:xx:xx:xx (try 1/3) [ 2182.927029] wlan0: RX AssocResp from 28:10:xx:xx:xx:xx (capab=0x431 status=0 aid=2) [ 2182.927040] wlan0: associated [ 2182.927857] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 2182.928095] cfg80211: Calling CRDA for country: GB [ 2182.936422] cfg80211: Updating information on frequency 2412 MHz for a 20 MHz width channel with regulatory rule: [ 2182.936431] cfg80211: 2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A mBi, 2000 mBm) Kind Regards, -- Miek Gieben http://miek.nl
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