Hi everyone! Adapter usb: TP-LINK TL-WN821N v3 I have to be using different versions of ubuntu (x86, x64), to be using Fedora 16. And everywhere there was a same problem. Now I use last stable kernel 3.3.3. After several hours the adapter stops working as an access point. I use a hostapd. After a while, disappear my SSID. I'm stoping hostapd and trying to unload a module ath9k_htc, but it does not work, "modprobe -r ath9k_htc" hangs, in the log appear messages: Apr 24 01:52:23 s1 kernel: [37922.288169] irqbalance D 00000000 0 721 1 0x00000000 Apr 24 01:52:23 s1 kernel: [37922.288176] f7009e30 00000082 00000bf2 00000000 00000000 f5090000 c1809a00 c1809a00 Apr 24 01:52:23 s1 kernel: [37922.288186] 815aee29 00002215 f7907a00 f7371960 f5090000 00000000 f57c4000 f6ef6dd8 Apr 24 01:52:23 s1 kernel: [37922.288196] f7009e1c c110c2ee fffa6a10 f6ef6dd8 00000029 00000000 f7355cb8 b7742000 Apr 24 01:52:23 s1 kernel: [37922.288206] Call Trace: Apr 24 01:52:23 s1 kernel: [37922.288218] [<c110c2ee>] ? handle_mm_fault+0x15e/0x2c0 Apr 24 01:52:23 s1 kernel: [37922.288226] [<c14f82f7>] ? do_page_fault+0x227/0x490 Apr 24 01:52:23 s1 kernel: [37922.288231] [<c14f4025>] schedule+0x35/0x50 Apr 24 01:52:23 s1 kernel: [37922.288236] [<c14f2fb6>] __mutex_lock_slowpath+0xc6/0x120 Apr 24 01:52:23 s1 kernel: [37922.288243] [<c14f2c64>] mutex_lock+0x24/0x40 Apr 24 01:52:23 s1 kernel: [37922.288248] [<c144ba72>] rtnl_lock+0x12/0x20 Apr 24 01:52:23 s1 kernel: [37922.288253] [<c14423d0>] dev_ioctl+0x1a0/0x500 Apr 24 01:52:23 s1 kernel: [37922.288260] [<c112797d>] ? kmem_cache_alloc_trace+0xfd/0x130 Apr 24 01:52:23 s1 kernel: [37922.288267] [<c1273353>] ? apparmor_file_alloc_security+0x23/0x50 Apr 24 01:52:23 s1 kernel: [37922.288273] [<c1240814>] ? security_file_alloc+0x14/0x20 Apr 24 01:52:23 s1 kernel: [37922.288279] [<c1491d80>] ? udp_poll+0x70/0x70 Apr 24 01:52:23 s1 kernel: [37922.288285] [<c142cb4a>] sock_ioctl+0x8a/0x290 Apr 24 01:52:23 s1 kernel: [37922.288290] [<c142cac0>] ? move_addr_to_user+0xa0/0xa0 Apr 24 01:52:23 s1 kernel: [37922.288295] [<c11481c2>] do_vfs_ioctl+0x82/0x5b0 Apr 24 01:52:23 s1 kernel: [37922.288300] [<c14f4bfd>] ? _raw_spin_lock+0xd/0x10 Apr 24 01:52:23 s1 kernel: [37922.288305] [<c11366bc>] ? fd_install+0x4c/0x60 Apr 24 01:52:23 s1 kernel: [37922.288311] [<c142c4b4>] ? sock_map_fd+0x24/0x30 Apr 24 01:52:23 s1 kernel: [37922.288316] [<c142d9fd>] ? sys_socket+0x4d/0x80 Apr 24 01:52:23 s1 kernel: [37922.288321] [<c142ec48>] ? sys_socketcall+0x78/0x2e0 Apr 24 01:52:23 s1 kernel: [37922.288325] [<c114875f>] sys_ioctl+0x6f/0x80 Apr 24 01:52:23 s1 kernel: [37922.288331] [<c14fbb9f>] sysenter_do_call+0x12/0x28 Apr 24 01:53:38 s1 kernel: [37996.898288] usbcore: deregistering interface driver ath9k_htc Apr 24 01:56:23 s1 kernel: [38162.288487] modprobe D 35ffe000 0 1963 1813 0x00000000 Apr 24 01:56:23 s1 kernel: [38162.288493] e8073df0 00000086 35ffe000 35ffe000 e8019572 c170c020 c1809a00 c1809a00 Apr 24 01:56:23 s1 kernel: [38162.288504] 0a4623df 0000228f f7807a00 f6db8cb0 c170c020 00000002 00000000 00000001 Apr 24 01:56:23 s1 kernel: [38162.288514] f6db8cb0 c106b9e0 00100100 00200200 00000001 ed92f7fc c1841f80 e8073dd0 Apr 24 01:56:23 s1 kernel: [38162.288523] Call Trace: Apr 24 01:56:23 s1 kernel: [38162.288530] [<c106b9e0>] ? try_to_wake_up+0x230/0x230 Apr 24 01:56:23 s1 kernel: [38162.288535] [<c14f3fe7>] ? wait_for_completion+0x17/0x20 Apr 24 01:56:23 s1 kernel: [38162.288541] [<c1058c82>] ? wait_on_work+0x152/0x160 Apr 24 01:56:23 s1 kernel: [38162.288546] [<c14f4025>] schedule+0x35/0x50 Apr 24 01:56:23 s1 kernel: [38162.288550] [<c14f2fb6>] __mutex_lock_slowpath+0xc6/0x120 Apr 24 01:56:23 s1 kernel: [38162.288556] [<c12a0303>] ? blk_throtl_work+0x323/0x4b0 Apr 24 01:56:23 s1 kernel: [38162.288562] [<c14f2c64>] mutex_lock+0x24/0x40 Apr 24 01:56:23 s1 kernel: [38162.288566] [<c144ba72>] rtnl_lock+0x12/0x20 Apr 24 01:56:23 s1 kernel: [38162.288589] [<f8981114>] ieee80211_unregister_hw+0x44/0x110 [mac80211] Apr 24 01:56:23 s1 kernel: [38162.288598] [<f875ef0d>] ? ath9k_deinit_leds+0x3d/0x50 [ath9k_htc] Apr 24 01:56:23 s1 kernel: [38162.288606] [<f875eaca>] ath9k_htc_disconnect_device+0x3a/0x90 [ath9k_htc] Apr 24 01:56:23 s1 kernel: [38162.288613] [<f8756874>] ath9k_htc_hw_deinit+0x14/0x20 [ath9k_htc] Apr 24 01:56:23 s1 kernel: [38162.288619] [<f8756bcc>] ath9k_hif_usb_disconnect+0x3c/0x120 [ath9k_htc] Apr 24 01:56:23 s1 kernel: [38162.288625] [<c1351b94>] ? __pm_runtime_resume+0x54/0x80 Apr 24 01:56:23 s1 kernel: [38162.288632] [<c13cf1cc>] usb_unbind_interface+0x3c/0x140 Apr 24 01:56:23 s1 kernel: [38162.288638] [<c134851b>] __device_release_driver+0x5b/0xb0 Apr 24 01:56:23 s1 kernel: [38162.288643] [<c1348b3f>] driver_detach+0x8f/0xa0 Apr 24 01:56:23 s1 kernel: [38162.288648] [<c13483f3>] bus_remove_driver+0x63/0xa0 Apr 24 01:56:23 s1 kernel: [38162.288653] [<c13491b8>] driver_unregister+0x48/0x80 Apr 24 01:56:23 s1 kernel: [38162.288659] [<c13ce5f5>] usb_deregister+0xa5/0xb0 Apr 24 01:56:23 s1 kernel: [38162.288665] [<f8758482>] ath9k_hif_usb_exit+0x12/0x20 [ath9k_htc] Apr 24 01:56:23 s1 kernel: [38162.288672] [<f8764d49>] ath9k_htc_exit+0x9/0x2c0 [ath9k_htc] Apr 24 01:56:23 s1 kernel: [38162.288679] [<c1090c35>] sys_delete_module+0x135/0x230 Apr 24 01:56:23 s1 kernel: [38162.288684] [<c110f544>] ? remove_vma+0x44/0x60 Apr 24 01:56:23 s1 kernel: [38162.288688] [<c111050a>] ? do_munmap+0x16a/0x290 Apr 24 01:56:23 s1 kernel: [38162.288694] [<c14fbb9f>] sysenter_do_call+0x12/0x28 Is it bug? 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