@Sander, thank you for your feed back. will it to the trick only by setting txpower, without nohwcrypt?
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1049383 Title: ath9k_usb: TL-WN821N v3 (AR7010+9287) Connection drops Status in The Linux Kernel: Confirmed Status in “linux” package in Ubuntu: Incomplete Bug description: Hi. The connection with this device is fast and stable, but seems to drop after a certain amount of data has been transmitted. The easiest way to reproduce it is to download something large. I can always reproduce it by downloading a torrent. After about 300-400MB, it seems like the wireless dongle hangs and the connection doesn't work anymore. At this point, network commands such as iwconfig freeze, and it's also impossible to reboot or turn off the computer. However, if the wireless dongle is unplugged and plugged again, everything's back to normal. The module is set with nohwcrypt=1. If this option is not set, the connection drops much faster. Also, I've noticed that the latency is lower with nohwcrypt=1 (using speedtest.net, the latency without hardware encryption is consistently 3 times less). Description: Ubuntu 12.04.1 LTS Release: 12.04 linux-generic: Installed: 3.2.0.30.32 Candidate: 3.2.0.30.32 Version table: *** 3.2.0.30.32 0 500 http://es.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages 100 /var/lib/dpkg/status 3.2.0.29.31 0 500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages 3.2.0.23.25 0 500 http://es.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages *******Results of lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 005 Device 002: ID 046d:c00e Logitech, Inc. M-BJ58/M-BJ69 Optical Wheel Mouse Bus 002 Device 004: ID 0cf3:7015 Atheros Communications, Inc. TP-Link TL-WN821N v3 802.11n [Atheros AR7010+AR9287] ******* Results for modinfo ath9k_usb: filename: /lib/modules/3.2.0-30-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_htc.ko firmware: htc_9271.fw firmware: htc_7010.fw description: Atheros driver 802.11n HTC based wireless devices license: Dual BSD/GPL author: Atheros Communications srcversion: 9B885B82530A1FF8F15C062 alias: usb:v0CF3p20FFd*dc*dsc*dp*ic*isc*ip* alias: usb:v0411p017Fd*dc*dsc*dp*ic*isc*ip* alias: usb:v083ApA704d*dc*dsc*dp*ic*isc*ip* alias: usb:v0846p9018d*dc*dsc*dp*ic*isc*ip* alias: usb:v0CF3p7010d*dc*dsc*dp*ic*isc*ip* alias: usb:v1668p1200d*dc*dsc*dp*ic*isc*ip* alias: usb:v0CF3p7015d*dc*dsc*dp*ic*isc*ip* alias: usb:v057Cp8403d*dc*dsc*dp*ic*isc*ip* alias: usb:v0CF3pB003d*dc*dsc*dp*ic*isc*ip* alias: usb:v040Dp3801d*dc*dsc*dp*ic*isc*ip* alias: usb:v04CAp4605d*dc*dsc*dp*ic*isc*ip* alias: usb:v13D3p3350d*dc*dsc*dp*ic*isc*ip* alias: usb:v13D3p3349d*dc*dsc*dp*ic*isc*ip* alias: usb:v13D3p3348d*dc*dsc*dp*ic*isc*ip* alias: usb:v13D3p3346d*dc*dsc*dp*ic*isc*ip* alias: usb:v13D3p3328d*dc*dsc*dp*ic*isc*ip* alias: usb:v13D3p3327d*dc*dsc*dp*ic*isc*ip* alias: usb:v07D1p3A10d*dc*dsc*dp*ic*isc*ip* alias: usb:v0846p9030d*dc*dsc*dp*ic*isc*ip* alias: usb:v0CF3p1006d*dc*dsc*dp*ic*isc*ip* alias: usb:v0CF3p9271d*dc*dsc*dp*ic*isc*ip* depends: ath9k_hw,ath9k_common,mac80211,ath,cfg80211 intree: Y vermagic: 3.2.0-30-generic SMP mod_unload modversions parm: debug:Debugging mask (uint) parm: nohwcrypt:Disable hardware encryption (int) To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1049383/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
