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Message #27503
[Bug 1049383] Re: ath9k_usb: TL-WN821N v3 (AR7010+9287) Connection drops
Sorry, I Debian Live 7 it fails again after transferring 2GB.
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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)
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