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https://bugs.launchpad.net/bugs/1046800
Title:
Wi-Fi intermittent and slow -- Atheros AR9287 ath9k
Status in linux package in Ubuntu:
Fix Released
Bug description:
Wireless transfer is extremely slow (and choppy, hangs, slows down,
speeds up, stops for some time).
Expectet transfer speed using ssh (one ubuntu.iso 700MB file) is 5-7MB/s
Actual transfer speed using ssh (one ubuntu.iso 700MB file) is 0-1MB/s
iwconfig:
IEEE 802.11bgn ESSID:"Twin"
Mode:Managed Frequency:2.437 GHz Access Point: 74:44:01:36:DE:44
Bit Rate=144.4 Mb/s Tx-Power=16 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-31 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:217 Invalid misc:804 Missed beacon:0
Additional info:
I've got Ubuntu 12.04 and 12.10 on this laptop. Wireless is working as
expected in 12.04.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: network-manager 0.9.6.0-0ubuntu5
ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
Uname: Linux 3.5.0-13-generic x86_64
ApportVersion: 2.5.1-0ubuntu4
Architecture: amd64
Date: Thu Sep 6 13:53:43 2012
IfupdownConfig:
auto lo
iface lo inet loopback
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120820)
IpRoute:
default via 192.168.1.1 dev wlan0 proto static
169.254.0.0/16 dev wlan0 scope link metric 1000
192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.61 metric
9
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
NAME UUID TYPE
TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY
DBUS-PATH
Wired connection 1 b8d8726d-a290-4718-9e08-d70dc2436c4f
802-3-ethernet 1346798450 Wed 05 Sep 2012 12:40:50 AM CEST yes
no /org/freedesktop/NetworkManager/Settings/2
Evjenveien 99b d99ae224-97f8-4563-a707-dddf57642914
802-11-wireless 1346523533 Sat 01 Sep 2012 08:18:53 PM CEST yes
no /org/freedesktop/NetworkManager/Settings/1
Twin 2830871f-6c1f-4e2d-8ceb-6e594029373b
802-11-wireless 1346932350 Thu 06 Sep 2012 01:52:30 PM CEST yes
no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
wlan0 802-11-wireless connected
/org/freedesktop/NetworkManager/Devices/1
eth0 802-3-ethernet unavailable
/org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE
WIFI WWAN-HARDWARE WWAN
running 0.9.6.0 connected enabled enabled
enabled enabled enabled
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