Wi-Fi intermittent and slow -- Atheros AR9287 ath9k
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Unassigned |
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"
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
ProcVersionSign
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.
[main]
NetworkingEnab
WirelessEnable
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-
Evjenveien 99b d99ae224-
Twin 2830871f-
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
wlan0 802-11-wireless connected /org/freedeskto
eth0 802-3-ethernet unavailable /org/freedeskto
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
running 0.9.6.0 connected enabled enabled enabled enabled enabled
Changed in linux (Ubuntu): | |
status: | Incomplete → Confirmed |
Changed in linux (Ubuntu): | |
status: | Confirmed → Triaged |
tags: | added: regression-release |
Changed in linux (Ubuntu): | |
status: | Incomplete → Fix Released |
information type: | Public → Public Security |
Most probably a driver issue