*** This bug is a duplicate of bug 971809 ***
https://bugs.launchpad.net/bugs/971809
If wicd is also affect then I would indeed strongly suspect that ath9k
is the culprit.
** Summary changed:
- WLAN connection unstable
+ Wi-Fi connection unstable under both NM and wicd -- ath9k
** Changed in: network-manager (Ubuntu)
Status: Confirmed => New
** This bug has been marked a duplicate of bug 971809
Wifi connection unstable (Asus UX31 -- Atheros Wi-Fi)
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https://bugs.launchpad.net/bugs/943910
Title:
Wi-Fi connection unstable under both NM and wicd -- ath9k
Status in “network-manager” package in Ubuntu:
New
Bug description:
Laptop is a PackardBell EasyNote TK85. I don't know if it is a bug in
NetworkManager or ath9k, but I suppose it's ath9k, I also tried with
wicd, same problem. Problem exists since 11.04, I tried a lot to fix
it. Tested on Ubuntu and Kubuntu.
UPDATE
Problem still persists in precise.
/UPDATE
PROBLEM:
From time to time the network becomes very slow, often it is like
dead. After a few minutes it gets better again. If I restart
networking sometimes it helps, sometimes not.
Solutions I tried:
- ath9k.conf in modprobe.d with nohwcrypt=1
- networkboot on top in BIOS (according to the internet sometimes it could
help)
- compat-wireless via backport
- power management off
- blacklist acer_wmi, because it activates a second wlan-device
- deactivate BT to exclude interference
After all this trouble I decided to file a bug.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: network-manager 0.9.1.90-0ubuntu5.1
ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17
Uname: Linux 3.0.0-16-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
Date: Thu Mar 1 11:25:53 2012
IfupdownConfig:
auto lo
iface lo inet loopback
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
IpRoute:
default via 192.168.0.1 dev wlan0 proto static
169.254.0.0/16 dev wlan0 scope link metric 1000
192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.176
metric 2
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
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