Public bug reported:
Running:
Description: Ubuntu 11.04
Release: 11.04
2.6.38-8-generic
When disconnecting the AC power form MSI Wind (U100) the network connection on
wlan0 is rapidly dropping.
pings from router to wlan0 interface on laptop when the AC power is plugged in:
PING 192.168.1.109 (192.168.1.109): 56 data bytes
64 bytes from 192.168.1.109: seq=0 ttl=64 time=5.881 ms
64 bytes from 192.168.1.109: seq=1 ttl=64 time=5.165 ms
64 bytes from 192.168.1.109: seq=2 ttl=64 time=2.097 ms
64 bytes from 192.168.1.109: seq=3 ttl=64 time=1.708 ms
64 bytes from 192.168.1.109: seq=4 ttl=64 time=1.717 ms
64 bytes from 192.168.1.109: seq=5 ttl=64 time=1.848 ms
64 bytes from 192.168.1.109: seq=6 ttl=64 time=1.795 ms
64 bytes from 192.168.1.109: seq=7 ttl=64 time=1.745 ms
64 bytes from 192.168.1.109: seq=8 ttl=64 time=2.078 ms
64 bytes from 192.168.1.109: seq=9 ttl=64 time=2.150 ms
64 bytes from 192.168.1.109: seq=10 ttl=64 time=2.053 ms
64 bytes from 192.168.1.109: seq=11 ttl=64 time=5.342 ms
64 bytes from 192.168.1.109: seq=13 ttl=64 time=1.589 ms
64 bytes from 192.168.1.109: seq=14 ttl=64 time=1.732 ms
64 bytes from 192.168.1.109: seq=15 ttl=64 time=1.974 ms
64 bytes from 192.168.1.109: seq=16 ttl=64 time=1.801 ms
64 bytes from 192.168.1.109: seq=17 ttl=64 time=2.401 ms
64 bytes from 192.168.1.109: seq=18 ttl=64 time=1.711 ms
64 bytes from 192.168.1.109: seq=19 ttl=64 time=1.710 ms
64 bytes from 192.168.1.109: seq=20 ttl=64 time=1.928 ms
64 bytes from 192.168.1.109: seq=21 ttl=64 time=2.036 ms
64 bytes from 192.168.1.109: seq=22 ttl=64 time=1.762 ms
64 bytes from 192.168.1.109: seq=23 ttl=64 time=1.933 ms
64 bytes from 192.168.1.109: seq=24 ttl=64 time=2.330 ms
64 bytes from 192.168.1.109: seq=26 ttl=64 time=2.016 ms
64 bytes from 192.168.1.109: seq=27 ttl=64 time=2.230 ms
64 bytes from 192.168.1.109: seq=28 ttl=64 time=1.594 ms
64 bytes from 192.168.1.109: seq=29 ttl=64 time=2.342 ms
64 bytes from 192.168.1.109: seq=30 ttl=64 time=1.681 ms
64 bytes from 192.168.1.109: seq=31 ttl=64 time=1.791 ms
64 bytes from 192.168.1.109: seq=32 ttl=64 time=3.188 ms
^C
--- 192.168.1.109 ping statistics ---
33 packets transmitted, 31 packets received, 6% packet loss
round-trip min/avg/max = 1.589/2.300/5.881 ms
Pings from router to wlan0 of laptop when AC power is disconnected:
PING 192.168.1.109 (192.168.1.109): 56 data bytes
64 bytes from 192.168.1.109: seq=2 ttl=64 time=75.573 ms
64 bytes from 192.168.1.109: seq=4 ttl=64 time=119.527 ms
64 bytes from 192.168.1.109: seq=6 ttl=64 time=1064.895 ms
64 bytes from 192.168.1.109: seq=7 ttl=64 time=64.502 ms
64 bytes from 192.168.1.109: seq=9 ttl=64 time=135.199 ms
64 bytes from 192.168.1.109: seq=11 ttl=64 time=78.182 ms
64 bytes from 192.168.1.109: seq=13 ttl=64 time=124.175 ms
64 bytes from 192.168.1.109: seq=15 ttl=64 time=70.201 ms
64 bytes from 192.168.1.109: seq=17 ttl=64 time=115.503 ms
64 bytes from 192.168.1.109: seq=19 ttl=64 time=157.417 ms
64 bytes from 192.168.1.109: seq=21 ttl=64 time=101.789 ms
64 bytes from 192.168.1.109: seq=23 ttl=64 time=148.583 ms
64 bytes from 192.168.1.109: seq=25 ttl=64 time=93.276 ms
64 bytes from 192.168.1.109: seq=27 ttl=64 time=140.335 ms
64 bytes from 192.168.1.109: seq=29 ttl=64 time=84.165 ms
64 bytes from 192.168.1.109: seq=31 ttl=64 time=131.039 ms
64 bytes from 192.168.1.109: seq=33 ttl=64 time=75.559 ms
64 bytes from 192.168.1.109: seq=35 ttl=64 time=127.801 ms
64 bytes from 192.168.1.109: seq=37 ttl=64 time=67.134 ms
64 bytes from 192.168.1.109: seq=41 ttl=64 time=57.773 ms
^C
--- 192.168.1.109 ping statistics ---
43 packets transmitted, 20 packets received, 53% packet loss
round-trip min/avg/max = 57.773/151.631/1064.895 ms
Not sure what is happening but when booting from kernel 2.6.35 looks
like the problem is not appearing.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: network-manager 0.8.4~git.20110319t175609.d14809b-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
CRDA: Error: [Errno 2] Nie ma takiego pliku ani katalogu
Date: Thu Jun 9 23:10:23 2011
Gconf:
IfupdownConfig:
auto lo
iface lo inet loopback
InstallationMedia: Ubuntu-Netbook 10.10 "Maverick Meerkat" - Release i386
(20101007)
IpRoute:
192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.109 metric
2
169.254.0.0/16 dev wlan0 scope link metric 1000
default via 192.168.1.1 dev wlan0 proto static
Keyfiles: Error: [Errno 2] Nie ma takiego pliku ani katalogu
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
ProcEnviron:
LANGUAGE=pl_PL:en
PATH=(custom, no user)
LANG=pl_PL.UTF-8
SHELL=/bin/bash
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: Upgraded to natty on 2011-05-10 (30 days ago)
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: apport-bug i386 natty
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https://bugs.launchpad.net/bugs/795273
Title:
wlan0 issues with connection on battery
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