Public bug reported:
When connecting to a home network, the wireless connection is
established and does not drop, but package throughput works
intermittently. When it is working, it works perfectly: the throughput
is fast and reliable. It seems that traffic helps it. The issue is most
notable on http requests. Flood pinging the router (or connecting to it)
drops no packets during these breaks, but anything outside is
unreachable. At the same time other computers experience no problems.
These paucities in operation last from minutes to tens of minutes.
Reconnecting to the wireless or rmmod/modprobing the module does not
help.
The usual proposed remedies (passing 11n_disable=1 and/or swcrypto=1)
make no obvious difference.
The most curious observations is that, during these intermittent breaks,
/established/ traffic comes through. For example, an active gtalk
session will remain active and fully responsive while all other traffic
is interrupted.
The stock iwlwifi for 12.04 (3.2.0) does not work either. Using the most
recent firmware. The wireless adapter worked perfectly with the 2.6
kernel, and it still works with Mint 11. Other devices have no issue
with the AP.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-backports-modules-cw-3.4-3.2.0-30-generic 3.2.0-30.15
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic x86_64
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
Date: Fri Sep 28 07:54:58 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-backports-modules-3.2.0
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-backports-modules-3.2.0 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise running-unity
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https://bugs.launchpad.net/bugs/1058089
Title:
Intel 5100 AGN (iwlwifi) hangs frequently -- intermittent operation
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