@dave945:
There's something interesting in your logs. Both boot dmesg logs when
the wireless wasn't working properly had loaded the iwlwifi-5000-2.ucode
properly. When you installed the linux-backports-modules package it
started to look for lbm-iwlwifi-5000-2.ucode firmware file instead (note
the prefixed "lbm-"). It then fell back to lbm-iwlwifi-5000-1.ucode,
which it found. I am wondering if this is a firmware issue.
By default you should have both iwlwifi-5000-1.ucode and
iwlwifi-5000-2.ucode in /lib/firmware/. Assuming you do, try the
following test:
1. move /lib/firmware/iwlwifi-5000-2.ucode to
/lib/firmware/iwlwifi-5000-2.ucode.backup
2. restart
If it gets better, do the opposite. Move the ucode file back to where it
was and then restart to confirm that the wireless behaves poorly again.
Please post your results in this bug report.
Thanks
** Changed in: linux (Ubuntu)
Status: Triaged => Incomplete
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Intel iwlagn driver hangs from time to time
https://bugs.launchpad.net/bugs/518196
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