Found these two pages discussing what appears to be the same problem:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492
http://ubuntuforums.org/showthread.php?t=1470820
in at least one case, it is definitely the same problem ("deep sleep"
message shows up in the posted log). Note: while there were Lenovo
computers, there were a number of other brands also having problems.
Wireless card in the discussion was the Intel 5100 AGN.
I created a file "/etc/modprobe.d/iwlagn.conf" and placed the following
line in it:
options iwlagn 11n_disable=1 11n_disable50=1
and reloaded my driver. Wireless has been rock solid for 14 hours, no
dropped packets, no long pauses, no mysterious disconnects. Normally I
would at least see short pauses, a few disconnects and 100's of dropped
packets in this time frame.
Since I haven't been seeing the "deep sleep" problem lately, someone else
will have to disable "N" on their system to test if this prevents that
issue.
This doesn't really constitute a fix and it isn't a great work-around
either given the major lost of network performance, but if it works for
others, it would significantly narrow the range of possible causes for
the problem.
Shannon C. Dealy | DeaTech Research Inc.
de...@deatech.com | - Custom Software Development -
Phone: (800) 467-5820 | - Natural Building Instruction -
or: (541) 929-4089 | www.deatech.com
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