How To: Fix Wireless Connection Drops on the Intel 4965 Chipset in Jaunty 9.04

There’s a problem with the iwlagn wireless driver that ships with Jaunty by default, and you’ll find that when wireless connectivity drops you’ll have errors like these in your dmesg log:

[126774.231915] iwlagn: Microcode SW error detected. Restarting 0x2000000.
[126774.252811] iwlagn: MAC is in deep sleep!

Now, you can reset the connection easily enough with sudo ifdown wlan0 && sudo ifup wlan0, but thankfully the fix is already in the updated version of the iwglan driver in backports, so just go:

A swift reboot later and wireless ain’t gonna drop out on you any time soon – hurrah!

2 thoughts on “How To: Fix Wireless Connection Drops on the Intel 4965 Chipset in Jaunty 9.04”

  1. No need to swift re-boot, this command will restart your networking for you.

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