** Changed in: linux (Ubuntu)
Status: New = In Progress
** Changed in: linux (Ubuntu)
Assignee: (unassigned) = Andy Whitcroft (apw)
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Intel 4965 wireless can't see wifi channels 12 and 13
https://bugs.launchpad.net/bugs/275279
You received this bug notification because you are a
** Also affects: linux (Ubuntu Intrepid)
Importance: Undecided
Status: New
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Intel 4965 wireless can't see wifi channels 12 and 13
https://bugs.launchpad.net/bugs/275279
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
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This is a limitation of the regulatory handling in the kernel. For
intrepid the you will need to use the module option work around:
options cfg80211 ieee80211_regdom=country code
For Jaunty and later the new crda regulatory domain daemon in
combination to the passive scanning support should
I'd like to make a small point. If you are using linux-backports-modules
(lbm) because you need a newer wifi driver, the module that regulates
which channels you see is no longer cfg80211 but lbm_cw_cfg80211.
Thus, the line that needs to be added to /etc/modprobe.d/options is
options
This is a known bug for European and Japanese users:
http://www.ubuntu.com/getubuntu/releasenotes/810#Only%20US%20wireless%20channels%20enabled%20by%20default%20on%20Intel%203945
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Intel 4965 wireless can't see wifi channels 12 and 13
https://bugs.launchpad.net/bugs/275279
You received this bug
...and users in Australia and New Zealand.
These days, for global standards, European means pretty much everyone
outside North America. The US tends to do its own thing and everyone else
does the OTHER thing. In the case of frequencies, the US reserved many
frequencies for military use that are
Dave's comment above fixed my problem. I have an Acer 2483 TravelMate
laptop with an Atheros wireless chipset.
Before I added the options line above to /etc/modprobe.d/options (and
re-booted), my wifi only saw 11 channels. But now it sees 13.
st...@steve-laptop:~$ iwlist wlan0 channel
wlan0
I want to confirm this behaviour in the Intel WiFi Link 5300 present on
my Thinkpad T400. Dave Nice's advice worked great, and only putting off
and on again iwlagn was enough to detect my AP.
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Intel 4965 wireless can't see wifi channels 12 and 13
https://bugs.launchpad.net/bugs/275279
You
Aha - looking at bug 275279 and adding this line to my /etc/modprobe.d/options
options cfg80211 ieee80211_regdom=EU
iwlist wlan0 channel now reports seeing channels 12 and 13. Will
check it has worked when I get home.
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Intel 4965 wireless can't see wifi channels 12 and 13
