Public bug reported:
I used the Alternate Text Based Ubuntu 32bit 7.10 setup CD ROM.
I applied all the latest updates to 21 March 2008.
I chose English as the language, the first question asked during setup. The
second question was:
Ubuntu suggested some English-language dominant countries; I picked Other then
selected Germany.
Ubuntu SHOULD have added 'options mac80211 ieee80211_regdom=64' to
/etc/modprobe.d/options to enable European ETSI Channel ranges 1-13.
It didn't. I could see with the top-right network icon (nm-applet 0.6.5)
all nearby radios, but not connect to, an Open AP on channel 13.
This is a BUG.
Extended Background:
With a built-in MiniPCI radio, a PrismGT Fullmac 54mb/s ISL3880/90 card, the
laptop (Sager/Clevo D500P) under Ubuntu could -see- all networks Ch1-13, but
could only -connect- to those using channels 1 through 11. In Europe, the
channel standards are officially 1,5,9,13; however, since as US so the rest of
the world (esp Western Europe), sometimes for bad... 1,6,11 are very commonly
used. Sometimes people have bought laptops -in Europe- from major manufacturers
(Toshiba) assembled with incorrect radios sku'd for channels 1-11; the Intel
2200BG for example, and -cannot operate- on Channel 12,13 unless the firmware
is modded (with linux :).
A open (public-access) AP WLAN operates near the laptop, on channel 13,
placing radio signals farther outside of typical interference and
traffic zones. In XP, (using the SMC 2802W drivers or others) I could
not see the Ch13 AP at all, although many more distant radios (on 1-11)
were visible. On Ubuntu 8.04 Hardy Heron, I could see Ch13 AP, however
nm-applet (the applet on the top-right for networking) always got stuck
attempting to connect (the spin of infinity / death) (21 March 2008).
I joined channel #prism54 on irc.freenode.net. Several pages of
conversation took place while users 'linmax' and 'roadi' helped out.
While I had 8.04 loaded and problems with the completely broken
wireless/wired nm-applet. 'linmax' then tested several of his own
fullmac radios on channels 13 and had no difficulties. I erased 8.04 and
loaded 7.10. 'linmax' suggested putting 'options mac80211
ieee80211_regdom=64' in /etc/modprobe.d/options. There was an additional
common step, i think to update the module cache. I restarted and the
radio then connected to Open AP on Ch13.
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: channel13 europe ieee80211 mac80211 regdom wifi wlan
--
Ubuntu does not put 'options mac80211 ieee80211_regdom=64' in
/etc/modprobe.d/options
https://bugs.launchpad.net/bugs/205095
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