[Sugar-devel] [TRANSIENT] Peer XOs NOT shown in Neighborhood view when Power Management is enabled

[James Cameron]

On Tue, Dec 18, 2012 at 11:10:25PM +0530, nitika.mail wrote:
> Peer XOs are NOT shown in Neighborhood view when Power Management
> is enabled.

As has already been said, there are known causes of this.  There is
also another cause not mentioned; damage to a single antenna.

When no school server is used, the peer XOs are shown in Neighbourhood
View as a result of broadcast network packets.  These packets are
transmitted by the access point without negotiation, and this forces
the wireless card to skip choosing the best receiving antenna.

If the right antenna is damaged, or the coax cable is twisted, then
this can show up as conflicting symptoms: (a) good downloads and
browsing, but (b) peer XOs not shown.

To exclude this possible cause, test both antennas.  If both antennas
are working correctly, then this is not a cause of the problem.

http://wiki.laptop.org/go/Antenna_testing describes antenna test
tools.  You must reflash to Open Firmware Q4D25 first, given that
31016O2 contains only Q4D24.

Always test antennas of an unknown laptop before testing
collaboration.

-- 
James Cameron
http://quozl.linux.org.au/