#12151 NORM Not Tri: losses and high latency caused by NetworkManager with 8787 wireless module

[Zarro Boogs per Child]

#12151: losses and high latency caused by NetworkManager with 8787 wireless module
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 Reporter:  shep             |                 Owner:  dsd          
     Type:  defect           |                Status:  new          
 Priority:  normal           |             Milestone:  Not Triaged  
Component:  network manager  |               Version:  not specified
 Keywords:                   |           Next_action:  never set    
 Verified:  0                |   Deployment_affected:               
Blockedby:                   |              Blocking:               
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 With "12.1.0 for XO-1.75, customized (build 22)" on an XO-4 B1 (software
 as it came from the factory, but sshd enabled), and an 8787 wireless card
 swapped in, I was noticing unusual latencies over ssh.   It was bad enough
 it distracted me into investigating it.

 Pinging the laptop showed 35% packet loss, and of those packets that were
 not lost many were delayed several seconds.

 I managed to make this problem go away by shutting off NetworkManager and
 configuring the wireless interface by hand.

 I will attach ping logs with (con) and without (sin) NetworkManager
 running.

 With all the 5GHz channels available on the 8787 card, maybe scans take
 much longer and NetworkManager (or perhaps its clients?) are asking for
 scans often enough for this to be a problem.

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Ticket URL: <http://dev.laptop.org/ticket/12151>
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