Ticket #4131 (closed defect: invalid)
[firmware] WLAN appears to die after some number of suspend/resumes
|Reported by:||wad||Owned by:||wad|
|Priority:||blocker||Milestone:||8.2.0 (was Update.2)|
|Action Needed:||never set||Verified:||no|
|Deployments affected:||Blocked By:|
When running the ping test for #1752, we see units which stop responding (resuming) to pings, but which respond fine if the unit is woken manually (e.g. with the power button). We have managed to stop the suspend/resume cycling on some machines without crashing the kernel (a difficult feat!), and the system thinks that it has a fully operational mesh interface: it still shows up on iwconfig and ifconfig. Attempts to ping a laptop in this state, or to ping another mesh node from it fail w. 100% packet loss.
This problem has been seen on at least four different machines, typically after running between 10,000 and 20,000 cycles of suspend/resume. All machines were running build 581, w. OFW q2c28.
This may be related to a similar problem reported in ticket #3738