Ticket #5105 (closed defect: duplicate)

Opened 2 years ago

Last modified 2 years ago

Wireless disappears on resume.

Reported by: cjb Owned by: dwmw2
Priority: blocker Milestone: Update.1
Component: wireless Version:
Keywords: Cc: mbletsas, jcardona, jg, kimquirk, dilinger
Action Needed: Verified: no
Deployments affected: Blocked By:
Blocking:

Description

Sometimes the wireless device drops off the bus completely on resume. On this particular log, we do a successful reset via the EC after a failure to set configuration, but then the device disappears soon after that.

This is on an MP laptop, build 639, wireless firmware 20.p4. The very end of the attached dmesg is the relevant part. I can try to get a log with libertas_debug=0x6000.

(Perhaps this is #4470, not sure.)

Attachments

libertas-dropoff (119.8 kB) - added by cjb 2 years ago.

Change History

Changed 2 years ago by cjb

in reply to: ↑ description   Changed 2 years ago by mbletsas

Chris,

This sounds no different than #5024 which is caused by the driver issuing the sleep command to the firmware after it has received a BUSY status from it and without waiting for the BUSY status to clear.

A fix for the driver is already in the works. Right now (build 641) in most cases OHM will kill wireless.

M.

follow-up: ↓ 3   Changed 2 years ago by cjb

Great, I see. So this happens when OHM tries to set the wireless wakeup state back to unicast after a sleep.

in reply to: ↑ 2   Changed 2 years ago by mbletsas

Chris,

basically what effectively happens is that the host goes to sleep without setting up the 8388 for that event and when it wakes up they are out of sync.

M.

  Changed 2 years ago by dwmw2

  • status changed from new to closed
  • resolution set to duplicate

This is #5024

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