Ticket #9743 (closed defect: worksforme)
XO-1.5 unexpected reboot within OFW associated with autowack resume testing
| Reported by: | wad | Owned by: | wad |
|---|---|---|---|
| Priority: | high | Milestone: | 1.5-hardware-C |
| Component: | hardware | Version: | 1.5-B3 |
| Keywords: | Cc: | rsmith | |
| Action Needed: | reproduce | Verified: | no |
| Deployments affected: | Blocked By: | ||
| Blocking: |
Description
On an XO-1.5 B3 prototype (#17), running Q3A16 and os45, I had a reboot instead of a resume.
The laptop was modified with the XO1.5 WLAN SR ECO:
The laptop was set to autowack by adding:
50 autowack-delay
autowack-on
to the olpc.fth file.
It was associated with an access point.
From the terminal activity, I enabled EC wakeup events using:
sudo sh
echo EC > /proc/acpi/wakeup
I then started a script running:
for i in seq 1 100000; do echo $i; sleep 1; echo mem > /sys/power/state; done;
On the first resume, it did the +r+r+X+Forthmacs rumba.
I have seen this once before, on a laptop without the XO1.5 WLAN SR ECO. At that time, I attributed it to MPPT experiments ongoing with that motherboard. The symptoms, however, are identical and this motherboard has no modifications to enable MPPT.
