On 5/11/20 4:21 PM, Pete Wright wrote:
On 5/11/20 3:28 PM, Yuri Pankov wrote:
Pete Wright wrote:
hello,
i have a lenovo thinkpad P43s that exhibits lockups under CURRENT
but behaves fine when running STABLE. i've tried to find a fully
reproducible situation to get this system to lockup but haven't
found anything yet. i am starting to suspect that the changes
implemented in this review may be the issue though:
https://reviews.freebsd.org/D23728
my reasoning is that i've observed issues when:
- removing AC power from the laptop, or inserting AC power
- when the system display has gone to sleep
- randomly hanging during boot with this as last line:
battery0: battery enitialization start
unfortunately while the above seem to be cases where this has
happened i haven't been able to %100 reproduce yet.
so my first question is - would it be possible to just revert the
changes in that diff, or has too much time gone past to just back
out that single change. alternatively, is there any debugging
information i can get on my end that might help figure out what the
root cause is?
Not really what you are asking, but it's possible to disable ACPI
subdevices, so you could check if disabling cmbat completely helps
and it's indeed the suspect:
debug.acpi.disabled="cmbat"
Thanks Yuri,
So I was able to boot my system once via batter with this set, but
unfortunately it crashed after I tried to suspend/resume. Realizing
that was a bit optimistic I attempted to reboot the system and wasn't
able to get it to fully boot after several attempts.
I believe what the next step at this point is checkout the code right
before this commit and see if I can get it to successfully boot. I'll
report back if I find anything after that test.
To follow-up on this I believe the updates in the above review may be
the culprit. What I have done is built a memstick.img set to the commit
right before the changes in D23728 were merged. running this image I
can boot my system, disconnect and reconnect AC power without any issues.
i then booted from a memstick using the latest snapshot of current. i
can disconnect AC power without issues, but reconnecting hangs the
system immediately.
i've tested this a couple times and it seems pretty reproducible, not
sure what the best next step would be though. would someone here be
willing to help me debug this, or would it be best to file a PR along
with a dmesg and output from acpiconf?
cheers!
-pete
--
Pete Wright
p...@nomadlogic.org
@nomadlogicLA
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