Your message dated Sat, 15 May 2021 04:59:19 -0700 (PDT)
with message-id <[email protected]>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #853736,
regarding bugs.debian.org: Battery sometimes not detected (Macbook Air 2011 and
Macbook Pro 2012)
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
853736: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=853736
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: bugs.debian.org
Severity: important
On my MacBook Air, the battery is sometimes not detected at boot: running acpi
reports nothing, /sys/class/power_supply only contains ADP, etc. This happens
seemingly randomly, more often when the computer is started when connected to a
power supply, but not systematically.
I've tried quite a few solutions, including disabling/enabling the sbs and
battery kernel modules, to no avail.
On Reddit, another user reports similar symptoms appear on their MacBook Pro
2012, at least when one the following conditions is encountered:
- Boot with power cable plugged
- Unplug while the screen is locked
- Resume from sleep or hibernation
Conversation is here, but there isn't much more:
https://www.reddit.com/r/debian/comments/5pqb3b/stretch_on_a_macbook_air_2011_battery_sometimes/
I've tried to compare boot logs with and without battery detected, and I
noticed a strange difference of detected memory size (off by a few bytes, not a
missing RAM module or something). Yet I believe this may be unrelated:
- I believe the difference in detected memory size accounts for a different
bug which prevent resume from hibernation due to "image size mismatch". This
bug happens on Debian as well as ArchLinux (I haven't tested with 4.9, though,
but I don't expect miracles)
- Conversely, the battery detection bug never happened on ArchLinux (neither
for me nor for the other Reddit user), and I see no reason it should be related
to memory detection, although this may hint towards the EFI.
-- System Information:
Debian Release: 9.0
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 4.9.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
--- End Message ---
--- Begin Message ---
Hi
This bug was filed for a very old kernel or the bug is old itself
without resolution.
If you can reproduce it with
- the current version in unstable/testing
- the latest kernel from backports
please reopen the bug, see https://www.debian.org/Bugs/server-control
for details.
Regards,
Salvatore
--- End Message ---
