This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1886920
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1886920
Title:
Battery drain during sleep. System suspended before kernel suspends
all tasks. Lenovo ThinkPad T460
Status in linux package in Ubuntu:
Incomplete
Bug description:
The same as
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1825636.
kaihengfeng closed that one "Because there's no response from the
original bug reporter." and asked to file a report for all devices
affected, so here I am, duplicating the report.
On Ubuntu MATE 18.04, as well as after the update to 20.04, the
battery drains about 2% per hour of sleep (if I just close the lid).
$ cat /sys/power/mem_sleep
s2idle [deep]
tlp was initially installed on my machine. However, this behaviour also
occurs if I
$ sudo apt purge tlp acpi-call-dkms && sudo reboot now
also, it occurs when booting from a freshly made MATE 20.04 live usb
stick, so TLP shouldn't be the culprit.
All the log files look in all relevant aspects similar to what was
reported in the old report. I'm happy to provide log files from my
machine, if any are necessary.
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