These are both Thinkpad Carbon X1 nearly identical. I've changed the BIOS, done some grub twiddle etc.
cat /sys/power/mem_sleep
[s2idle] deep
This should be correct I think?
The thing is I have access to a nearly identical system that appears to be ok (no overnight drain to zero). Am wondering how to diff these two systems methodically? Or just a hail mary guess could also be useful here.
Potentially related:
- Xubuntu 12.10; battery drains when laptop lid is closed
- Battery drain during suspend mode, when lid is closed (~20% in 8 hours)
- Battery drains even while laptop lid closed (Ubuntu 19.04 & Thinkpad X1 Carbon 6th gen)
- Ubuntu not is hibernating when lid is closed
One additional weird thing is that on the drainy system, chrome seems to freeze for several seconds at a time.
I also see rmi4_f34 rmi4-00.fn34: rmi_f34v7_probe: Unrecognized bootloader version: 13 (
in dmesg on the drainy system.
I haven't fully properly diffed dmesg on the machines but I guess I could do that with some work.
I could I guess try booting to windows and doing another round of driver updates as well. Not sure ... I would expect to see power errors.
UPDATE:
I think the following resolved this:
- check BIOS sleep state. This was wrong on the misbehaving machine.
- edit grub as below (reboot)
sudo vi /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash mem_sleep_default=deep"
or deep should be s2idle. Not sure.
