[Ideapad] conservation_mode deprecated

[bonswouar]

[x] I've read and accepted the Bug Reporting Howto
[x] I've provided all required tlp-stat outputs via Gist (see below)
https://gist.github.com/bonswouar/ba1728f38fdbdc7b07f2df6f3dc79582

Describe the bug

It's not per say a bug right now, just a deprecation warning I've noticed in the logs:

ideapad_acpi VPC2004:00: conservation_mode attribute has been deprecated, see charge_types.

Not sure where to find some documentation about those charges_types though

Expected behavior

Use a not deprecated charge_type?

To Reproduce

Steps to reproduce the unexpected behavior:

1. Use TLP on an Ideapad (with recent kernel I guess?)
2. Notice dmesg output

Additional context

$ uname -r
6.17.4-200.fc42.x86_64

[linrunner]

Thanks for your report. I'm already aware of this. There is no need to rush. The old sysfile will not suddenly disappear, probably never.

Please show the output of:

 tlp-stat -s
 grep . /sys/class/power_supply/BAT?/*  | grep -v uevent

[bonswouar]

probably never

I see, this is this kind of deprecation warning 😄

$ tlp-stat -s
--- TLP 1.7.0 --------------------------------------------

+++ System Info
System         = LENOVO IdeaPad Pro 5 14AHP9 83D3
BIOS           = NBCN27WW
EC Firmware    = 1.27
OS Release     = Fedora Linux 42 (Sway)
Kernel         = 6.17.4-200.fc42.x86_64 #1 SMP PREEMPT_DYNAMIC Sun Oct 19 18:47:49 UTC 2025 x86_64
/proc/cmdline  = BOOT_IMAGE=(hd2,gpt6)/vmlinuz-6.17.4-200.fc42.x86_64 root=UUID=4ddde2c2-290c-44b6-82dc-cd91293960ed ro rootflags=subvol=root rhgb quiet ttm.pages_limit=6400000 ttm.page_pool_size=6400000
Init system    = systemd 
Boot mode      = UEFI
Suspend mode   = [s2idle]
SELinux status = enabled (enforcing)

+++ TLP Status
State          = enabled
RDW state      = not installed
Last run       = 10:04:26, 1314 sec(s) ago
Mode           = AC
Power source   = AC

$ grep . /sys/class/power_supply/BAT?/*  | grep -v uevent
grep: /sys/class/power_supply/BAT0/device: Is a directory
/sys/class/power_supply/BAT0/alarm:8689000
/sys/class/power_supply/BAT0/capacity:77
/sys/class/power_supply/BAT0/capacity_level:Normal
/sys/class/power_supply/BAT0/charge_types:Standard [Long_Life]
/sys/class/power_supply/BAT0/cycle_count:22
grep: /sys/class/power_supply/BAT0/extensions: Is a directory
grep: /sys/class/power_supply/BAT0/hwmon2: Is a directory
/sys/class/power_supply/BAT0/energy_full:86890000
/sys/class/power_supply/BAT0/energy_full_design:84000000
/sys/class/power_supply/BAT0/energy_now:67250000
grep: /sys/class/power_supply/BAT0/power: Is a directory
/sys/class/power_supply/BAT0/manufacturer:ATL
/sys/class/power_supply/BAT0/model_name:L23N4PF1
grep: /sys/class/power_supply/BAT0/subsystem: Is a directory
/sys/class/power_supply/BAT0/power_now:0
/sys/class/power_supply/BAT0/present:1
/sys/class/power_supply/BAT0/serial_number:7090
/sys/class/power_supply/BAT0/status:Not charging
/sys/class/power_supply/BAT0/technology:Li-poly
/sys/class/power_supply/BAT0/type:Battery
/sys/class/power_supply/BAT0/voltage_min_design:15600000
/sys/class/power_supply/BAT0/voltage_now:16549000