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#1 2024-07-10 09:51:57
- Gurgur
- Member
- Registered: 2024-07-09
- Posts: 18
[SOLVED] Very slow charging on my new laptop
Hi,
I've just finished installing Archlinux and Budgie as my DE.
Since I now have a DE I am able to see the battery percentage directly, and it shows 14%. It seemed weird to me since the laptop is charging for now 3 hours (even if I'm using it, it should have charged better).
I've therefore installed upower, and here's the result I get after using upower -i /org/freedesktop/UPower/devices/battery_BAT1 :
native-path: BAT1
vendor: SAMSUNG Electronics
model: SR Real Battery
serial: 123456789
power supply: yes
updated: mer. 10 juil. 2024 11:49:43 (7 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: charging
warning-level: none
energy: 7,8694 Wh
energy-empty: 0 Wh
energy-full: 55,979 Wh
energy-full-design: 54,362 Wh
energy-rate: 0,5852 W
voltage: 14,9 V
charge-cycles: N/A
time to full: 3,4 days
percentage: 14%
capacity: 100%
technology: lithium-ion
icon-name: 'battery-caution-charging-symbolic'
History (rate):
1720604983 0,585 charging
1720604953 0,801 charging
1720604923 0,508 charging
1720604893 0,554 chargingWe can see here that energy-rate is pretty low, and it fluctuates between 0W and 1.5W (never went above 2W for sure).
However, I'm using the factory charging cable/block I was given when receiving my laptop (Samsung Galaxy Book 4) and it is supposed to be fast charging (up to 45W).
What can I do to improve/correct the charging rate?
Thanks in advance,
Gurvan
Last edited by Gurgur (2024-07-11 20:00:48)
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#2 2024-07-10 20:14:14
- Gurgur
- Member
- Registered: 2024-07-09
- Posts: 18
Re: [SOLVED] Very slow charging on my new laptop
Hi,
I have some new details to share. I've looked a bit into the issue and installed TLP, set it up. I also installed powertop and activated some "Tuneables" by switching them from Bad to Good.
The battery now charges faster (~4W), but that's still far from what I'm expecting (no way the system is supposed to use 41W?).
Here's the new upower output:
native-path: BAT1
vendor: SAMSUNG Electronics
model: SR Real Battery
serial: 123456789
power supply: yes
updated: Wed Jul 10 22:09:11 2024 (19 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: charging
warning-level: none
energy: 48.1096 Wh
energy-empty: 0 Wh
energy-full: 55.979 Wh
energy-full-design: 54.362 Wh
energy-rate: 3.8808 W
voltage: 16.701 V
charge-cycles: N/A
time to full: 2.0 hours
percentage: 85%
capacity: 100%
technology: lithium-ion
icon-name: 'battery-full-charging-symbolic'
History (rate):
1720642151 3.881 charging
1720642091 2.495 charging
1720642060 2.402 chargingI've also found out the same way that dimmering the screen to the maximum saves 2W (that seems like a lot, but I might be in the wrong).
Finally, in the "Device stats" of powertop, I get this (first page of results only, the others are all at 0.00%):
Usage Device name
39,1% CPU misc
39,1% CPU core
1,0% Display backlight
100,0% Radio device: btusb
100,0% PCI Device: Intel Corporation Raptor Lake PCH CNVi WiFi
100,0% Radio device: iwlwifi
100,0% USB device: xHCI Host Controller
100,0% USB device: 720p HD Camera (Kingcome)
100,0% PCI Device: Samsung Electronics Co Ltd NVMe SSD Controller PM9B1 (DRAM-less)
100,0% PCI Device: Intel Corporation Alder Lake-P PCH SPI Controller
100,0% PCI Device: Intel Corporation Raptor Lake-P/U 2p+8e cores Host Bridge/DRAM Controller
100,0% PCI Device: Intel Corporation Device a73d
100,0% PCI Device: Intel Corporation Raptor Lake-P [Iris Xe Graphics]
100,0% PCI Device: Intel Corporation Alder Lake PCH USB 3.2 xHCI Host Controller
100,0% PCI Device: Intel Corporation Raptor Lake Dynamic Platform and Thermal Framework Processor Participant
100,0% PCI Device: Intel Corporation Raptor Lake-P/U/H cAVS
51,3% PCI Device: Intel Corporation Device 51be
51,2% PCI Device: Realtek Semiconductor Co., Ltd. RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller
49,6% runtime-i2c_designware.0
49,1% PCI Device: Intel Corporation Alder Lake PCH Serial IO I2C Controller #0
0,3 pkts/s Network interface: wlo1 (iwlwifi)
0,0% runtime-ACPI0003:00
0,0% USB device: xHCI Host Controller
0,0% runtime-PNP0C0A:00
0,0% USB device: xHCI Host Controller
0,0% USB device: usb-device-8087-0026
0,0% USB device: xHCI Host Controller
0,0% USB device: USB2.0-CRW (Generic)
0,0 pkts/s Network interface: enp3s0 (r8169)
0,0% PCI Device: Intel Corporation GNA Scoring Accelerator module
0,0% PCI Device: Intel Corporation Raptor Lake-P Thunderbolt 4 USB Controller
0,0% PCI Device: Intel Corporation Raptor Lake LPC/eSPI Controller
0,0% PCI Device: Intel Corporation Alder Lake PCH HECI Controller
0,0% PCI Device: Intel Corporation Raptor Lake PCIe 4.0 Graphics PortI'm however unsure of what 100% exactly means here.
Will continue to investigate while hoping someone here can help,
Cheers
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#3 2024-07-10 21:06:40
- Gurgur
- Member
- Registered: 2024-07-09
- Posts: 18
Re: [SOLVED] Very slow charging on my new laptop
Here's the output on battery:
native-path: BAT1
vendor: SAMSUNG Electronics
model: SR Real Battery
serial: 123456789
power supply: yes
updated: mer. 10 juil. 2024 23:04:06 (22 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: discharging
warning-level: none
energy: 47,7246 Wh
energy-empty: 0 Wh
energy-full: 55,979 Wh
energy-full-design: 54,362 Wh
energy-rate: 4,7124 W
voltage: 16,499 V
charge-cycles: N/A
time to empty: 10,1 hours
percentage: 85%
capacity: 100%
technology: lithium-ion
icon-name: 'battery-full-symbolic'
History (rate):
1720645446 4,712 discharging
1720645416 4,035 discharging
1720645386 3,018 discharging
1720645356 4,189 dischargingHere's the output right after, on AC:
native-path: BAT1
vendor: SAMSUNG Electronics
model: SR Real Battery
serial: 123456789
power supply: yes
updated: mer. 10 juil. 2024 23:05:17 (23 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: charging
warning-level: none
energy: 47,6938 Wh
energy-empty: 0 Wh
energy-full: 55,979 Wh
energy-full-design: 54,362 Wh
energy-rate: 2,3408 W
voltage: 16,613 V
charge-cycles: N/A
time to full: 3,5 hours
percentage: 85%
capacity: 100%
technology: lithium-ion
icon-name: 'battery-full-charging-symbolic'
History (rate):
1720645517 2,341 charging
1720645487 2,094 charging
1720645476 0,000 discharging
1720645446 4,712 dischargingSo if I get this right, it's charging at around 6-7W? That's way less than the 45W the charger is supposedly capable of...
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#4 2024-07-11 06:22:13
- seth
- Member
- Registered: 2012-09-03
- Posts: 59,716
Re: [SOLVED] Very slow charging on my new laptop
Does it charge (much) faster when the OS isn't running?
Is there a parallel windows installation?
Are you using the proper USB port?
Are there any battery/charging related settings in the UEFI?
The devices deal out the charging rate among themselves - the OS isn't directly involved but may configure the device via acpi, but you'll need special driver support for that (and your particular device)
Do you have another charger (even if it's "only" 25W or so)?
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#5 2024-07-11 07:22:14
- Gurgur
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- Registered: 2024-07-09
- Posts: 18
Re: [SOLVED] Very slow charging on my new laptop
- didn't mesaure that yet
- There was a Windows Installation, but I completely wiped the disk when installing Archlinux (intended)
- didn't test that yet
- There are 2 settings : "Smart Battery Calibration" and "Smart Battery Power Off". The former is for calibration, as named, but since the computer is all new it's not needed (and it's not the problem anyways). The latter is for prolonged storage.
I did not install any driver for charging, I'm unsure where to find the correct one, if needed to install.
I do have my macbook charger on hand, which if I remember correctly is 60W, and which I know is working correctly since it charges my MacBook fast.
However, the charger I'm using right now is the factory one shipped with the computer, so I assume it should work correctly...
(As for the non-responded questions, I'm currently discharging the laptop by running powertop on battery, 1. to get enough measurements so that it shows power estimates 2. to be able to test charging, because it's already at 97% right now. I will send another message once tested.)
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#6 2024-07-11 12:42:57
- Gurgur
- Member
- Registered: 2024-07-09
- Posts: 18
Re: [SOLVED] Very slow charging on my new laptop
- When the OS isn't running: it seems to charge up to 6 times faster!
- There doesn't seem to be a difference between the 2 USB-C ports
- Using another charger didn't change much
Here are some results I got:
Before plugging
===============
Energy: 12,089Wh
Energy-rate: /
Factory cable, hinge port, charged 5 minutes
=========================
Energy charged: <0.1Wh
Energy-rate: 0.1-0.9W
Left: 9 days, 189h (non-sense)
Factory cable, middle port, charged 5 miutes
=============
Energy charged: <=0.1Wh
Energy rate: 0.5-1W
Left: 170h (non-sense)
Apple cable, hinge port, charged 2 minutes
==========
Same energy rate as above
OS shutdown, hinge port, Apple cable, 5 minutes
==========================
Energy-rate: unknown
Energy charged: 0.5-0.6WhThis all seems pretty slow to me and I'm unsure what to improve... (Also, I set up TLP as said before but I'm unsure if it's permanently set, I enabled the service though)
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#7 2024-07-11 14:17:25
- seth
- Member
- Registered: 2012-09-03
- Posts: 59,716
Re: [SOLVED] Very slow charging on my new laptop
When the OS isn't running: it seems to charge up to 6 times faster!
Assuming that's not biased by 2-5 test cycles, let's see what you can control:
tail /sys/class/power_supply/BAT0/* /sys/devices/platform/samsung/*Offline
#8 2024-07-11 14:28:40
- Gurgur
- Member
- Registered: 2024-07-09
- Posts: 18
Re: [SOLVED] Very slow charging on my new laptop
I must say I only did 1 test of 5 minutes for each test mentioned above, but I guess it already says something?
On my laptop, BAT0 doesn't exist, it's BAT1. And there's no .../platform/samsung, but I assumed it was the .../SAM0430:00 
Here's the output of
LC_ALL=C tail /sys/class/power_supply/BAT1/* /sys/devices/platform/SAM0430:00/* 2>&1:
==> /sys/class/power_supply/BAT1/alarm <==
10000
==> /sys/class/power_supply/BAT1/capacity <==
21
==> /sys/class/power_supply/BAT1/capacity_level <==
Normal
==> /sys/class/power_supply/BAT1/charge_full <==
3635000
==> /sys/class/power_supply/BAT1/charge_full_design <==
3530000
==> /sys/class/power_supply/BAT1/charge_now <==
782000
==> /sys/class/power_supply/BAT1/current_now <==
379000
==> /sys/class/power_supply/BAT1/cycle_count <==
1
==> /sys/class/power_supply/BAT1/device <==
tail: error reading '/sys/class/power_supply/BAT1/device': Is a directory
==> /sys/class/power_supply/BAT1/hwmon1 <==
tail: error reading '/sys/class/power_supply/BAT1/hwmon1': Is a directory
==> /sys/class/power_supply/BAT1/manufacturer <==
SAMSUNG Electronics
==> /sys/class/power_supply/BAT1/model_name <==
SR Real Battery
==> /sys/class/power_supply/BAT1/power <==
tail: error reading '/sys/class/power_supply/BAT1/power': Is a directory
==> /sys/class/power_supply/BAT1/present <==
1
==> /sys/class/power_supply/BAT1/serial_number <==
123456789
==> /sys/class/power_supply/BAT1/status <==
Discharging
==> /sys/class/power_supply/BAT1/subsystem <==
tail: error reading '/sys/class/power_supply/BAT1/subsystem': Is a directory
==> /sys/class/power_supply/BAT1/technology <==
Li-ion
==> /sys/class/power_supply/BAT1/type <==
Battery
==> /sys/class/power_supply/BAT1/uevent <==
POWER_SUPPLY_VOLTAGE_NOW=14868000
POWER_SUPPLY_CURRENT_NOW=379000
POWER_SUPPLY_CHARGE_FULL_DESIGN=3530000
POWER_SUPPLY_CHARGE_FULL=3635000
POWER_SUPPLY_CHARGE_NOW=782000
POWER_SUPPLY_CAPACITY=21
POWER_SUPPLY_CAPACITY_LEVEL=Normal
POWER_SUPPLY_MODEL_NAME=SR Real Battery
POWER_SUPPLY_MANUFACTURER=SAMSUNG Electronics
POWER_SUPPLY_SERIAL_NUMBER=123456789
==> /sys/class/power_supply/BAT1/voltage_min_design <==
15400000
==> /sys/class/power_supply/BAT1/voltage_now <==
14868000
==> /sys/devices/platform/SAM0430:00/driver_override <==
(null)
==> /sys/devices/platform/SAM0430:00/firmware_node <==
tail: error reading '/sys/devices/platform/SAM0430:00/firmware_node': Is a directory
==> /sys/devices/platform/SAM0430:00/modalias <==
acpi:SAM0430:
==> /sys/devices/platform/SAM0430:00/power <==
tail: error reading '/sys/devices/platform/SAM0430:00/power': Is a directory
==> /sys/devices/platform/SAM0430:00/subsystem <==
tail: error reading '/sys/devices/platform/SAM0430:00/subsystem': Is a directory
==> /sys/devices/platform/SAM0430:00/uevent <==
MODALIAS=acpi:SAM0430:
==> /sys/devices/platform/SAM0430:00/waiting_for_supplier <==
0EDIT: A lot of them are directories, I'm unsure if that is the output you expected or not 
Last edited by Gurgur (2024-07-11 14:29:48)
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#9 2024-07-11 14:31:45
- Gurgur
- Member
- Registered: 2024-07-09
- Posts: 18
Re: [SOLVED] Very slow charging on my new laptop
Here are the trees of these folders:
/sys/class/power_supply/BAT1
|-- alarm
|-- capacity
|-- capacity_level
|-- charge_full
|-- charge_full_design
|-- charge_now
|-- current_now
|-- cycle_count
|-- device -> ../../../PNP0C0A:00
|-- hwmon1
| |-- curr1_input
| |-- device -> ../../BAT1
| |-- in0_input
| |-- name
| |-- power
| | |-- autosuspend_delay_ms
| | |-- control
| | |-- runtime_active_time
| | |-- runtime_status
| | `-- runtime_suspended_time
| |-- subsystem -> ../../../../../../../../../../class/hwmon
| `-- uevent
|-- manufacturer
|-- model_name
|-- power
| |-- autosuspend_delay_ms
| |-- control
| |-- runtime_active_time
| |-- runtime_status
| `-- runtime_suspended_time
|-- present
|-- serial_number
|-- status
|-- subsystem -> ../../../../../../../../../class/power_supply
|-- technology
|-- type
|-- uevent
|-- voltage_min_design
`-- voltage_now
8 directories, 32 files/sys/devices/platform/SAM0430:00
|-- driver_override
|-- firmware_node -> ../../LNXSYSTM:00/LNXSYBUS:00/SAM0430:00
|-- modalias
|-- power
| |-- autosuspend_delay_ms
| |-- control
| |-- runtime_active_time
| |-- runtime_status
| `-- runtime_suspended_time
|-- subsystem -> ../../../bus/platform
|-- uevent
`-- waiting_for_supplier
4 directories, 9 filesOffline
#10 2024-07-11 14:41:03
- seth
- Member
- Registered: 2012-09-03
- Posts: 59,716
Re: [SOLVED] Very slow charging on my new laptop
https://wiki.archlinux.org/title/Laptop/Samsung - battery preotection isn't configurable for some older models, for the GB4 several things seem missing
uname -a # you're not running on the LTS kernel, are you?
lsmod | grep -i samsungOffline
#11 2024-07-11 15:03:09
- Gurgur
- Member
- Registered: 2024-07-09
- Posts: 18
Re: [SOLVED] Very slow charging on my new laptop
I indeed saw that several things seem to be missing for the GB4, unfortunately... (camera works though, out of the box. but I have no sound)
Linux quantum-machine 6.9.8-arch1-1 #1 SMP PREEMPT_DYNAMIC Fri, 05 Jul 2024 22:11:24 +0000 x86_64 GNU/LinuxThere's no output for the second command, here's the full lsmod output: http://0x0.st/XMy8.txt
Last edited by Gurgur (2024-07-11 18:50:13)
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#12 2024-07-11 18:52:50
- seth
- Member
- Registered: 2012-09-03
- Posts: 59,716
Re: [SOLVED] Very slow charging on my new laptop
Looks like nothing platform specific got loaded
modprobe samsung_laptop force=truebut I'd not hold my breath, the device is likely not supported (yet?)
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#13 2024-07-11 18:55:37
- Gurgur
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- Registered: 2024-07-09
- Posts: 18
Re: [SOLVED] Very slow charging on my new laptop
Looks like nothing exists?
modprobe: ERROR: could not insert 'samsung_laptop': No such deviceOr is there some package/driver that I need to install for it to work?
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#14 2024-07-11 19:08:58
- seth
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- Registered: 2012-09-03
- Posts: 59,716
Re: [SOLVED] Very slow charging on my new laptop
No - I'd have expected the force parameter to take care of that, but doesn't.
modprobe -f … fails as well?
(Though there's no point in that)
You'll have to wait or file a kernel bug to pick up the device (if there's general support for this)
Alternatively (juts because of the charging speed) you could try to lie to the acpi,
acpi_osi=! acpi_osi="Windows 2022"Offline
#15 2024-07-11 19:14:37
- Gurgur
- Member
- Registered: 2024-07-09
- Posts: 18
Re: [SOLVED] Very slow charging on my new laptop
modprobe -f … fails as well?
Yep, whether I use --force, -f or nothing, it fails (No such device)
force=true doesn't seem to be the syntax for modprobe by the way, but it might just be undocumented. help page says --force or -f
I'll look into kernel bug, but I'm very unaware of where and how to file one, could you give me a direction to look into?
As for the acpi_osi thing, would that be in the GRUB config?
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#16 2024-07-11 19:27:02
- seth
- Member
- Registered: 2012-09-03
- Posts: 59,716
Re: [SOLVED] Very slow charging on my new laptop
force=true is a parameter for the module, "modinfo samsung_laptop"
Yes, grub (you can use the interactive bootloader editor, press "e" to edit the boot entry) - for the kernel bugzilla see eg. https://bugzilla.kernel.org/show_bug.cgi?id=217143 (it's not the same bug, just teh general direction)
btw, https://bugzilla.kernel.org/show_bug.cgi?id=95021 …
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#17 2024-07-11 19:31:07
- Gurgur
- Member
- Registered: 2024-07-09
- Posts: 18
Re: [SOLVED] Very slow charging on my new laptop
Oh I see, what was the force for then, well it doesn't work anyways.
I changed the acpi in grub and used grub-mkconfig to redo the config, I'm unsure what should I look for, but battery charging doesn't seem to improve.
Will take a look into kernel bug
Update: Wow, looks like a lot of work and knowledge to file a kernel bug 
Update 2: LYING WORKS! I'm charging at 31W right now!! Still using the factory cable and middle port (hinge port works too)
Last edited by Gurgur (2024-07-11 19:36:15)
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#18 2024-07-11 19:57:39
- seth
- Member
- Registered: 2012-09-03
- Posts: 59,716
Re: [SOLVED] Very slow charging on my new laptop
Update 2: LYING WORKS! I'm charging at 31W right now!! Still using the factory cable and middle port (hinge port works too)
If this pans out to be reliable you could add it to the samsung wiki page for the device.
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#19 2024-07-11 20:00:27
- Gurgur
- Member
- Registered: 2024-07-09
- Posts: 18
Re: [SOLVED] Very slow charging on my new laptop
Will do, I already added details for GB4 (there was only GB4Ultra).
I also documented my whole setup and will definitely remember how to get my laptop to charge.
Thanks for the help! Marking this as solved.
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#20 2024-08-04 02:45:11
- jusqua
- Member
- Registered: 2024-08-04
- Posts: 12
Re: [SOLVED] Very slow charging on my new laptop
Update 2: LYING WORKS! I'm charging at 31W right now!! Still using the factory cable and middle port (hinge port works too)
Hi, I also have a Samsung Galaxy Book4 with the same problems, I tried the kernel parameters given in the discussion (acpi_osi=! acpi_osi="Windows 2022").
Was adding kernel parameters sufficient to charge when linux is already running?
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#21 2024-08-04 06:11:25
- yataro
- Member
- Registered: 2024-03-09
- Posts: 76
Re: [SOLVED] Very slow charging on my new laptop
@jusqua what do you mean by "Was adding kernel parameters sufficient to charge when linux is already running?" as far as I know acpi_osi has meaning only at the boot stage, so you need to apply this on boot. You can check cmdline like this: cat /proc/cmdline.
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#22 2024-08-04 14:31:21
- jusqua
- Member
- Registered: 2024-08-04
- Posts: 12
Re: [SOLVED] Very slow charging on my new laptop
@jusqua what do you mean by "Was adding kernel parameters sufficient to charge when linux is already running?" as far as I know acpi_osi has meaning only at the boot stage, so you need to apply this on boot. You can check cmdline like this: cat /proc/cmdline.
Sorry, bad english.
I mean, adding kernel parameters acpi_osi=! acpi_osi="Windows 2022" at boot stage (in my case, via grub) is enough to workaround the slow charging issue?
For me, even with those commands, the laptop still charges slowly. The computer charges fast only when I shut down, plug the charger and boot it up again.
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#23 2024-08-04 15:26:29
- seth
- Member
- Registered: 2012-09-03
- Posts: 59,716
Re: [SOLVED] Very slow charging on my new laptop
cat /proc/cmdline
W/o rebooting, you cannot apply that - editing /etc/default/grub does absolutely nothing in any by itself
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#24 2024-08-10 19:31:20
- jusqua
- Member
- Registered: 2024-08-04
- Posts: 12
Re: [SOLVED] Very slow charging on my new laptop
I've had a rough week, sorry for the late repost. Here, the outputs of the same commands that the OP used.
$ cat /proc/cmdline
BOOT_IMAGE=(hd0,gpt5)/vmlinuz-6.10.3-200.fc40.x86_64 root=UUID=89245236-a9d4-4c59-b187-c91988c3cc54 ro rootflags=subvol=root rhgb quiet acpi_osi=! "acpi_osi=Windows 2022"UPower at AC charging:
$ upower -i /org/freedesktop/UPower/devices/battery_BAT1
native-path: BAT1
vendor: SAMSUNG Electronics
model: SR Real Battery
serial: 123456789
power supply: yes
updated: Sat 10 Aug 2024 04:23:16 PM -03 (6 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: charging
warning-level: none
energy: 40.3018 Wh
energy-empty: 0 Wh
energy-full: 55.902 Wh
energy-full-design: 54.362 Wh
energy-rate: 3.311 W
voltage: 16.128 V
charge-cycles: 47
time to full: 4.7 hours
percentage: 72%
capacity: 100%
technology: lithium-ion
icon-name: 'battery-full-charging-symbolic'
History (rate):
1723317796 3.311 charging
1723317766 3.557 charging
1723317736 1.355 charging
1723317706 1.170 chargingOffline
#25 2024-08-10 19:54:22
- seth
- Member
- Registered: 2012-09-03
- Posts: 59,716
Re: [SOLVED] Very slow charging on my new laptop
acpi_osi=! "acpi_osi=Windows 2022"is wrong
acpi_osi=! acpi_osi="Windows 2022"Offline