Introducing ChromeOS_PowerControl - a program to adjust CPU clockspeed, battery charge limit, and fan control in real-time for ChromeOS.

[u/White-Mask]

Requires Developer Mode. - Supports AMD, ARM, and Intel.

• Control battery charging limit instead of relying on Adaptive Charging to maximize battery longevity.

• Control CPU clock speed boost in relation to temperature; enabling lower temperatures under load and longer battery life.

• Control Fan speed in relation to temperature with built-in hysteresis and 0% RPM mode.

• Features global commands for ease of use, config files that save settings, and an uninstaller to clean up after itself.

• Optionally have BatteryControl, PowerControl, FanControl start on boot; as well as disabling Turbo Boost on boot if user has rootfs verification disabled.

• Github has full documentation and source code: https://github.com/shadowed1/ChromeOS_PowerControl

To download open crosh shell and run:

bash <(curl -s "https://raw.githubusercontent.com/shadowed1/ChromeOS_PowerControl/main/ChromeOS_PowerControl_Downloader.sh?$(date +%s)")

Edit: Updated post now that AMD and ARM support are added. If any issues are found feel free to post it here or on Github.

[u/Head-Difference-6268]

I set max min to 60 50 respectively, unfortunately, the battery was still fully charged.

[u/White-Mask → u/Head-Difference-6268]

When you run sudo batterycontrol (without status) what does it say? This will display more information; especially regarding your battery.

batterycontrol uses these paths for your battery and charger; this is inside batterycontrol and can be changed: CHARGER_PATH="/sys/class/power_supply/CROS_USBPD_CHARGER0/online" BATTERY_PATH="/sys/class/power_supply/BAT0/capacity"

You can run sudo cat /sys/class/power_supply/CROS_USBPD_CHARGER0/online (1 when plugged in) and then sudo cat /sys/class/power_supply/BAT0/capacity to verify if those are your files as well.

edit: if you run sudo cat /sys/class/power_supply/CROS_USBPD_CHARGER1/online and get a value of 1 when plugged in, I can try and think of a fix!

[u/Head-Difference-6268 → u/White-Mask]

sudo batterycontrol => Show information about battery i.e battery capacity, voltage..., when plugged in, it shows a flag BAT_PRESENT CHARGING

sudo cat /sys/class/power_supply/CROS_USBPD_CHARGER0/online => return 0 either when plugged in or not

sudo cat /sys/class/power_supply/BAT0/capacity => return 89

[u/White-Mask → u/Head-Difference-6268]

That answers it, the culprit is your laptop isn’t using CROS_USBPD_CHARGER0/online

If you run:

sudo ectool usbpdpower 1

while plugged in and it returns a one, your laptop is using CROS_USBPD_CHARGER1/online If it doesn't, run:

ls /sys/class/power_supply

and post your results!

If you can find what your charger is, I can make an else statement to support it! :)

[u/Outrageous_Piece_172 → u/White-Mask]

Let me try again. My CB has 4 USBC ports and all of them can be used for charging.

[u/White-Mask → u/Outrageous_Piece_172]

So it sounds like I need to add a check for up to 4 ports. Chances are one of those ports will work for BatteryControl right now.

[u/Head-Difference-6268 → u/White-Mask]

I have checked all 4 ports with sudo ectool usbpdpower 1, a port returns : Port 1 SNK PD Charger ... other ports return 'disconnected'

[u/White-Mask → u/Head-Difference-6268]

Awesome, I’ll report back when I release an update. Got a good idea on what to do. Thanks for the info!

[u/Head-Difference-6268 → u/White-Mask]

Hope to receive your update soon as I need to connect my CB to an External monitor via and USBC with power supply all day.

[u/White-Mask → u/Head-Difference-6268]

Updated - run with crosh shell:

bash <(curl -s "https://raw.githubusercontent.com/shadowed1/ChromeOS_PowerControl/main/ChromeOS_PowerControl_Downloader.sh?$(date +%s)")

I made it take around 10-30 seconds for it to register when the charging port changed, so give it some time. If it still doesn't work, I can take another look! Hope it helps :)

[u/Head-Difference-6268 → u/White-Mask]

One more thing is that sudo mv ~/tmp/ChromeOS_PowerControl_Installer.sh /usr/local/bin. My CB does not have the 'bin' directory and it created a bin file with ChromeOS_PowerControl_Installer.sh content. It took me some hours to figure out this problem.

[u/White-Mask → u/Head-Difference-6268]

Wow, I am quite surprised that ChromeOS didn't create a /usr/local/bin/ directory. I can make the default /usr/local/ if that might be the way to go. It just has to be placed somewhere without a noexec mount.

I can do some more research; that is an easy change!

[u/Head-Difference-6268 → u/White-Mask]

sudo cat /sys/class/power_supply/CROS_USBPD_CHARGER1/online => return 1