Lenovo IdeaPad 5 Pro 14ACN6

About issue

By default the laptop comes configured for "Modern Standby", a Windows feature that is similar to modern smartphones deep sleep (allowing the devices to remain connected to the network and pull for information like new emails etc).

This does not work properly on Linux and will manifest as the device immediately exiting stand-by after you try to suspend it. You can also see it based on the power LED on the right hand side, it will be on instead of blinking.

Solution: Enabling S3 sleep on advanced BIOS

• Turn off OneKeyBattery mode in BIOS setup, if it is enabled, and save the BIOS settings, and power down the device.
• Follow the instructions to enter the hidden/advanced BIOS

You will find the Modern Standby feature in the AMD PBS menu, about 3/4 of the way down. Change this setting to S3 Enabled, save and exit.

Kernel method

Turn on:

# echo 1 > /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode

Turn off:

# echo 0 > /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode

ACPI method

First install acpi_call (or acpi_call-lts for LTS kernel, acpi_call-dkms for other kernels) and load the kernel module:

# modprobe acpi_call

Turn on:

# echo '\_SB.PCI0.LPC0.EC0.VPC0.SBMC 0x03' > /proc/acpi/call

To verify your setting run the command below, you should get 1:

$ cat /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode

Turn off:

# echo '\_SB.PCI0.LPC0.EC0.VPC0.SBMC 0x05' > /proc/acpi/call

To verify your setting run the command below, you should get 0:

$ cat /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode

Kernel method

To list available options run the command below:

$ cat /sys/firmware/acpi/platform_profile_choices

low-power balanced performance

Set it to Intelligent Cooling mode:

# echo 'balanced' > /sys/firmware/acpi/platform_profile

Set it to Extreme Performance mode:

# echo 'performance' > /sys/firmware/acpi/platform_profile

Set it to Battery Saving mode:

# echo 'low-power' > /sys/firmware/acpi/platform_profile

ACPI method

First install acpi_call (or acpi_call-lts for LTS kernel, acpi_call-dkms for other kernels) and load the kernel module:

# modprobe acpi_call

Set it to Intelligent Cooling mode:

# echo '\_SB.PCI0.LPC0.EC0.VPC0.DYTC 0x000FB001' > /proc/acpi/call

Set it to Extreme Performance mode:

# echo '\_SB.PCI0.LPC0.EC0.VPC0.DYTC 0x0012B001' > /proc/acpi/call

Set it to Battery Saving mode:

# echo '\_SB.PCI0.LPC0.EC0.VPC0.DYTC 0x0013B001' > /proc/acpi/call

Hidden BIOS menus

A number of advanced BIOS menus are available that allow for significant tweaking of the device. Do not touch these setting unless you know what you are doing.

• Boot the laptop with F2 pressed to get into BIOS.
• Under Configuration menu, disable "HotKey Mode" and "OneKeyBattery".
• Switch language to Chinese.
• Save settings and power down the laptop.
• Type, with the laptop powered off: F1 1 Q A Z F2 2 W S X F3 3 E D C F4 4 R F V F5 5 T G B F6 6 Y H N.
• Get into BIOS as usual, you will get into the BIOS but with a few options more unlocked.

If you do not get a number of extra menus in the sidebar, you either mistyped the combination or did it too slowly. Power off the device and try again.