https://bugzilla.kernel.org/show_bug.cgi?id=216176 Bug ID: 216176 Summary: ideapad-laptop doesn't expose rapid charge Product: Drivers Version: 2.5 Kernel Version: 5.18.5 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Platform_x86 Assignee: drivers_platform_x86@xxxxxxxxxxxxxxxxxxxx Reporter: tinozzo123@xxxxxxxxxxxx Regression: No Lenovo IdeaPad laptops support a feature named "Rapid Charge", normally usable on Windows via Lenovo Vantage. However, this feature isn't exposed on idepad-laptop.c. According to the Arch Wiki, this feature is still usable via ACPI commands: To enable: # echo '\_SB.PCI0.LPC0.EC0.VPC0.SBMC 0x07' > /proc/acpi/call To disable: # echo '\_SB.PCI0.LPC0.EC0.VPC0.SBMC 0x08' > /proc/acpi/call To check, the wiki uses different commands for different laptops. Three of them are (on all of them, 0x0 stands for off and 0x1 stands for on): Lenovo IdeaPad 5 14are05 # echo '\_SB.PCI0.LPC0.EC0.FCGM' | tee /proc/acpi/call # cat /proc/acpi/call; printf '\n' Lenovo IdeaPad 5 15are05 # echo '\_SB.PCI0.LPC0.EC0.QCHO' > /proc/acpi/call # cat /proc/acpi/call; printf '\n' Lenovo IdeaPad Flex 5 14alc05 # echo '\_SB.PCI0.LPC0.EC0.QKCM' | tee /proc/acpi/call # cat /proc/acpi/call | cut -d '' -f1 Small note, on Lenovo Vantage enabling Rapid Charge disables Battery Conservation automatically, and enabling Battery Conservation disables Rapid Charge automatically. The ACPI commands don't have this limitation. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
