From: bugzilla-daemon@kernel.org
To: platform-driver-x86@vger.kernel.org
Subject: [Bug 216176] New: ideapad-laptop doesn't expose rapid charge
Date: Sun, 26 Jun 2022 15:56:42 +0000 [thread overview]
Message-ID: <bug-216176-215701@https.bugzilla.kernel.org/> (raw)
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@kernel-bugs.osdl.org
Reporter: tinozzo123@tutanota.com
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.
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next reply other threads:[~2022-06-26 15:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-26 15:56 bugzilla-daemon [this message]
2022-06-26 19:34 ` [Bug 216176] ideapad-laptop doesn't expose rapid charge bugzilla-daemon
2022-06-26 19:44 ` bugzilla-daemon
2022-06-27 13:49 ` bugzilla-daemon
2022-06-27 19:47 ` bugzilla-daemon
2022-06-29 19:49 ` bugzilla-daemon
2022-06-29 20:04 ` bugzilla-daemon
2022-06-29 21:10 ` bugzilla-daemon
2022-09-19 9:07 ` bugzilla-daemon
2023-07-20 21:16 ` bugzilla-daemon
2024-02-06 14:34 ` bugzilla-daemon
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