BIOS fires notifications in a constant period with VPC bit 1 set when the power cord is unplugged.
This event is not known yet to have any effect, but it makes the call to sparse_keymap_report_event() and generates many KEY_UNKNOWNs. This causes the userspace (Gnome Power Manager in my case) unable to enter the idle mode. As the result there is no screensaver showing up, no dim backlight, etc. Signed-off-by: Keng-Yu Lin <[email protected]> --- drivers/platform/x86/ideapad-laptop.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index bfdda33..820f013 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -463,7 +463,8 @@ static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event) ideapad_sync_rfk_state(adevice); else if (vpc_bit == 4) read_ec_data(handle, 0x12, &vpc2); - else + else if (vpc_bit == 1) { + } else ideapad_input_report(priv, vpc_bit); } } -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
