From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Tissoires Subject: [PATCH 2/2] Revert "ACPI / button: Change default behavior to lid_init_state=open" Date: Wed, 10 May 2017 18:12:40 +0200 Message-ID: <20170510161240.13229-3-benjamin.tissoires@redhat.com> References: <20170510161240.13229-1-benjamin.tissoires@redhat.com> Return-path: Received: from mx1.redhat.com ([209.132.183.28]:60128 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752929AbdEJQM4 (ORCPT ); Wed, 10 May 2017 12:12:56 -0400 In-Reply-To: <20170510161240.13229-1-benjamin.tissoires@redhat.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: "Rafael J . Wysocki" , Lv Zheng Cc: Jiri Eischmann , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org This reverts commit 77e9a4aa9de10cc1418bf9a892366988802a8025. Even if the method implementation can be buggy on some platform, the "open" choice is worse. It breaks docking stations basically and there is no way to have a user-space hwdb to fix that. On the contrary, it's rather easy in user-space to have a hwdb with the problematic platforms. Then, libinput (1.7.0+) can fix the state of the LID switch for us: you need to set the udev property LIBINPUT_ATTR_LID_SWITCH_RELIABILITY to 'write_open'. When libinput detects internal keyboard events, it will overwrite the state of the switch to open, making it reliable again. Given that logind only checks the LID switch value after a timeout, we can assume the user will use the internal keyboard before this timeout expires. For example, such a hwdb entry is: libinput:name:*Lid Switch*:dmi:*svnMicrosoftCorporation:pnSurface3:* LIBINPUT_ATTR_LID_SWITCH_RELIABILITY=write_open Link: https://bugzilla.gnome.org/show_bug.cgi?id=782380 Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires --- drivers/acpi/button.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index 6d5a8c1..e19f530 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -113,7 +113,7 @@ struct acpi_button { static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier); static struct acpi_device *lid_device; -static u8 lid_init_state = ACPI_BUTTON_LID_INIT_OPEN; +static u8 lid_init_state = ACPI_BUTTON_LID_INIT_METHOD; static unsigned long lid_report_interval __read_mostly = 500; module_param(lid_report_interval, ulong, 0644); -- 2.9.3