From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Hung Subject: Re: [PATCH] ACPI / blacklist: blacklist Win8 OSI for HP Pavilion dv6 Date: Sat, 14 Mar 2015 20:46:25 +0800 Message-ID: References: <1425364754-31900-1-git-send-email-alex.hung@canonical.com> <1941299.sLe76u91Cr@vostro.rjw.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Received: from mail-qc0-f172.google.com ([209.85.216.172]:34521 "EHLO mail-qc0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753092AbbCNMqZ (ORCPT ); Sat, 14 Mar 2015 08:46:25 -0400 Received: by qcaz10 with SMTP id z10so9696669qca.1 for ; Sat, 14 Mar 2015 05:46:25 -0700 (PDT) In-Reply-To: <1941299.sLe76u91Cr@vostro.rjw.lan> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: "Rafael J. Wysocki" Cc: Len Brown , Linux ACPI Mailing List Rafael, Do you mean /sys/class/backlight/intel_backlight? It works but acpi_video fails. We have some cases that needs working acpi_video interfaces. I'd also like to backport to previous kernels that has not use native backlight by default Cheers, Alex Hung On Wed, Mar 11, 2015 at 6:20 AM, Rafael J. Wysocki wrote: > On Tuesday, March 03, 2015 02:39:14 PM Alex Hung wrote: >> The brightness hotkeys of HP Pavilion dv6 does not work with Win8 OSI. Due >> to insufficient documentation for the driver implementation, blacklist >> it as a workaround. > > I gather that the native backlight interface doesn't work on those systems too, > is that correct? > >> Signed-off-by: Alex Hung >> --- >> drivers/acpi/blacklist.c | 12 ++++++++++++ >> 1 file changed, 12 insertions(+) >> >> diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c >> index 9b693d5..98aa360 100644 >> --- a/drivers/acpi/blacklist.c >> +++ b/drivers/acpi/blacklist.c >> @@ -300,6 +300,18 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { >> }, >> >> /* >> + * The brightness hotkeys do not work on those machines when >> + * returning true for _OSI("Windows 2012") >> + */ >> + { >> + .callback = dmi_disable_osi_win8, >> + .ident = "HP Pavilion dv6", >> + .matches = { >> + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), >> + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv6 Notebook PC"), >> + }, >> + }, >> + /* >> * BIOS invocation of _OSI(Linux) is almost always a BIOS bug. >> * Linux ignores it, except for the machines enumerated below. >> */ >> > > -- > I speak only for myself. > Rafael J. Wysocki, Intel Open Source Technology Center. -- Cheers, Alex Hung