From: Alex Hung <alex.hung@canonical.com>
To: rjw@rjwysocki.net, lenb@kernel.org, linux-acpi@vger.kernel.org,
alex.hung@canonical.com
Cc: All applicable <stable@vger.kernel.org>
Subject: [PATCH] ACPI: video: use ACPI backlight for HP 635 Notebook
Date: Fri, 11 Sep 2020 16:14:20 -0600 [thread overview]
Message-ID: <20200911221420.21692-1-alex.hung@canonical.com> (raw)
Default backlight interface is AMD's radeon_bl0 which does not work on
this system. As a result, let's for ACPI backlight interface for this
system.
BugLink: https://bugs.launchpad.net/bugs/1894667
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Alex Hung <alex.hung@canonical.com>
---
drivers/acpi/video_detect.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 2499d7e..05047a3 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -282,6 +282,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"),
},
},
+ /* https://bugs.launchpad.net/bugs/1894667 */
+ {
+ .callback = video_detect_force_video,
+ .ident = "HP 635 Notebook",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP 635 Notebook PC"),
+ },
+ },
/* Non win8 machines which need native backlight nevertheless */
{
--
2.7.4
next reply other threads:[~2020-09-11 22:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-11 22:14 Alex Hung [this message]
2020-09-12 6:49 ` [PATCH] ACPI: video: use ACPI backlight for HP 635 Notebook Greg KH
2020-09-13 22:33 ` Alex Hung
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