keymap: Ignore brightness keys on Dell Inspiron 1520 to avoid double events

On the Dell Inspiron 1520 both the atkbd and acpi-video input devices report
an event for pressing the brightness up / down key-combos, resulting in user
space seeing double events and increasing / decreasing the brightness 2 steps
for each keypress.

This hwdb snippet suppresses the atkbd events, making the Inspiron 1520 work
like most modern laptops which emit brightness up / down events through
acpi-video only.

Reported by Pavel Malyshev <p.malishev@gmail.com>

https://bugzilla.redhat.com/show_bug.cgi?id=1141525

diff --git a/hwdb/60-keyboard.hwdb b/hwdb/60-keyboard.hwdb
index 06caba9791ebb57b455090b6c62171c24e63d027..d2ca965c9025009ab0b912b1b74f14de86ee0855 100644 (file)
--- a/hwdb/60-keyboard.hwdb
+++ b/hwdb/60-keyboard.hwdb
@@ -230,6 +230,11 @@ keyboard:dmi:bvn*:bvr*:bd*:svnDell*:pnInspiron*1110:pvr*
 keyboard:dmi:bvn*:bvr*:bd*:svnDell*:pnInspiron*1210:pvr*
  KEYBOARD_KEY_84=wlan
 
 keyboard:dmi:bvn*:bvr*:bd*:svnDell*:pnInspiron*1210:pvr*
  KEYBOARD_KEY_84=wlan
 

+# Dell Inspiron 1520
+keyboard:dmi:bvn*:bvr*:bd*:svnDell*:pnInspiron*1520:pvr*
+ KEYBOARD_KEY_85=unknown  # Brightness Down, also emitted by acpi-video, ignore
+ KEYBOARD_KEY_86=unknown  # Brightness Up, also emitted by acpi-video, ignore
+

 # Latitude XT2
 keyboard:dmi:bvn*:bvr*:bd*:svnDell*:pnLatitude*XT2:pvr*
  KEYBOARD_KEY_9b=up                                     # tablet rocker up
 # Latitude XT2
 keyboard:dmi:bvn*:bvr*:bd*:svnDell*:pnLatitude*XT2:pvr*
  KEYBOARD_KEY_9b=up                                     # tablet rocker up