Bug#647680: gnome-settings-daemon: should use and prefer apple_backlight

[Mourad De Clerck]

Package: gnome-settings-daemon
Version: 3.2.1-1
Severity: normal
Tags: upstream patch


Backlight on certain apple laptops (MacBookPro7,1 in my case) has been
broken for a while now for a couple of reasons:
- The old module mbp_nvidia_bl has been renamed to apple_bl in more
  recent kernels.
- The nouveau backlight support has never worked properly on my nVidia
  chipset (NVAF). See also:
  https://bugzilla.redhat.com/show_bug.cgi?id=625171
  https://bugs.freedesktop.org/show_bug.cgi?id=31920

For these reasons, I need to tell gnome-settings-daemon (previously
gnome-power-manager) to use apple_backlight instead of nv_backlight or
mbp_backlight.

The following one-line patch does the trick for me, it would be nice if
it could be applied in Debian or upstream.

Thanks,

-- Mourad DC

diff --git a/plugins/power/gsd-backlight-helper.c b/plugins/power/gsd-backlight-helper.c
index 5ea7943..3e8567d 100644
--- a/plugins/power/gsd-backlight-helper.c
+++ b/plugins/power/gsd-backlight-helper.c
@@ -48,6 +48,7 @@ gsd_backlight_helper_get_best_backlight ()
 
        /* available kernel interfaces in priority order */
        static const gchar *backlight_interfaces[] = {
+               "apple_backlight",
                "nv_backlight",
                "asus_laptop",
                "toshiba",


-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.0.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gnome-settings-daemon depends on:
ii  dconf-gsettings-backend [gsettings-backend]  0.7.5-3              
ii  dpkg                                         1.16.1.1             
ii  gsettings-desktop-schemas                    3.2.0-1              
ii  libatk1.0-0                                  2.2.0-2              
ii  libc6                                        2.13-21              
ii  libcairo-gobject2                            1.10.2-6.1           
ii  libcairo2                                    1.10.2-6.1           
ii  libcanberra-gtk3-0                           0.28-3               
ii  libcanberra0                                 0.28-3               
ii  libcolord1                                   0.1.13-1             
ii  libcomerr2                                   1.42~WIP-2011-10-16-1
ii  libcups2                                     1.5.0-10             
ii  libdbus-1-3                                  1.5.8-1              
ii  libdbus-glib-1-2                             0.98-1               
ii  libfontconfig1                               2.8.0-3              
ii  libfreetype6                                 2.4.7-2              
ii  libgconf2-4                                  2.32.4-1             
ii  libgcrypt11                                  1.5.0-3              
ii  libgdk-pixbuf2.0-0                           2.24.0-1             
ii  libglib2.0-0                                 2.30.1-2             
ii  libgnome-desktop-3-2                         3.2.1-2              
ii  libgnome2-common                             2.32.1-2             
ii  libgnomekbd7                                 3.2.0-1              
ii  libgnutls26                                  2.12.12-1            
ii  libgssapi-krb5-2                             1.9.1+dfsg-3         
ii  libgtk-3-0                                   3.2.1-1              
ii  libgudev-1.0-0                               172-1                
ii  libk5crypto3                                 1.9.1+dfsg-3         
ii  libkrb5-3                                    1.9.1+dfsg-3         
ii  liblcms2-2                                   2.2+git20110628-2    
ii  libnotify4                                   0.7.4-1              
ii  libpackagekit-glib2-14                       0.6.18-1+b1          
ii  libpango1.0-0                                1.29.4-2             
ii  libpolkit-gobject-1-0                        0.102-1              
ii  libpulse-mainloop-glib0                      1.1-1                
ii  libpulse0                                    1.1-1                
ii  libsqlite3-0                                 3.7.8-1              
ii  libupower-glib1                              0.9.14-1             
ii  libx11-6                                     2:1.4.4-2            
ii  libxfixes3                                   1:5.0-4              
ii  libxi6                                       2:1.4.3-3            
ii  libxklavier16                                5.1-2                
ii  nautilus-data                                3.0.2-4              
ii  zlib1g                                       1:1.2.5.dfsg-1       

Versions of packages gnome-settings-daemon recommends:
ii  hwdata      0.233-1
ii  pulseaudio  1.1-1  

Versions of packages gnome-settings-daemon suggests:
ii  gnome-screensaver            3.0.1-3   
ii  metacity [x-window-manager]  1:2.34.1-2
ii  mutter [x-window-manager]    3.2.1-1   
ii  x11-xserver-utils            7.6+3     

-- no debconf information