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xrandr: Use specified output property name for backlight control

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Backlight controls are set using the "BACKLIGHT" XRANDR output property.
This should be "Backlight" according to the XRANDR spec [1].

Some drivers (Intel) export both properties and some only the specified property (nvidia).
Users of drivers that only export the specified property cannot change their backlight using XRANDR.

[1] http://cgit.freedesktop.org/xorg/proto/randrproto/tree/randrproto.txt section 9.1

https://bugzilla.gnome.org/show_bug.cgi?id=723606
This commit is contained in:
Robert Ancell 2014-02-04 12:36:11 +00:00 committed by Adel Gadllah
parent 099059c930
commit c2dadecab8
2 changed files with 4 additions and 4 deletions
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6
src/core/monitor-xrandr.c
View File

@ -187,7 +187,7 @@ output_get_backlight_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
XRRGetOutputProperty (manager_xrandr->xdisplay,
(XID)output->output_id,
display->atom_BACKLIGHT,
display->atom_Backlight,
0, G_MAXLONG, False, False, XA_INTEGER,
&actual_type, &actual_format,
&nitems, &bytes_after, &buffer);
@ -212,7 +212,7 @@ output_get_backlight_limits_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
meta_error_trap_push (display);
info = XRRQueryOutputProperty (manager_xrandr->xdisplay,
(XID)output->output_id,
display->atom_BACKLIGHT);
display->atom_Backlight);
meta_error_trap_pop (display);
if (info == NULL)
@ -945,7 +945,7 @@ meta_monitor_manager_xrandr_change_backlight (MetaMonitorManager *manager,
meta_error_trap_push (display);
XRRChangeOutputProperty (manager_xrandr->xdisplay,
(XID)output->output_id,
display->atom_BACKLIGHT,
display->atom_Backlight,
XA_INTEGER, 32, PropModeReplace,
(unsigned char *) &hw_value, 1);
meta_error_trap_pop (display);

2
src/meta/atomnames.h
View File

@ -80,7 +80,7 @@ item(MULTIPLE)
item(TIMESTAMP)
item(VERSION)
item(ATOM_PAIR)
item(BACKLIGHT)
item(Backlight)
item(hotplug_mode_update)
/* Oddities: These are used, and we need atoms for them,