https://bugzilla.novell.com/show_bug.cgi?id=656638
https://bugzilla.novell.com/show_bug.cgi?id=656638#c6
Geoff Farrell changed:
What |Removed |Added
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CC| |gfarrell@netspeed.com.au
--- Comment #6 from Geoff Farrell 2011-01-03 05:14:26 UTC ---
Screen brightness controls are not working with a Samsung NF310-A01AU on 11.4
M5, in KDE. These are the xev outputs for Brightness Up (Fn-Up Arrow) and
Brightness Down (Fn-Down Arrow) events:
KeymapNotify event, serial 34, synthetic NO, window 0x0,
keys: 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0
KeyRelease event, serial 34, synthetic NO, window 0x5200001,
root 0xab, subw 0x0, time 2855941, (804,211), root:(807,234),
state 0x0, keycode 233 (keysym 0x1008ff02, XF86MonBrightnessUp),
same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
FocusOut event, serial 34, synthetic NO, window 0x5200001,
mode NotifyGrab, detail NotifyAncestor
FocusIn event, serial 34, synthetic NO, window 0x5200001,
mode NotifyUngrab, detail NotifyAncestor
KeymapNotify event, serial 34, synthetic NO, window 0x0,
keys: 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
KeyRelease event, serial 34, synthetic NO, window 0x5200001,
root 0xab, subw 0x0, time 2858201, (804,211), root:(807,234),
state 0x0, keycode 232 (keysym 0x1008ff03, XF86MonBrightnessDown),
same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
The graphical brightness indicator does not appear on the screen when the
brightness buttons are activated. In contrast, the Audio indicator does appear
when the Audio Up and Audio Down buttons are activated. For comparison
purposes, these are the xev outputs for the audio events:
KeymapNotify event, serial 34, synthetic NO, window 0x0,
keys: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
KeyRelease event, serial 34, synthetic NO, window 0x5400001,
root 0xab, subw 0x0, time 3871715, (-137,231), root:(1048,254),
state 0x0, keycode 123 (keysym 0x1008ff13, XF86AudioRaiseVolume),
same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
FocusOut event, serial 34, synthetic NO, window 0x5400001,
mode NotifyGrab, detail NotifyAncestor
FocusIn event, serial 34, synthetic NO, window 0x5400001,
mode NotifyUngrab, detail NotifyAncestor
KeymapNotify event, serial 34, synthetic NO, window 0x0,
keys: 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
KeyRelease event, serial 34, synthetic NO, window 0x5400001,
root 0xab, subw 0x0, time 3873983, (-137,231), root:(1048,254),
state 0x0, keycode 122 (keysym 0x1008ff11, XF86AudioLowerVolume),
same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
FocusOut event, serial 34, synthetic NO, window 0x5400001,
mode NotifyNormal, detail NotifyNonlinear
The only time the brightness indicator appears is after a powersave event:
either an event has occurred, or a mouse event triggers the system out of a
powersave profile. For example in Aggressive Powersave profile (Level set at
50% brightness, Dim Display after 2 mins, with screen off after 3 mins), afer 1
minute, the Brightness indicator appears, showing about 25%, then after another
30 seconds, the Brightness indicator appears, showing fully dimmed (0%). (These
times are half the set times, which is probably a separate bug). If the mouse
is then moved, the Brightness indicator appears, showing 50% level. Of note
though, is that the screen brightness does not actually change when these
indicator events occur; it stays at the same level throughout. When triggered
manually by explicitly activating these profiles through mouse, menu or power
button action, the screen brightness settings are again not followed.
The screen brightness also does not change when different powersave profiles
are selected. For example, with these settings:
Powersave 75%
Aggressive Powersave 50%
Performance ???
the screen brightness stays at the same level as when the machine first
started, regardless of which profile is activated. Note that the Performance
level can't be stated, as the slider is absent in the settings dialog (see
attached screenshot).
Output of cat /proc/acpi/wakeup:
# cat /proc/acpi/wakeup
Device S-state Status Sysfs node
EXP1 S4 *disabled pci:0000:00:1c.0
EXP2 S4 *disabled pci:0000:00:1c.1
EXP3 S4 *disabled pci:0000:00:1c.2
EXP4 S4 *disabled pci:0000:00:1c.3
PCIB S3 *disabled pci:0000:00:1e.0
PWRB S4 *enabled
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