Gateway M-6319 has similar problem. Brightness doesn't work by either function
keys nor brightness applet.
The function keys works following hacks on /etc/apci/video_brightnessup.sh and
/etc/acpi/video_brightnessdown.sh as described on following forum threads:
http://ubuntuforums.org/showthread.php?t=767374
http://ubuntuforums.org/showthread.php?t=673946
But applet still doesn't work. I think whatever is called by
acpi_fakekey 224 and 225 is not working correctly.
$ sudo dmidecode -s system-manufacturer
Gateway
$ sudo dmidecode -s system-version
3409361R
$ sudo dmidecode -s system-product-name
M-6319
xev output for function keys brightness up (key code 212) and down
(101):
KeyPress event, serial 30, synthetic NO, window 0x3400001,
root 0x59, subw 0x0, time 2511327, (731,745), root:(736,796),
state 0x0, keycode 212 (keysym 0x0, NoSymbol), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False
KeyRelease event, serial 30, synthetic NO, window 0x3400001,
root 0x59, subw 0x0, time 2511327, (731,745), root:(736,796),
state 0x0, keycode 212 (keysym 0x0, NoSymbol), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
KeyPress event, serial 30, synthetic NO, window 0x3400001,
root 0x59, subw 0x0, time 2513724, (731,745), root:(736,796),
state 0x0, keycode 101 (keysym 0x0, NoSymbol), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False
KeyRelease event, serial 30, synthetic NO, window 0x3400001,
root 0x59, subw 0x0, time 2513724, (731,745), root:(736,796),
state 0x0, keycode 101 (keysym 0x0, NoSymbol), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
--
[gutsy] lenovo 3000 C200 laptop brightness hotkeys no longer work
https://bugs.launchpad.net/bugs/150474
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