Ubuntu
linux-source-2.6.22 package

  1. Bug #173652
  2. Comment #0

Comment 0 for bug 173652

Revision history for this message
Michael Doube (michael-doube) wrote : unable to adjust screen brightness on sony vaio vgn-sz650n

Binary package hint: linux-source-2.6.22

Ubuntu Gutsy amd64, new install, updated.

Fn keys don't work for dimming the screen, and no other method works.
The sony_laptop module is loaded:
:~$ lsmod |grep -i sony
sony_laptop 36520 0

tail -f /var/log/acpid

Reduce screen brightness (sun -), Fn+F5

-------------------
[Mon Dec 3 12:54:31 2007] received event "sony/hotkey SPIC 00000001 00000010"
[Mon Dec 3 12:54:31 2007] notifying client 5304[107:116]
[Mon Dec 3 12:54:31 2007] notifying client 5616[0:0]
[Mon Dec 3 12:54:31 2007] notifying client 5616[0:0]
[Mon Dec 3 12:54:31 2007] executing action "/etc/acpi/sonybright.sh down"
[Mon Dec 3 12:54:31 2007] BEGIN HANDLER MESSAGES
cat: /sys/class/backlight/sony/actual_brightness: No such file or directory
/etc/acpi/sonybright.sh: line 5: [: : integer expression expected
/etc/acpi/sonybright.sh: line 12: /sys/class/backlight/sony/brightness: No such file or directory
[Mon Dec 3 12:54:31 2007] END HANDLER MESSAGES
[Mon Dec 3 12:54:31 2007] action exited with status 1
[Mon Dec 3 12:54:31 2007] completed event "sony/hotkey SPIC 00000001 00000010"
[Mon Dec 3 12:54:31 2007] received event "sony/hotkey SPIC 00000001 0000003b"
[Mon Dec 3 12:54:31 2007] notifying client 5304[107:116]
[Mon Dec 3 12:54:31 2007] notifying client 5616[0:0]
[Mon Dec 3 12:54:31 2007] notifying client 5616[0:0][Mon Dec 3 12:54:33 2007] received event "sony/hotkey SPIC 00000001 00000011"
------------------------------

Increase screen brightness (sun +), Fn+F6

------------------------------
[Mon Dec 3 12:54:33 2007] notifying client 5304[107:116]
[Mon Dec 3 12:54:33 2007] notifying client 5616[0:0]
[Mon Dec 3 12:54:33 2007] notifying client 5616[0:0]
[Mon Dec 3 12:54:33 2007] executing action "/etc/acpi/sonybright.sh up"
[Mon Dec 3 12:54:33 2007] BEGIN HANDLER MESSAGES
cat: /sys/class/backlight/sony/actual_brightness: No such file or directory
/etc/acpi/sonybright.sh: line 5: [: : integer expression expected
/etc/acpi/sonybright.sh: line 21: /sys/class/backlight/sony/brightness: No such file or directory
[Mon Dec 3 12:54:33 2007] END HANDLER MESSAGES
[Mon Dec 3 12:54:33 2007] action exited with status 1
[Mon Dec 3 12:54:33 2007] completed event "sony/hotkey SPIC 00000001 00000011"
[Mon Dec 3 12:54:33 2007] received event "sony/hotkey SPIC 00000001 0000003b"
[Mon Dec 3 12:54:33 2007] notifying client 5304[107:116]
[Mon Dec 3 12:54:33 2007] notifying client 5616[0:0]
[Mon Dec 3 12:54:33 2007] notifying client 5616[0:0]
[Mon Dec 3 12:54:33 2007] completed event "sony/hotkey SPIC 00000001 0000003b"
-------------------------------

uname -a
Linux samantha 2.6.22-14-generic #1 SMP Sun Oct 14 21:45:15 GMT 2007 x86_64 GNU/Linux