additional infos: from terminal: echo 45 > /sys/class/backlight/nv_backlight/brightness echo 45 > /sys/devices/virtual/backlight/sony/subsystem/nv_backlight/brightness both change the brightness!
values range: /sys/devices/virtual/backlight/sony/subsystem/sony/brightness is [0-7] /sys/devices/virtual/backlight/sony/subsystem/nv_backlight/brightness is [0-100] i can do: echo 65 > /sys/devices/virtual/backlight/sony/subsystem/nv_backlight/brightness (BRIGHTNESS WORKS!!) echo 7 > /sys/devices/virtual/backlight/sony/subsystem/sony/brightness (OSD MOVES!!, BRIGHTNESS DOESN'T CHANGE!!!) pkexec /usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 3 pkexec /usr/lib/gnome-settings-daemon/gsd-backlight-helper --get-brightness i get: 3 so OSD CHANGES, BRIGHTNESS DOESN'T CHANGE!!! if I do: pkexec /usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness 9 Could not set the value of the backlight: writing '9' to /sys/devices/virtual/backlight/sony/brightness failed => beause /sony/brightness is [0-7] and 9 is too much (correct) org.gnome.SettingsDaemon.Power.Screen.SetPercentage 15 (OSD WORKS, BRIGHTNESS DOESN'T CHANGE!!!) while in a kde session: org/kde/Solid/PowerManagement.setBrightness 15 (ALL WORK FINE!!!!) hope this can be usefull! thanks you -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/940162 Title: regression in vaio cw backlight Status in “gnome-settings-daemon” package in Ubuntu: Confirmed Bug description: In my Sony Vaio Cw backlight brightness control worked fine in 11.10 and on 12.04 before some upgrade during the period 15-17 february. After that days, i cannot anymore change backlight. Note: In KDE i still can change it. now as workaround i use: echo 35 > /sys/class/backlight/nv_backlight/brightness lsb_release -rd Description: Ubuntu precise (development branch) Release: 12.04 cat /proc/version_signature Linux version 3.3.0-030300rc3-generic (root@gomeisa) (gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) ) #201202082335 SMP Thu Feb 9 04:36:53 UTC 2012 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/940162/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
