Public bug reported: gma500, kernels 3.2.0, 3.5.0, and 3.6.0
Currently: bkw@noexcuse:~$ uname -a Linux noexcuse 3.6.0-030600-generic #201209302035 SMP Mon Oct 1 00:43:10 UTC 2012 i686 i686 i686 GNU/Linux bkw@noexcuse:~$ lsmod |grep gma gma500_gfx 198198 2 drm_kms_helper 45427 1 gma500_gfx drm 227730 3 gma500_gfx,drm_kms_helper i2c_algo_bit 13316 1 gma500_gfx video 18908 1 gma500_gfx bkw@noexcuse:~$ dpkg-query -W xserver-xorg xserver-xorg 1:7.7+1ubuntu3 xbacklight and enlightenment 17 backlight module don't do anything. xbacklight doesn't even output an error message or anything no matter what command line options are used. However, both of these two things DO work: echo 75 > /sys/class/backlight/psb-bl/brightness and xrandr --output LVDS-0 --set backlight 75 For me, there is also a /sys/class/backlight/acpi_video0/brightness which only takes values from 0-8 and which does not work. Also, for me, setting "acpi_backlight=vendor" on the grub command line results in there not being a /sys/class/backlight/psb-bl/ directory any more, instead in it's place there is /sys/class/backlight/sony or maybe it was sonypi , but it works the same as psb-bl. It didn't make xbacklight start working nor e17's backlight module. xrandr and sysfs (under the new name) both still worked the same. As a work-around I wrote and am using this in the meantime: http://code.google.com/p/bltool/ ** Affects: xbacklight (Ubuntu) Importance: Undecided Status: New ** Description changed: gma500, kernels 3.2.0, 3.5.0, and 3.6.0 Currently: bkw@noexcuse:~$ uname -a Linux noexcuse 3.6.0-030600-generic #201209302035 SMP Mon Oct 1 00:43:10 UTC 2012 i686 i686 i686 GNU/Linux bkw@noexcuse:~$ lsmod |grep gma - gma500_gfx 198198 2 + gma500_gfx 198198 2 drm_kms_helper 45427 1 gma500_gfx drm 227730 3 gma500_gfx,drm_kms_helper i2c_algo_bit 13316 1 gma500_gfx video 18908 1 gma500_gfx bkw@noexcuse:~$ dpkg-query -W xserver-xorg xserver-xorg 1:7.7+1ubuntu3 - bkw@noexcuse:~$ xbacklight and enlightenment 17 backlight module don't do anything. xbacklight doesn't even output an error message or anything no matter what command line options are used. However, both of these two things DO work: echo 75 > /sys/class/backlight/psb-bl/brightness and xrandr --output LVDS-0 --set backlight 75 For me, there is also a /sys/class/backlight/acpi_video0/brightness which only takes values from 0-8 and which does not work. Also, for me, setting "acpi_backlight=vendor" on the grub command line results in there not being a /sys/class/backlight/psb-bl/ directory any more, instead in it's place there is /sys/class/backlight/sony or maybe it was sonypi , but it works the same as psb-bl. It didn't make xbacklight start working nor e17's backlight module. xrandr and sysfs (under the new name) both still worked the same. As a work-around I wrote and am using this in the meantime: http://code.google.com/p/bltool/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1060431 Title: xbacklight doesn't do anything, not even error message. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xbacklight/+bug/1060431/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
