[Bug 1254376] Re: Brightness settings changes have no effect.
[Expired for Ubuntu because there has been no activity for 60 days.] ** Changed in: ubuntu Status: Incomplete = Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1254376 Title: Brightness settings changes have no effect. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1254376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1254376] Re: Brightness settings changes have no effect.
I confirm what Jankob said. With the same parameters on the grub command line, I have the same behavior on my 13.4 (kernel 3.8.0-34) : it works but no OSD notification. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1254376 Title: Brightness settings changes have no effect. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1254376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1254376] Re: Brightness settings changes have no effect.
I can control the backlight via FN-keys, however there is no OSD notification. I use Ubuntu 13.10, kernel 3.11.0-14 and as grub commandline quiet nosplash acpi_osi= acpi_backlight=vendor -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1254376 Title: Brightness settings changes have no effect. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1254376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1254376] Re: Brightness settings changes have no effect.
More information acpi_backlight=vendor Shortcut doesn't work at all (Fn+Left and Fn+Right). there is no OSD displayed anymore I can change the backlight from the system settings (doing so modifies the /sys/class/backlight/intel_backlight/brightness file) Writting from the console myself in /sys/class/backlight/intel_backlight/brightness changes the backlight level (8 dimm : the screen is almost off). video.use_bios_initial_backlight=0 : NO CHANGE compare to the initial report. I can control the backlight level from the console with the file /sys/class/backlight/intel_backlight/brightness file (8 dimm : the screen is almost off) but the software modifies the brigtness in the acpi folder instead. atkbd.softraw=0 : NO CHANGE compare to the initial report. I can control the backlight level from the console with the file /sys/class/backlight/intel_backlight/brightness file (8 dimm : the screen is almost off) but the software modifies the brigtness in the acpi folder instead. Show key result is Left 0xe0 0x4b 0xe0 0xcb Right 0xe0 0x4d 0xe0 0xcd -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1254376 Title: Brightness settings changes have no effect. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1254376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1254376] Re: Brightness settings changes have no effect.
Here are the requested informations. As you will see there are two folders in /sys/class/backlight When I use the keyboards shortcuts to modify the brightness, the file /sys/class/backlight/acpi_video0/brightness is modified but it has no effect on the actual brightness. When I manually write the brightness into the file /sys/class/backlight/intel_backlight/brightness, the actual brightness is modified. Some software (like cairo dock manage to change the brightness). I guess they use the right folder. Nicolas ** Attachment added: Files requested on wiki.ubuntu.com https://bugs.launchpad.net/ubuntu/+bug/1254376/+attachment/3919207/+files/brightness_files.tar.bz2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1254376 Title: Brightness settings changes have no effect. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1254376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1254376] Re: Brightness settings changes have no effect.
Thank you for taking the time to report this bug and helping to make Ubuntu better. This is a known problem with some ACPI backlight drivers. Please read this article in order to debugging more this issue https://wiki.ubuntu.com/Kernel/Debugging/Backlight Please provide the additional information that are needed according to above article. Best Regards NikTh ** Package changed: gnome-control-center (Ubuntu) = ubuntu ** Changed in: ubuntu Status: New = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1254376 Title: Brightness settings changes have no effect. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1254376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
