[Expired for Ubuntu because there has been no activity for 60 days.]
** Changed in: ubuntu
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1254376
Title:
Brightne
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.
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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"
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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 my
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 th
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 informatio
