I have also a Macbook Pro 3.1 with Ubuntu 11.10. I can control the
brightness using the 3 keys (up/down/toggle) but the behavior is not the
right one. The up key works properly. The down key decreases the
brightness as expected but when the brightness is set to 0%, there is no
backlight (as
Another issue with the workaround is that the backlight does not obey
the ambient light sensor. That is, the backlighting always comes on
regardless of whether there is sufficient light detected or not. While
not ideal, this is better than no backlight at all!
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I can confirm this on another Sony Vaio S (VPCS11V9E) running 11.10. All
was fine in 11.04. Please let me know if I could debug this further
somehow.
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After some more digging, here's a quick solution for us Vaio S owners:
echo 1 | sudo tee /sys/devices/platform/sony-laptop/kbd_backlight
from https://bbs.archlinux.org/viewtopic.php?id=121566
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Hi Lauri,
You are a life saver!
But is there any way to make this effective across system reboots?
I have to run this command after each system restart
Thanks
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Still not working on my Sony Vaio S (11.10 Beta 2).
Always worked with 11.04 and stopped working somewhere between Beta 1 and Beta
2.
There are no keys on the Sony to switch this on and off (to my
knowledge). The keyboard backlighting is activated on keypress and if
the ambient low detected is
This is now working on my machine with 11.04 Beta 2.
** Changed in: gnome-power-manager (Ubuntu)
Status: Confirmed = Fix Released
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I have the same problem on my Sony Vaio. At some point, an update
caused backlighting to stop working.
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https://bugs.launchpad.net/bugs/849110
Title:
** Changed in: gnome-power-manager (Ubuntu)
Status: New = Confirmed
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https://bugs.launchpad.net/bugs/849110
Title:
Regression: keyboard backlight
** Description changed:
They keyboard backlight control hotkeys on my Macbook Pro (3,1) no
longer function properly in 11.10. This is a regression from 11.04, and
I believe a regression from 11.10 beta 1.
There are 3 keys on the keyboard:
- Keyboard backlight off
+ Keyboard backlight
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