http://www.freedesktop.org/wiki/Software/hal/
** Changed in: hal (Ubuntu)
Status: New = Invalid
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https://bugs.launchpad.net/bugs/286599
Title:
Changing brightness does not work
can't confirm this on 9.10 as well as 10.04 - works as it should on my
6530b
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Changing brightness does not work on HP 6530b
https://bugs.launchpad.net/bugs/286599
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I have an Acer Aspire 3935 with exactly the same hardware. And I also
have the same problems.
For now, I found out that writing a brightness value to
/sys/class/backlight/acpi_video0/brightness saves the brightness (you
can see it in actual_brightness). It is even saved until the next reboot
-
Another fact is that before starting Ubuntu everything works fine. I can
change brightness with the Fn keys in BIOS or in GRUB, but not anymore
after that. Can this help? Is there a way to let go a command through
Linux and let the system behind do this job or something like that?
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Changing
I have found this issue:
https://bugs.launchpad.net/ubuntu/+source/hal/+bug/82188. I tried to it
this way, too. After echoing a new value into the brightness file it
seems to be parsed correctly and it has the same content like before
with the new current value. But the brightness of the display
