** Changed in: gnome-power-manager (Ubuntu)
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/726692
Title:
Screen backlight
I still have the same machine (upgraded/reinstalled to each Ubuntu
version since) and the problem has not happened in agesa
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This is still the same in a new install of Quantal (and IIRC it also
was the same in Precise. However, I had not made a reinstall of Precise,
but upgraded from Oneiric, so I didn't have to actually do anything to
make it work, and therefore I am not sure)
** Tags added: quantal
** Changed in:
[Expired for gnome-power-manager (Ubuntu) because there has been no
activity for 60 days.]
** Changed in: gnome-power-manager (Ubuntu)
Status: Incomplete = Expired
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On my MacBookPro 6,2 the bug is not reproducible on Oneiric. The
keyboard backlight controls work correctly out-of-the-box.
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I'm the OP and it works again for me in Oneiric without the xorg.conf
option. Same MacBook Pro 5.3.
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https://bugs.launchpad.net/bugs/726692
Title:
Screen
Damn, sorry, it's not fixed for me after all. Once again I got fooled by
the bubble appearing - but without the option, the brightness does not
change. This is all in an installed Oneiric by the way, I will try to
test with a live CD.
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I'm the OP and Ubuntu 11.04 continues to work for me with:
aptitude show nvidia-current
Package: nvidia-current
State: installed
Automatically installed: no
Version: 270.41.06-0ubuntu1
cat /var/log/Xorg.0.log
(...)
[17.876] (II) NVIDIA(0): NVIDIA GPU GeForce 9400M (C79) at
This workaround (with EnableBrightnessControl=1) does not work anymore
with nVidia driver 270.41.06 (in 11.04).
I heard about a possible solution: just add acpi_osi=Linux to kernel
options (in GRUB config or manually on boot). So far I have not tested
it. I can check it out after a few hours
Sorry, my previous comment #10 was incorrect. What worked again after
the reinstall was just the notification bubble, but it did not actually
change the brightness. I had to add the EnableBrightnessControl option
again, to the new xorg.conf that was created during installation. After
an X restart
I'm the OP and adjustment and bubble started to work again for me after
a new Natty install using yesterday's daily installer build, running
nvidia-current. (The installer installed 173, but current was
recommended in jockey. Anyway, the adjustment bubble worked with 173
as well)
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You
There is a very similar bug here: #743352. However with bug #743352 the
notification bubble appears to work and even
/sys/class/backlight/mbp_backlight/* seems to function, but without
correctly affecting the backlight.
Do sufferers of #726692 have the subtree
/sys/class/backlight/mbp_backlight/*
I have /sys/class/backlight/ but nothing below it. Though as per my
original comment my backlight adjustment still works with the keyboard
keys, having 'Option RegistryDwords EnableBrightnessControl=1' set.
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The keyboard backlight controls do work in Natty on my MacbookPro 3,1
[GeForce 8600M GT] using the nvidia-current (270.30-0ubuntu3) driver.
The notifications work as expected too.
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On the MacBookPro6.2 the keyboard controls do not work either. I have
not yet found a way to adjust the backlight, manually or otherwise.
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I can now confirm that the notification bubble does not appear under
Unity either.
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https://bugs.launchpad.net/bugs/726692
Title:
Screen backlight
Maybe this is an -nvidia bug, but if so there's not much we can do about
it at the distro level. So I think this would be better to be reviewed
by the g-p-m guys first.
If it does turn out to be something to do with -nvidia particularly, it
should be reported upstream - see
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