Janne Moren, this bug was reported a while ago and there hasn't been any
activity in it recently. We were wondering if this is still an issue?
Can you try with the latest development release of Ubuntu? ISO CD images
are available from http://cdimage.ubuntu.com/releases/ .
If it remains an issue,
Christopher, this bug was fixed for me long ago - not sure exactly when,
but at least 11.10 worked perfectly out of the box, as does 12.04.
Frankly, I'd forgotten I ever filed this bug and had no thought about
revisiting it with new information.
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Janne Moren, this bug report is being closed due to your last comment
regarding this being fixed with an update. For future reference you can
manage the status of your own bugs by clicking on the current status in
the yellow line and then choosing a new status in the revealed drop down
box. You
** Changed in: linux (Ubuntu)
Status: New = Confirmed
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https://bugs.launchpad.net/bugs/588983
Title:
Kernel backlight driver does not physically change the light level
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I can confirm that this seems to work. I get the impression that turning
it back to full doesn't actually take it all the way to the initial
maximum brightness, but it's hard to compare - I may well just imagine
it. The values in the backlight class under /sys certainly thinks it's
set at the
A solution for this problem that works for me (ubuntu 10.10,
2.6.35-24 kernel) is described here
http://ubuntuforums.org/showthread.php?t=1612560
In a nutshell, add the kernel option acpi_osi= to grub, by executing
$ gksudo gedit /etc/default/grub
(which calls an editor) to replace in the file
Same problem here. I'm running 11.04 i686 on my new CF-S9, everything
works except brightness control.
Is there anything i can do to help solve this problem?
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** Tags added: acpi-no-handler
** Tags added: acpi-parse-exec-fail
** Tags added: acpi
** Tags added: acpi-bad-address
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https://bugs.launchpad.net/bugs/588983
Title:
Kernel
** Changed in: debian
Status: Unknown = Confirmed
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Kernel backlight driver does not physically change the light level
https://bugs.launchpad.net/bugs/588983
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ubuntu-bugs
Bug reporter does not confirm that the issue was fixed.
** Also affects: debian via
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=587014
Importance: Unknown
Status: Unknown
** Changed in: linux (Ubuntu)
Status: Incomplete = New
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Kernel backlight driver does not
I experience the same problems with recent Debian kernels.
Bug reported there too: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=587014
** Bug watch added: Debian Bug tracker #587014
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=587014
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Kernel backlight driver does not physically
Anything else I can do to help diagnose this?
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Kernel backlight driver does not physically change the light level
https://bugs.launchpad.net/bugs/588983
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Hi Janne,
If you could also please test the latest upstream kernel available that would
be great. It will allow additional upstream developers to examine the issue.
Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the
upstream kernel, please remove the
I tested with mainline kernel 2.6.35-999-generic (linux-
image-2.6.35-999-generic_2.6.35-999.201006021335_amd64.deb) of
2010-05-31, the latest available build. No difference at all. Same
problem.
** Tags removed: needs-upstream-testing
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Kernel backlight driver does not physically change the
** Attachment added: AlsaDevices.txt
http://launchpadlibrarian.net/49582740/AlsaDevices.txt
** Attachment added: AplayDevices.txt
http://launchpadlibrarian.net/49582741/AplayDevices.txt
** Attachment added: BootDmesg.txt
http://launchpadlibrarian.net/49582742/BootDmesg.txt
**
why do you have the architecture marked as amd, when it uses and intel
chipset?
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Kernel backlight driver does not physically change the light level
https://bugs.launchpad.net/bugs/588983
You received this bug notification because you are a member of Ubuntu
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Because the 64-bit x86 architecture is called amd64, as amd originated
those extensions? As opposed to the Itanium architecture from Intel
which never took off? All the added information here is collected
automagically by the ubuntu-bug application, so if that's the wrong name
for it you should
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