[Expired for hal (Ubuntu) because there has been no activity for 60
days.]
** Changed in: hal (Ubuntu)
Status: Incomplete = Expired
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https://bugs.launchpad.net/bugs/82188
Title:
Mahmoud can you confirm this bug is fixed? Thank you for helping us!
** Changed in: hal (Ubuntu)
Status: Confirmed = Incomplete
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Title:
Using Ubuntu 10.04, HP laptop display brightness can be adjusted from
Power Management (System Preferences Power Management) or using the
command line but can not be adjusted with Fn key on Ubuntu 10.04.
/proc/acpi/video/VGA/LCD# echo 50 brightness
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Brightness control via ACPI in HP
Can you check if this bug is still present in Ubuntu 9.10 Karmic Koala?
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Brightness control via ACPI in HP notebooks
https://bugs.launchpad.net/bugs/82188
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I think this is related to
https://bugs.launchpad.net/ubuntu/+source/hal/+bug/201433, except for
the drivers involved. Actually looks like the drivers are not working
correctly, but APCI is, so why not just use ACPI in hal for changing the
brightness?
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Brightness control via ACPI in HP
** Changed in: hal (Ubuntu)
Status: New = Confirmed
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Brightness control via ACPI in HP notebooks
https://bugs.launchpad.net/bugs/82188
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I tried a newer BIOS (f.39) again in the hope that bug would have been
fixed, as the older bioses cause other bugs for me, but the brighness
adjustment still will not work.
I think the bug actually isn't in hal but in the kernel (acpi module?). It
seems that the /proc/acpi interface is
Try typing the following command in a terminal:
xgamma -gamma 0.75
If that doesn't work you need to install xgamma from the repos.
I have posted my own solution here on setting it up:
http://ubuntuforums.org/showthread.php?p=4168042#post4168042
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Brightness control via ACPI in HP notebooks
** Tags added: brightness
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I can confirm this problem on an intel core 2 duo dv2100t with bios
versions f.22-f.26. The older versions of the bios (f.11 and f.12) work
perfectly but intel's VT virtualization is disabled in them.
Downgrading the bios will probably solve the problem.The older bios versions
are not listed on
Hey really thank you for this information, but i tried and the installer
said that it's not for my notebook, but I have a pavilion dv2000,
there's any way to force??
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Brightness control via ACPI in HP notebooks
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You received this bug notification because
Hi, I have a laptop HP DV2000 series (dv2033ea) and when I upgrade the
bios, I have this problem! If I increase or decrease the bright, with Fn
keys, bright comes to MAX and i cant decrease it. It's really a problem
for me, becouse my laptop battery is not too biger...and i cant use it
for more
I think I have the same problem with you. My laptop is HP dv2210us
which is a model of dv2000z series. I cannot adjust the LCD brightness
through Fn keys. Moreover, there is no brightness slider in gnome-
power-management. I then install Kubuntu which I use more often before,
however, the
Removed the duplicate status, sorry. I thought they were essentially the
same problem. In fact I just tried the solution with an Acer Laptop
suffering from the same symptoms and met the same results.
** This bug is no longer a duplicate of bug 68617
bashism in
*** This bug is a duplicate of bug 68617 ***
This fix does not work for me and I think that my problem is located in
a different place. I do not have a possibility to adjust brightness in
Power Management in Gnome - it seems that Ubuntu is unaware of the fact
that the brightness of my LCD can be
*** This bug is a duplicate of bug 68617 ***
I just wanted to add that all the HP notebook users would be extremely
happy if this thing would get fixed. Running the LCD all the time at the
full brightness really decreases the battery life and is, together with
the suspend issue, one of the two
Yes, I would like the power managment to be able to adjust the
brightness if running on batteries. For example there is a simple Power
Manager in Kubuntu, and, in general, it allows to setup brightness if
running on batteries. This tool does not allow to set up brightness on
my notebook - I've
*** This bug is a duplicate of bug 68617 ***
You're correct actually and as such this bug becomes a duplicate of bug
#68617
The good news is that there is a fix, located in that report or even
nicer in this page:
http://www.ubuntuforums.org/showthread.php?t=305141
Hope this works out for you.
Thanks for the report,
Just for clarification, what you're trying to say is that going through
gnome System Preferences Power Management doesn't have any options
to adjust the brightness? Is that what your issue is? I just want to
classify this in the right area by pinpointing where else
This is a zipped /proc directory. I will be happy to run any tests or
submit a DSDT or help in any other way.
** Attachment added: the zipped /proc directory
http://librarian.launchpad.net/5932008/proc.zip
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Brightness control via ACPI in HP notebooks
https://launchpad.net/bugs/82188
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** Attachment added: the same file after update to the F.0A BIOS
http://librarian.launchpad.net/5933073/procF0A.zip
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Brightness control via ACPI in HP notebooks
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