[Bug 704544] Re: brightness keys don't work on HP Elitebook 8540p
[Expired for gnome-power-manager (Ubuntu) because there has been no activity for 60 days.] ** Changed in: gnome-power-manager (Ubuntu) Status: Incomplete = Expired -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in Ubuntu. https://bugs.launchpad.net/bugs/704544 Title: brightness keys don't work on HP Elitebook 8540p To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/704544/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 704544] Re: brightness keys don't work on HP Elitebook 8540p
I have the same issue after upgrading to 11.04. I tested with a new user profile and experienced the same issue. Below are the commands to bind brightness to a keyboard shortcut in 11.04: To decrease brightness: echo $((`cat /sys/devices/virtual/backlight/acpi_video0/brightness`-1)) /sys/devices/virtual/backlight/acpi_video0/brightness To increase brightness: echo $((`cat /sys/devices/virtual/backlight/acpi_video0/brightness`+1)) /sys/devices/virtual/backlight/acpi_video0/brightness -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in Ubuntu. https://bugs.launchpad.net/bugs/704544 Title: brightness keys don't work on HP Elitebook 8540p -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 704544] Re: brightness keys don't work on HP Elitebook 8540p
You can install NVIDIA proprietary drivers, after installation and reboot you will be able to control brightness (this works for me). So I think this bug is related to open source driver for NVIDIA graphics cards. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu. https://bugs.launchpad.net/bugs/704544 Title: brightness keys don't work on HP Elitebook 8540p -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 704544] Re: brightness keys don't work on HP Elitebook 8540p
Oh sorry, I did not read bug's description carefully. It is about functional keys. The didn't work for me as well. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu. https://bugs.launchpad.net/bugs/704544 Title: brightness keys don't work on HP Elitebook 8540p -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 704544] Re: brightness keys don't work on HP Elitebook 8540p
** Attachment added: lspci -v https://bugs.launchpad.net/bugs/704544/+attachment/1798249/+files/lspci ** Description changed: Binary package hint: gnome-power-manager Pressing either the fn f9 (brightness down) or fn f10 (brightness up) results in the brightness control appearing on screen, however the brightness level is not adjusted, and the on-screen brightness slider - does change position. + does not change the position. Description: Ubuntu 10.10 Release: 10.10 gnome-power-manager 2.32.0-0ubuntu1 policykit-1 0.96-2ubuntu1 Running gnome-power-manager -v reveals this error when attempting to adjust the brightness level pkexec /usr/sbin/gnome-power-backlight-helper --set-brightness 23 ** ERROR:pkexec.c:124:pam_conversation_function: code should not be reached Aborted Running the command manually also results in the same error. - Manually adjusting the brightness via the command line also works, for example + Manually adjusting the brightness via the command line works, for example sudo echo 50 /proc/acpi/video/DGFX/LCD/brightness -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu. https://bugs.launchpad.net/bugs/704544 Title: brightness keys don't work on HP Elitebook 8540p -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 704544] Re: brightness keys don't work on HP Elitebook 8540p
For those users that are trying to apply a work around by editing a HAL component *.fdi, and find that you don't have those files, it's because you performed a new install off 10.10, and HAL is not installed by default, it's depreciated, that's not your solution. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu. https://bugs.launchpad.net/bugs/704544 Title: brightness keys don't work on HP Elitebook 8540p -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 704544] Re: brightness keys don't work on HP Elitebook 8540p
FYI for the general public looking for a workaround. I was able to
workaround this by manually mapping command shortcuts to keys using
compiz. If you don't use compiz, I'm sure you can do this using some
other Gnome functionality. You may need to play with the path
/proc/aci/video/DGFX/LCD/brightness, depending on your video card.
Also if you don't run as root, like most sane users (unlike me), you
will have to figure out the proper place to enter 'sudo' for this to
work, probably ..ness{} sudo echo $.., play with the command. You
will also want to add the command to /etc/sudoers so that it doesn't
prompt you for the password before running the command.
Using CompizConfig Settings Manager, in ccsm Under - General - Commands
Command 0
cat /proc/acpi/video/DGFX/LCD/brightness | grep current | cut -d \ -f2
| xargs -i{} sh -c 'brightness={} echo $(($brightness-10))
/proc/acpi/video/DGFX/LCD/brightness'
Command 1
cat /proc/acpi/video/DGFX/LCD/brightness | grep current | cut -d \ -f2
| xargs -i{} sh -c 'brightness={} echo $(($brightness+10))
/proc/acpi/video/DGFX/LCD/brightness'
Under the Key Bindings tab, I was able to bind Command 0 to Fn-F9
(XF86MonBrightnessDown) and Fn-F10 to XF86MonBrightnessUp .. and wala,
it works for me!
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https://bugs.launchpad.net/bugs/704544
Title:
brightness keys don't work on HP Elitebook 8540p
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