Brightness control does not work on Dell Studio 1555
Bug #494512 reported by
Sayak Banerjee
This bug report is a duplicate of:
Bug #392812: Dell Studio 1555: cannot change display brightness after a while, other hotkeys and ACPI stuff begin to fail.
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This bug affects 2 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
New
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Undecided
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Unassigned |
Bug Description
Using kernel 2.6.31-16-generic with a 64-bit Kubuntu 9.10 Karmic copy.
The brightness initially works after booting up, for a minute or two (only using the brightness keys though -- powerdevil slider doesnt work at all). After some time, the brightness keys do not do anything. Hence to change brightness, the only way is to reboot the computer.
Please post if any other information is required.
tags: | added: kernel-series-unknown |
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Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately, we can't fix it without more information.
Please run the following command after you encounter the issue which will attach necessary information:
apport-collect 494512
Bear in mind that you may need to install the python-launchpadlib package from the universe repository with 'sudo apt-get install python- launchpadlib' . Additionally, when prompted to give apport-collect permissions for Launchpad you will need to give it at least the ability to "Change Non-Private" data as it will be adding information to your bug report.
If you cannot use apport please at least add the following information (pay attention to lspci's additional options): signature > version.log
First run the following commands:
1) uname -a > uname-a.log
2) dmesg > dmesg.log
3) sudo lspci -vvnn > lspci-vvnn.log
4) cat /proc/version_
then attach the files separately to the bug report (not pasted into comments or tar/zip-ed).
For your reference, the full description of procedures for kernel-related bug reports is available at https:/ /wiki.ubuntu. com/KernelTeam/ KernelTeamBugPo licies. Thanks in advance!