I tried to add in /boot/grub/menu.lst saome boot options.
At line after # defoptions=quiet splash I added:
- acpi=force - didn't work;
- acpi=force nolapic - didn't work;
- acpi=off - I been able to change brightness, but no battery status and
other options;
- noapic - it's work on my Dell
Public bug reported:
OS: Ubuntu 9.04
Laptop: Dell Studio 1555
After several minutes after boot I am not able to change display brightness
and in kern.log added error:
Jun 27 08:28:05 ja-laptop kernel: [ 62.100119] ACPI: EC: input buffer is not
empty, aborting transaction
** Affects: ubuntu
** Tags added: acpi brightness dell
** Attachment added: lspci.txt
http://launchpadlibrarian.net/28457079/lspci.txt
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No change display brightness
https://bugs.launchpad.net/bugs/392812
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