Ubuntu
linux package

  1. Bug #333386
  2. Comment #73

Comment 73 for bug 333386

Revision history for this message
Stefan Bader (smb) wrote : Re: Cannot change brightness with 2.6.27-11+ kernel

@gidantribal, Err, sorry, my fault of not being specific enough. The acpidump dumps your ACPI BIOS, so it will remain the same, regardless of the kernel. What I was interested in was the dmesg output which contains the messages from the boot.

@Jaya, while the effects are similar, I'd like to keep different Laptop vendors separate as they use different vendor methods to get backlight control. For ThinkPads (Ideapads might be similar) you often seem to get better results by forcing the kernel to use the vendor method. For that you need: "acpi_backlight=vendor" on the kernel command line and "options thinkpad_acpi brightness_enable=1" in a file in /etc/modprobe.d. If that does not work, can you please open a new bug with "ubuntu-bug linux"?