Description of problem: I was using "acpitool -l 7" successfully before but it no longer works - expecting due to the current kernel. Using Lenovo Thinkpad T60, BIOS 79ETE5WW (2.25). Version-Release number of selected component (if applicable): acpitool-0.5.1-1.fc12.x86_64 kernel-2.6.32.8-58.fc12.x86_64 How reproducible: Always. Steps to Reproduce: acpitool -l 7 Actual results: Could not open file: /proc/acpi/ibm/brightness for writing. Expected results: Brightness set. Additional info: # tail -n999 /proc/acpi/video/*/*/brightness ==> /proc/acpi/video/VID1/CRT0/brightness <== <not supported> ==> /proc/acpi/video/VID1/DVI0/brightness <== <not supported> ==> /proc/acpi/video/VID1/LCD0/brightness <== levels: 30 40 50 60 70 80 90 100 current: 100 # echo 100 >/proc/acpi/video/VID1/LCD0/brightness works fine
This is something that needs to be reported to the upstream developers. Please report it at http://freeunix.dyndns.org:8000/site2/acpitool.shtml Thanks
Posted as: https://sourceforge.net/tracker/?func=detail&aid=2970132&group_id=111358&atid=659017 (but some other two bugs are open there since 2007)