Red Hat Bugzilla – Bug 569317
-l no longer works
Last modified: 2010-03-14 03:30:29 EDT
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):
Steps to Reproduce:
acpitool -l 7
Could not open file: /proc/acpi/ibm/brightness for writing.
# tail -n999 /proc/acpi/video/*/*/brightness
==> /proc/acpi/video/VID1/CRT0/brightness <==
==> /proc/acpi/video/VID1/DVI0/brightness <==
==> /proc/acpi/video/VID1/LCD0/brightness <==
levels: 30 40 50 60 70 80 90 100
# echo 100 >/proc/acpi/video/VID1/LCD0/brightness
This is something that needs to be reported to the upstream developers.
Please report it at http://freeunix.dyndns.org:8000/site2/acpitool.shtml
(but some other two bugs are open there since 2007)