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Bug 569317 - -l no longer works
-l no longer works
Product: Fedora
Classification: Fedora
Component: acpitool (Show other bugs)
x86_64 Linux
low Severity low
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Assigned To: Steven M. Parrish
Fedora Extras Quality Assurance
Depends On:
  Show dependency treegraph
Reported: 2010-03-01 04:57 EST by Jan Kratochvil
Modified: 2010-03-14 03:30 EDT (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2010-03-14 03:30:29 EDT
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Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:

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Description Jan Kratochvil 2010-03-01 04:57:47 EST
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):

How reproducible:

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
Comment 1 Steven M. Parrish 2010-03-13 22:00:51 EST
This is something that needs to be reported to the upstream developers.

Please report it at

Comment 2 Jan Kratochvil 2010-03-14 03:30:29 EDT
Posted as:
(but some other two bugs are open there since 2007)

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