Bug 646322 - cannot control display brightness
cannot control display brightness
Product: Fedora
Classification: Fedora
Component: kernel-module-thinkpad (Show other bugs)
Unspecified Unspecified
low Severity medium
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Assigned To: Jason Carpenter
Fedora Extras Quality Assurance
Depends On:
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Reported: 2010-10-25 03:12 EDT by Tomeu Vizoso
Modified: 2012-08-16 14:21 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2012-08-16 14:21:35 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Tomeu Vizoso 2010-10-25 03:12:39 EDT
Description of problem:

When trying to change the brightness of the display, the OSD dialog pops up and changes accordingly, but the actual brightness of the display doesn't change.

Version-Release number of selected component (if applicable):

How reproducible:


Additional info:

Setting the contents of /sys/class/backlight/acpi_video0/brightness doesn't change the actual brightness either.

If I reload the thinkpad_acpi module with brightness_enable=1, then /sys/class/backlight/thinkpad_screen appears and writing to /sys/class/backlight/thinkpad_screen does change the brightness. Also, the brightness keys work.
Comment 1 Fedora End Of Life 2012-08-16 14:21:37 EDT
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