Bug 1277786

Summary: [drm:radeon_acpi_init [radeon]] *ERROR* Cannot find a backlight controller
Product: [Fedora] Fedora Reporter: Luya Tshimbalanga <luya>
Component: libdrmAssignee: Adam Jackson <ajax>
Status: CLOSED UPSTREAM QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 23CC: ajax, ignatenko, mcermak, rclark
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Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2016-03-20 13:54:06 UTC Type: Bug
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
dmesg boot report none

Description Luya Tshimbalanga 2015-11-04 04:23:52 UTC 
Created attachment 1089367 [details]
dmesg boot report

Description of problem:
This bug occured on boot causing function keys backlight unable for use. I don't know if this is a kernel issue but the message pointed to drm.

Version-Release number of selected component (if applicable):
2.4.65-1.

How reproducible:
Always

Steps to Reproduce:
1. Boot Fedora
2.
3.

Actual results:
[    7.684288] [drm:radeon_acpi_init [radeon]] *ERROR* Cannot find a backlight controller


Expected results:
Backlight control ready for use

Additional info:
Hardware specification posted on
https://fedoraproject.org/wiki/User:Luya/System
Comment 1 Igor Gnatenko 2016-03-20 13:54:06 UTC 
Please report to bugzilla.kernel.org/
Comment 2 Luya Tshimbalanga 2016-03-20 19:17:00 UTC 
Done