Bug 8314 - Suspend-to-mem on MacBook destroys backlight control
Summary: Suspend-to-mem on MacBook destroys backlight control
Status: REJECTED INSUFFICIENT_DATA
Alias: None
Product: ACPI
Classification: Unclassified
Component: Power-Sleep-Wake (show other bugs)
Hardware: i386 Linux
: P2 normal
Assignee: Rafael J. Wysocki
URL:
Keywords:
Depends on:
Blocks: 7216
  Show dependency tree
 
Reported: 2007-04-08 20:56 UTC by Mike Harris
Modified: 2007-08-08 10:20 UTC (History)
2 users (show)

See Also:
Kernel Version: 2.6.21-rc6
Subsystem:
Regression: ---
Bisected commit-id:

Attachments
Kernel config (42.19 KB, text/plain)
2007-04-08 20:57 UTC, Mike Harris 		Details
Output of dmesg (30.31 KB, text/x-log)
2007-04-08 20:58 UTC, Mike Harris 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Mike Harris 2007-04-08 20:56:32 UTC 
Distribution: Fedora Core 6
Hardware Environment: MacBook Core Duo
Problem Description:
After resuming from a suspend-to-mem (echo "mem" > /sys/power/state), the 
backlight is set at maximum brightness.
When pbbuttonsd is running before the suspend, the backlight control no longer 
works after resume.
When pbbuttonsd is not running before the suspend, but started after a resume, 
it claims no backlight driver is available and backlight control does not 
work. This does not happen when pbbuttonsd is started on a "fresh" machine.
Comment 1 Mike Harris 2007-04-08 20:57:20 UTC 
Created attachment 11108 [details]
Kernel config
Comment 2 Mike Harris 2007-04-08 20:58:47 UTC 
Created attachment 11109 [details]
Output of dmesg
Comment 3 Adrian Bunk 2007-04-13 16:51:54 UTC 
Is this already present in older kerenel like 2.6.20 or is it a regression?
Comment 4 Mike Harris 2007-04-14 04:38:09 UTC 
Suspend hasn't worked correctly until 2.6.21-rc6, so it's a new bug.
Comment 5 Rafael J. Wysocki 2007-06-13 09:37:18 UTC 
What's the current status of this bug?
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