Bug 692761 - Booting with external monitor plugged in disables built-in screen brightness adjustment until reboot
Summary: Booting with external monitor plugged in disables built-in screen brightness ...
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Fedora
Classification: Fedora
Component: hal
Version: 15
Hardware: x86_64
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Richard Hughes
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-04-01 04:56 UTC by Luke Hutchison
Modified: 2012-08-07 18:10 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2012-08-07 18:10:10 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Luke Hutchison 2011-04-01 04:56:49 UTC
On my Toshiba laptop, booting with an external monitor plugged into the VGA port disables adjustment of the built-in screen brightness setting until reboot, even if the VGA cable is later unplugged.

Pressing Fn+F6/F7 to adjust laptop panel brightness pops up the OSD, which does respond to the keypresses, but the actual brightness of the builtin panel does not change if the laptop was booted with an external monitor plugged in.  If I boot without an external monitor connected then it works fine.

Also, if I originally booted with an external monitor plugged in, powertop reports the panel power setting at the same percentage as the OSD display, but the builtin panel brightness never visibly changes.


Fedora 15 Alpha (power management test day snapshot)


Reproducibility: 100%


Smolt profile:
http://www.smolts.org/client/show/pub_23bfefe1-3686-445b-a57b-7a661a3325f6

Comment 1 Luke Hutchison 2011-04-01 04:57:21 UTC
See also Bug 692759.

Comment 2 Richard Hughes 2012-02-02 09:28:03 UTC
Is this fixed on F16? It seems to work for me on my wifes Toshiba.

Comment 3 Luke Hutchison 2012-02-03 15:47:59 UTC
Still broken for me on F16 on my own Toshiba laptop. Probably/possibly related to the fact that the VGA pipe can't be enabled unless I boot the machine with VGA plugged in.

Comment 4 Fedora End Of Life 2012-08-07 18:10:12 UTC
This message is a notice that Fedora 15 is now at end of life. Fedora
has stopped maintaining and issuing updates for Fedora 15. It is
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of '15' have been closed as WONTFIX.

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