Bug 702515

Summary: nv_backlight (from nouveau) not working
Product: [Fedora] Fedora Reporter: Solomon Peachy <pizza>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 14CC: gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-08-16 09:49:58 EDT Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Description Solomon Peachy 2011-05-05 19:58:48 EDT
Description of problem:

hitting the brightness keys in gnome causes the popop to appear, and the slider goes back and forth, but nothing changes.  Upon investigation it seems the right values are getting set to /sys/class/backlight/nv_backlight , but they are having no effect.

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


01:00.0 VGA compatible controller: nVidia Corporation G94 [GeForce 9800M GS] (rev a1)

ASUS G50vt notebook.

How reproducible:


Steps to Reproduce:
1.  Boot up.
2.  Hit brightness key
Actual results:

Brightness should change

Expected results:

Brightness does not change.

Additional info:

This laptop also exposes the brightness via acpi, ie /sys/class/backlight/acpi_video0, and adjusting the values there works.  However, there's no way to tell nouveau to not export the brightness control, nor is there a way to get gnome-power-manager to use a different backlight device.

This used to work fine before nouveau got backlight support.  This is functionally a regression.
Comment 1 Chuck Ebbert 2011-05-06 04:32:01 EDT
(In reply to comment #1)
> This used to work fine before nouveau got backlight support.  This is
> functionally a regression.

A regression since when? Fedora 13?
Comment 2 Fedora End Of Life 2012-08-16 09:50:02 EDT
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