Ubuntu
nvidia-prime package

after upgrade 0.51 to 0.52 on ubuntu 14.04 no brightness control

Bug #1264600 reported by André Ricardo
20
This bug affects 4 people
Affects Status Importance Assigned to Milestone
nvidia-prime (Ubuntu)
Confirmed
Medium
Unassigned

Bug Description

brightness control stop working after upgrade to 0.52. need grub "acpi_osi='!Windows 2012" (is a problem because i don t have 10 levels of control, only 5"

asus k56cb default ubuntu kernel (i used upstream without no result)

Tags: trusty
Revision history for this message
Flames_in_Paradise (ellisistfroh-deactivatedaccount) wrote :

hi!

It is of great value to attach required files to the bug-report...

Pls read carefully:

https://help.ubuntu.com//community/ReportingBugs

This may help to define & eliminate the probable cause ;-)

tags: added: trusty
Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in nvidia-prime (Ubuntu):
status: New → Confirmed
Revision history for this message
Alberto Salvia Novella (es20490446e) wrote :

It affects a non-essential hardware component (removable network card, camera, web-cam, music player, sound card, power management feature, printer...).

Changed in nvidia-prime (Ubuntu):
importance: Undecided → Medium
Revision history for this message
Joar Jegleim (joar-jegleim) wrote :

I've been using 304.x since 13.04 or mabye 12.10, don't remember.
Running 14.04 beta now brightness control stopped working even with 304.x driver.
I've got Qaudro fx 1000m .
Tried latest 331.38 and still doesn't work .

For other people coming across this bug, I found an app that got brightness control working:
https://apps.ubuntu.com/cat/applications/precise/brightness-controller/

that app works with 304.x as well as with 331.38 for me .

Who 'own' this bug, Nvidia or Ubuntu / Linux kernel or something else (?) .
I'm thinking it must be nvidia, that'd be guessing, I really don't have any clue, just thinking out loud here.

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