11.10 to 12.04 alpha on Macbook Pro

Bug #949088 reported by Asher Bond on 2012-03-07
This bug affects 1 person
Affects Status Importance Assigned to Milestone
acpi (Ubuntu)

Bug Description

After I upgrade to 12.04 I can't change my brightness and dim

And the F1 and F2 key not working to change the brighness
My laptop is Macbook Pro


Asher Bond (asher-bond) wrote :

When in 11.10 nvidia proprietary drivers were enabled, disabled nvidia drivers and display looked blurry, then changed display adapter drivers to post version nvidia proprietary and rebooted... now the brightness changes sometimes... using the f1 and f2 keys shows the brightness bar changing, but the brightness only changes sometimes (viewing the desktop initially upon startup, but not when running applications such as firefox/chrome)

Asher Bond (asher-bond) on 2012-03-07
tags: added: nvidia
tags: added: brightness
tags: added: precise
porl (sheean) wrote :

I have similar issues (macbook pro 5,3):
when I start with lower brightness (on battery for example) the brightness up (f2) control works fine. turning brightness down however (f1) appears to work while holding it down, but then 'resets' to full brightness when the key is released.

running latest 12.04 updates as of today (2012.04.14)

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