Feedback on the Dell Inspiron 3721

Hello Ivan,
For some system, you might need to install the proprietary driver to make the brightness control work.
If you still having problem with the proprietary driver installed, or there is no proprietary driver for your laptop.
I'll suggest you to open a bug by following the instructions in https://wiki.ubuntu.com/Kernel/Debugging/Backlight
Thanks

That's fine, no problems. I installed 12.04.00 and upgraded :)
I also found the workaround:
http://askubuntu.com/questions/293925/brightness-buttons-not-working-properly

Thank you any way!

08.01.2014 07:21, Po-Hsu Lin пишет:
> Your question #241510 on Ubuntu-Certification changed:
> https://answers.launchpad.net/ubuntu-certification/+question/241510
>
> Status: Open => Answered
>
> Po-Hsu Lin changed the question status:
> Hello Ivan,
> For some system, you might need to install the proprietary driver to make the brightness control work.
> If you still having problem with the proprietary driver installed, or there is no proprietary driver for your laptop.
> I'll suggest you to open a bug by following the instructions in https://wiki.ubuntu.com/Kernel/Debugging/Backlight
> Thanks
>

Congrats!
It looks like you are experiencing the bug that I linked here.
(bug 1231305 as well)

You can open a new bug report if it's ture.
Thanks!