Re: Bug#706603: general: laptop freeze on adjusting brightness
On Thu, May 02, 2013 at 05:23:42AM -0400, giri wrote:
> Package: general
> Severity: normal
> Dear Maintainer,
> *** Please consider answering these questions, where appropriate ***
> * What led up to the situation?
> while adjusting screen brightness
> * What exactly did you do (or not do) that was effective (or
> used laptop dedicated buttons to adjust screen brightness
> * What was the outcome of this action?
> system freeze
> * What outcome did you expect instead?
> screen brightness to be adjusted without problems
I had the same problem a while ago on a Dell Inspiron N5010, and I was able to
work around it by using the following configuration in /etc/default/grub
There is actually an open kernel bug report regarding this issue in
Based on the discussions on that thread, you may also want to try the following
kernel boot parameter, if the one above is not effective:
For me, the second one was irrelevant, and the issue has gone by only including
acpi_backlight=vendor. Note, however, that this workarounds are not reliable
across all systems with intel graphics. They might fix the issue on some
systems, but are completely useless on others, so I hope this helps in your