[Nouveau] Problem with GT520 and optimus on Fedora 17

[Emil Velikov]

On Mon, 09 Jul 2012 14:39:54 +0100, Gianluca Cecchi wrote:

> On Fri, Jun 22, 2012 at 1:06 PM, Emil Velikov wrote:
>
>> Honestly I do no believe you have is not caused by nouveau, moreover  
>> it's
>> an underlying ACPI problem causing nouveau to fail - note the ACPI  
>> errors
>> appear even before we're loading. That taken aside I would recommend if
>> you can bisect the problem as it would ease and fasten the resolution
>> Adding [bisected] to the bug [1] and CC the author of the patch would be
>> encouraged
>
> Sorry for the delay.
> I would like to help, but any link helping me to understand what to do
> to "bisect"...?
> I'm using a fedora kernel. I know that if I boot with
> kernel-3.3.7-1.fc17.x86_64 it works, while any other following kernel
> released not
> (right today I tried with kernel-3.4.4-5.fc17.x86_64).
>
> Thanks,
> Gianluca

  "Code Bisection is a method used in software development to identify  
change
  sets that result in a specific behavior change. It is mostly employed for
  finding the patch that introduced a bug. Another application area is  
finding
  the patch that indirectly fixed a bug." [1]

In other words in order to get it up and working it is encouraged to dig  
deep
into the issue and recompile the kernel a few times. Refer to
"Building a custom kernel" [2] or "koji bisecting kernel builds" [3]
for more information

Regards
Emil


[1] http://en.wikipedia.org/wiki/Code_Bisection
[2] http://fedoraproject.org/wiki/Building_a_custom_kernel
[3] http://jwboyer.livejournal.com/43007.html