[LAU] Which kernel do you use?

Peder Hedlund peder at musikhuset.org
Wed Jan 28 08:04:05 UTC 2015

Quoting Hermann Meyer <brummer- at web.de>:

> Am 24.01.2015 um 08:14 schrieb Ralf Mardorf:
>> On Fri, 23 Jan 2015 20:53:21 -1000, david wrote:
>>> No desktop environment should require hardware acceleration to work.
>>> That way lies the Land of Windows Bloat!
>> Amen!
>> JFTR my stone age ATI graphics, when using the FLOSS driver, can be used
>> without any performance issues for Google Earth, it's quick as a flash,
>> but using Cinnamon is impossible. That's ridiculous! Cinnamon and
>> similar desktops are simply written by people who don't know how to
>> program correctly. It's not a driver acceleration issue, if it's
>> possible to use software such as Google Earth without performance
>> issues, but using a DE as Cinnamon is impossible.
> Seems like you are right, no problem/Xrun with   Kernel: 3.19.0-rc5
> x86_64 when I use LXDE instead of Cinnamon.
> So it seems that, as soon acceleration in the nouveau driver becomes
> improved, Cinnamon isn't suitable for Audio work anymore.

I don't think it's Cinnamon or nouveau per se.
When I use Compiz/XFCE and the NVIDIA binary driver I also get xruns  
even with fairly high latency settings on a stock 12.04 Ubuntu kernel.
Switching to xfwm4 allows me to go much lower.

To me it seems something in the compositing is the main culprit for  
killing low latency.

  - Peder

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