Hab dazu folgendes gefunden:
Aber wenn ich das z.b. auf 0 stelle wirds noch schlimmer.- Debian users who encounter effects such as skips in mp3
playback, jerky mouse movement may want to stop the
X server from renicing itself to -10
You can alter this permanently with 'dpkg-reconfigure xserver-common';
if you elect not to have /etc/X11/Xwrapper.config managed by debconf,
simply edit it directly.

Weiß da jemand, was man dagegen tun kann?