Comment 19 for bug 521509

Perfect! I tried Pegasus' remedy, by adding a
    rebootMixxxView();
at line 341 in
    src/mixxxview.cpp
from the sources of mixxx 1.7.2 (got with an apt-get source, apt-get build-deb and scons did the job of resolving the dependencies and compiling for me) and everything works fine.
System:
Linux antonio-laptop 2.6.31-10-rt #153-Ubuntu SMP PREEMPT RT Tue Jan 12 11:01:03 UTC 2010 x86_64 GNU/Linux
Video adapter:
NVIDIA(0): NVIDIA GPU GeForce Go 7300 (G72) at PCI:1:0:0 (GPU-0)
(proprietary NVIDIA driver installed and in use).
The problem appeared while upgrading from Karmik to Lucid and now disappeared.