  A system of chromodynamic fields, which can be treated as classical, is
generated at the earliest stage of relativistic heavy-ion collisions. Numerical
simulations show that the system is unstable but the nature of the instability
is not well understood. We study the problem systematically. In the first
paper, we have performed a linear stability analysis of space-time uniform
chromoelectric and chromomagnetic fields. There they have been considered the
Abelian configurations of single-color potentials linearly depending on
coordinates and nonAbelian ones where the fields are generated by the
multi-color non-commuting uniform potentials. Here we extend and supplement the
analysis. We discuss the parallel chromoelectric and chromomagnetic fields
which occur simultaneously. We also consider a general nonAbelian
configurations of the uniform fields. Finally, we discuss the gauge dependence
of our results.
