calculating band structure under electric field

[piquini]

I have made a slab calculation using an external electric field. Should I use the flags
EFIELD, LDIPOL and IDIPOL in the INCAR when calculating the band structure?

[bkiefer]

I have a similar question. I applied an electric field to a 3-d insulator using VASP 5.2.12, following the recipe in the manual for LiF. The computation completed without problems. As expected I saw changes to the electronic density of states. I would like to investigate the changes further by looking at the bandstructure under applied electric field.

As usual, I added ICHARG = 11 to the INCAR file and started from the previously generated CHGCAR file. VASP 5.2.12 stopped with the comment:

| Your generating k-point grid is not commensurate to the symmetry |
| of the lattice. This does not sit well in combination with the |
| PEAD routines, sorry ... |
| suggested SOLUTIONS: |
| ) if not already the case, use automatic k-point generation |
| ) shift your grid to Gamma (G) (e.g. required for hex or fcc lattice)

this is certainly correct since the electrical field breaks the symmetry.

Hence my question: has anyone found a solution to this question
or more precisely what is the correct input format for the KPOINTS file for the computations?