If neither of the suggestions in the link helped, the last resort is to
increase the value of the parameter nx in PW/src/wsweight.f90
In extremely rare cacse the default nx=2 may not be enough to find the
correct Wigner-Seitz cell (the Brillouin zone actually, in this case)
try to set nx=3 lik
Dear PWSCF users/experts,
While calculating phonon for few different pressures (for instance, 26 GPa,
28 GPa, 30 GPa, 32GPa ) of my system, first I performed q2r.x calculation
and it successfully read force constant from the file. After that when I
was performing matdyn.x calculation, I found the
