I got this error:

rmmod: ERROR: ../libkmod/libkmod.c:514 lookup_builtin_file() could not open builtin file '/lib/modules/4.15.0-29-generic/modules.builtin.bin'

  • Does this file /lib/modules/4.15.0-29-generic/modules.builtin.bin exists? Check. – Prvt_Yadv Mar 11 at 4:34
  • No, it does not, because as I just said, I just deleted it (modules.builtin.bin). I also have tried to reinstall 4.15.0-29-generic, but it doesnt work. – user341129 Mar 11 at 4:38

You should run

sudo depmod -a

to re-create the modules.builtin.bin file.

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