Am 17.05.2017 um 12:22 schrieb Ken Smith <kens at kensnet.org>: > > As part of testing an alternative module I saved the original module and copied the test one in. The test was done and I put the original module back. > > Now the original module is not loading at startup and doing it manually I get the error > > WARNING: Error inserting {Module name & path } Required key not available. > > And in /var/log/messages shortly after boot I can see > > kernel: ksign: Installing public key data > Loading keyring > - Added public key D9FDC491F0A38D91 > - User ID: CentOS (Kernel Module GPG key) > > and I also see > > ksign: module signed with unknown public key > - signature keyid: 6aa10540a705b299 ver=4 > Module signed with unknown public key > > Logged when I try to manually load the original module. > > Has something not loaded at startup? Or what??? > > Puzzled - any ideas Not sure if i understand your problem. Try to regenerate the map files with # depmod -a -- LF