Comment 2 for bug 1838839

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ucb-cy (ucb-cy) wrote :

New to the Ubuntu community & issue tracker so apologies if this comment should go elsewhere.

I am seeing the same behavior on Ubuntu 18.04.3 LTS (bionic) after following the procedure for compiling a new kernel at https://help.ubuntu.com/lts/installation-guide/amd64/ch08s06.html. The compile completes successfully but installation fails when running sudo dpkg -i ../linux-image...deb.

After adding "set -x" to /etc/kernel/postinst.d/x-grub-legacy-ec2 and /usr/sbin/update-grub-legacy-ec2, it looks like the /usr/sbin/update-grub-legacy-ec2 script is failing in the ucf_update_kernels function.

RET='20 Unsupported command "*" (full line was " * dkms: running auto installation service for kernel 4.15.18custom") received from confmodule.'