The fix here breaks installing custom kernels, at least on xenial (dkms (2.2.0.3-2ubuntu11.7) xenial): the redirection of stdout was to there to fix a problem with dkms output contaminating debconf's input - see #292606 for details. To be specific, during package install (either via dpkg or apt-get) I'm now getting the following error from /usr/sbin /update-grub-legacy-ec2 which is run from /etc/kernel/postinst.d/x-grub- legacy-ec2 (after running /etc/kernel/postinst.d/dkms):
20 Unsupported command "*" (full line was " * dkms: running auto installation service for kernel ...") received from confmodule. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to dkms in Ubuntu. https://bugs.launchpad.net/bugs/1827697 Title: Enroll key whiptail prompt blocks kernel header package upgrades Status in dkms package in Ubuntu: Fix Released Status in dkms source package in Xenial: Fix Released Status in dkms source package in Bionic: Fix Released Status in dkms source package in Cosmic: Fix Released Status in dkms source package in Disco: Fix Released Status in dkms source package in Eoan: Fix Released Bug description: I noticed that sometimes the system upgrade is blocked in the kernel header package's configure phase, in the process manager I found that it is blocked by the "Configuring Secure Boot" whiptail prompt started by `update-secureboot-policy --enroll-key` which doesn't surface to the terminal and hence not interactable. Refer the attached screenshot for the process status at the time. [Test Case] 1. Install any out-of-tree dkms packages (like bbswitch-dkms) 2. Un-enroll keys from MOK, ensure `mokutil --test-key /var/lib/shim-signed/mok/MOK.der` command returns "/var/lib/shim-signed/mok/MOK.der is not enrolled" 3. Ensure SecureBoot is enabled 4. Install any linux-headers-${version}-generic packages that is currently not installed, verify if it stucks at configurating state [Regression potential] Since this change will cause the output of dkms_autoinstaller to appear in the output of the kernel installs, this may surprise consumers of the dpkg log with its verbosity. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dkms/+bug/1827697/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
