You rebuilt the package with a different compiler than what was used to compute the signatures/checksums in the kernel build, so you get different objects and mismatching checksums. This is expected.
** Changed in: linux-restricted-modules-oracle (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-restricted-modules-oracle in Ubuntu. https://bugs.launchpad.net/bugs/1870094 Title: ftbfs in focal Status in linux-restricted-modules-oracle package in Ubuntu: Invalid Bug description: seen in the second focal test rebuild https://launchpad.net/ubuntu/+archive/test-rebuild-20200327-focal/+build/18946778/+files/buildlog_ubuntu-focal-amd64.linux-restricted-modules-oracle_5.4.0-1005.5_BUILDING.txt.gz II: dkms-build installing nvidia-390 into /<<PKGBUILDDIR>>/debian/linux-modules-nvidia-390-5.4.0-1005-oracle/lib/modules/5.4.0-1005-oracle/kernel/nvidia-390 copying nvidia-uvm.ko copying nvidia.ko copying nvidia-drm.ko copying nvidia-modeset.ko II: dkms-build override dkms-build--nvidia-N found, executing II: checking gcc version ... GCC: (Ubuntu 9.2.1-31ubuntu3) 9.2.1 20200306 gcc (Ubuntu 9.3.0-8ubuntu1) 9.3.0 Copyright (C) 2019 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. WW: gcc version missmatch between linux and linux-restricted-modules WW: was: gcc (Ubuntu 9.2.1-31ubuntu3) 9.2.1 20200306 is: gcc (Ubuntu 9.3.0-8ubuntu1) 9.3.0 II: adding signatures from /usr/lib/linux/5.4.0-1005-oracle ... nvidia-drm.ko: FAILED nvidia-modeset.ko: FAILED nvidia-uvm.ko: FAILED nvidia.ko: FAILED sha256sum: WARNING: 4 computed checksums did NOT match make[1]: *** [debian/rules:129: nvidia-oracle] Error 1 make[1]: Leaving directory '/<<PKGBUILDDIR>>' make: *** [debian/rules:82: binary] Error 2 dpkg-buildpackage: error: fakeroot debian/rules binary subprocess returned exit status 2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-restricted-modules-oracle/+bug/1870094/+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