This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1716438 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Tags added: xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1716438 Title: Failure to download linux-image-extra-*-generic causes initrd to be built incorrectly with no warning Status in linux package in Ubuntu: Incomplete Bug description: I've had this happen twice on kernel upgrades, most recently when linux-image-extra-4.4.0-95-generic failed to download due to an iffy connection. Because linux-image-4.4.0-95-generic did successfully download, its setup (run-parts: executing /etc/kernel/postinst.d/zz- update-grub 4.4.0-95-generic /boot/vmlinuz-4.4.0-95-generic) was run and an initrd file built. The problem is that the resulting initrd file is less than half the size it should be, lacking all of the drivers that would have come in from the "extra" package: -rw-r--r-- 1 root root 38288353 Aug 22 10:09 initrd.img-4.4.0-89-generic -rw-r--r-- 1 root root 38289328 Aug 22 10:11 initrd.img-4.4.0-93-generic -rw-r--r-- 1 root root 38371214 Sep 2 06:00 initrd.img-4.4.0-94-generic -rw-r--r-- 1 root root 16899714 Sep 11 12:15 initrd.img-4.4.0-95-generic The result is a system that upon reboot cannot access important things such as the network. Recovery involves putting hands on the console and using GRUB to manually select a prior kernel with a good initrd. Recommendation: Do not allow the build of initrd and consequent activation of the new kernel as default without making sure the extra package has been or can be installed if selected. At the very minimum, issue a warning that the system may not be properly rebootable. Note that the following information is compiled while booted from kernel 94 rather than the kernel 95 with the faulty initrd. # uname -a Linux xena 4.4.0-94-generic #117-Ubuntu SMP Tue Aug 29 08:13:56 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux # cat /proc/version_signature Ubuntu 4.4.0-94.117-generic 4.4.83 # cat /etc/os-release NAME="Ubuntu" VERSION="16.04.3 LTS (Xenial Xerus)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 16.04.3 LTS" VERSION_ID="16.04" HOME_URL="http://www.ubuntu.com/" SUPPORT_URL="http://help.ubuntu.com/" BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/" VERSION_CODENAME=xenial UBUNTU_CODENAME=xenial To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1716438/+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