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 1780806 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 -- 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/1780806 Title: Kernel 4.15.0 fails to boot with linux-modules-extra Status in linux package in Ubuntu: Incomplete Bug description: I upgraded my laptop (Sony VAIO SVS1511C5E, Intel Core i7-3612QM, NVIDIA GK107M / GeForce GT 640M LE, original hard disk changed to a Crucial SSD) yesterday from Ubuntu 17.10. to Ubuntu 18.04. The upgrade process went smoothly without issues. After upgrade, I cannot boot the new kernel version 4.15.0-23 in normal mode. The boot process hangs immediately after displaying "Loading initial ramdisk". In case I choose "Recovery mode", the system does boot successfully with the same kernel. I also tried installing kernels 4.15.0-22 and 4.15.0-24, which both behave identically. The problem seems to be related to the linux-modules-extra package. If the package is not installed, the system boots also in the normal mode. However, the display is not correctly recognized, it shows up as "Unknown display" with 1024x768 resolution. That also happens if I choose "Recovery mode" and "Resume boot". The previous kernel 4.13.0-46 (with linux-modules-extra installed) works without problems and the display is recognized correctly. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1780806/+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