Dear kernel developers I reported a bug at Bugzilla, but Greg Kroah-Hartman pointed me in mailing lists. Here's my bug report: Linux has been unbootable for me from 4.18 upwards. Even the fallback image does not boot. This has not been fixed yet in 4.19-rc3. acpi=off kernel parameter lets me boot 4.18.6 and 4.19-rc3. I used git bisect to track down the first bad commit: 84c8b58ed3addf17d3beb2e5037b001ffa65c5ef The commit is about: "ACPI / hotplug / PCI: Don't scan bridges managed by native hotplug" https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=84c8b58ed3addf17d3beb2e5037b001ffa65c5ef Linux 4.17 booted fine. Reverting commit 84c8b58ed3addf17d3beb2e5037b001ffa65c5ef makes 4.18 and 4.19-rc3 bootable again (without the acpi=off parameter). Information about my system: Model: HP 6730b laptop CPU: Intel Core 2 Duo P8600 Boot manager: systemd-boot (UEFI) More information of my system as attachments on the bug report at Bugzilla. Link to the bug report: https://bugzilla.kernel.org/show_bug.cgi?id=201127 Thanks for all the good work! -Peter
