Am 29.07.20 um 20:43 schrieb Leon Fauster: > Am 16.06.20 um 22:04 schrieb Fabian Arrotin: >> On 16/06/2020 15:06, Leon Fauster via CentOS wrote: >>> Hi all, >>> >>> I updated a Dell XPS laptop from CentOS 8.1 (1911) to 8.2 (2004). >>> >>> Installed kernels are >>> kernel-4.18.0-147.5.1.el8_1.x86_64 >>> kernel-4.18.0-147.8.1.el8_1.x86_64 >>> kernel-4.18.0-193.6.3.el8_2.x86_64 >>> >>> Unfortunately I can not boot into the latest >>> kernel-4.18.0-193.6.3.el8_2.x86_64. >>> >>> After grub2 screen I only see following line: >>> >>> EFI stub: UEFI Secure Boot is enabled >>> >>> Booting into the older kernel is still possible. The >>> above line appears and after that the normal kernel >>> output scrolls over the screen (rhgb quiet disabled). >>> >>> Is the new kernel correctly signed? >>> >>> What can I do? >>> >>> -- >>> Thanks >>> Leon >> >> Hi Leon, >> >> Don't think that it's due to secureboot, as on my work laptop (thinkpad >> t490s), I have secureboot on, and kernel working fine. >> >> OTOH, on my family laptop (also in secureboot mode), when I updated from >> 8.1.1011 to 8.2.2004, laptop became unresponsive during the >> microcode_ctl update (in scriptlet) and after that it auto-reset itself >> , so in the middle of the whole rpm transaction. >> I tried to recover it but it was to a point where it was faster to just >> reinstall from scratch with 8.2.2004, which I did ... and in gnome, >> everything was fine, etc (adding repo, pkgs) but then on the *same* >> kernel it was installed with, just tried a reboot, and nothing : grub >> shows menu, you select kernel and on upper left there is only cursor >> (fixed) and nothing happens .. >> >> I'll try to diagnose what's the issue as actually that means troubles >> with family using that laptop :) > > > Did you got managed to boot kernel-4.18.0-193.14.2.el8_2 or a newer one? > I must still boot into kernel-4.18.0-147.8.1.el8_1.x86_64 ... and with > the upcoming new kernel that depends on a new shim and grub2 package I > wonder about the implications for my XPS hardware ... > JFYI: latest (kernel-4.18.0-227.el8.x86_64) 8-stream kernel is bootable on this machine ... (full updated (C8.2.2004) with latest shim, grub2 stuff. Just the kernel is from 8-stream) ... -- Leon