Same here, DELL LATITUDE 7400, lscpu: Model name: Intel(R) Core(TM)
i5-8365U CPU @ 1.60GHz
After all my problem is solved by adding the "dis_ucode_ldr" after
"quiet splash". Thank you guys.
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https://bugs.launchpad.net/bugs/1829620
Title:
i7-8565U, sig=0x806eb/20190514, intel-microcode on ASUS makes kernel
stuck during loading initramfs on bionic-updates, bionic-security
Status in intel-microcode package in Ubuntu:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Status in linux-hwe package in Ubuntu:
Confirmed
Status in linux-hwe-edge package in Ubuntu:
Confirmed
Bug description:
Description:
- my system gets stuck at "Booting, Loading initramfs" (the first 2 lines of
booting, after grub)
- does not even show the enter cryptsetup passphrase
- affected kernels:
# apt list --installed |grep linux-signed
WARNING: apt does not have a stable CLI interface. Use with caution in
scripts.
linux-signed-generic/bionic-security,bionic-updates,now 4.15.0.50.52 amd64
[installed]
linux-signed-generic-hwe-18.04/bionic-security,bionic-updates,now
4.18.0.20.70 amd64 [installed]
linux-signed-generic-hwe-18.04-edge/bionic-security,bionic-updates,now
5.0.0.15.71 amd64 [installed]
- the setup is not new, has been working perfectly before (about 7
days since my last restart?)
System:
- HW: ASUS Zenbook 14 UX433FN
- Ubuntu 18.04, runing latest HWE, fully updated
- grub(-pc), cryptsetup (crypttab entries for custom encrypted LUKS setup),
Suspected/possible cause?:
- recent intel-microcode package update
- recent kernel package updates
Steps taken:
- tried to remove "splash quiet" from grub/kernel cmd line (also tried adding
nosplash, noplymouth)
- completely removed nvidia drivers (apt purge *nvidia*)
- completely purged and reinstalled grub (grup-pc)
- completely purged and reinstalled all kernels (headers, modules, image, ..)
- toggle BIOS "fastboot" (now using OFF)
- toggle UEFI SecureBoot (now using ON)
- remove plymouth (apt remove *plymouth* , but the workaround is working with
plymouth installed)
Workaround:
- so far, I'm only able to boot with non-Ubuntu kernel!
(linux-image-liquorix-amd64)
- which needs "splash" option ON
- reinstall cryptsetup & update-grub (as suggested in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1829620/comments/10 )
I am not sure how to get you more debug info, as this setup has been
working before, and it's a very eary boot-process bug, so I can't even
access dmesg etc.
EDIT:
Hypothesis:
Only affects ASUS with i7-8565U Whiskey Lake Intel CPU
Upstream Bug Report:
https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/1
WORKAROUND 1: disable intel microcode updates during boot
From this bug:
https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1759920
1/ add the boot parameter: dis_ucode_ldr to /etc/default/grub
2/ update-grub
WORKAROUND 2: downgrade (and hold) intel-microcode to older version from
bionic/main
apt install --reinstall intel-microcode=3.20180312.0~ubuntu18.04.1
WORKAROUND 3: upgrade BIOS
Asus has released updated BIOSes, which probably include the newest
microcode. After upgrading workarounds 1,2 are not needed.
Please NOTE, unlike workarounds 1,2, BIOS upgrade is permanent and cannot be
(easily) reverted.
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: KDE
DistroRelease: KDE neon 18.04
InstallationDate: Installed on 2012-12-23 (2337 days ago)
InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Release amd64
(20121017.1)
Package: linux-hwe-edge (not installed)
Tags: bionic wayland-session
Uname: Linux 5.0.0-17.1-liquorix-amd64 x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm libvirtd lpadmin netdev plugdev sudo vboxusers video
_MarkForUpload: True
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: KDE
DistroRelease: KDE neon 18.04
InstallationDate: Installed on 2012-12-23 (2339 days ago)
InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Release amd64
(20121017.1)
Package: linux-hwe-edge
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 5.0.0-15.16~18.04.1-generic 5.0.6
Tags: third-party-packages bionic wayland-session
Uname: Linux 5.0.0-15-generic x86_64
UnreportableReason: Toto není oficiální KDE balík. Prosíme odstraňte všechny
balíky třetích stran a zkuste to znovu.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm libvirtd lpadmin netdev plugdev sudo video
_MarkForUpload: True
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