Ubuntu
linux-hwe package

  1. Bug #1829620
  2. Comment #37

Comment 37 for bug 1829620

Revision history for this message
Mark (markthecodehamster) wrote : Re: intel-microcode on ASUS makes kernel stuck during loading initramfs on bionic-updates, bionic-security

PS,
#dmesg | grep microcode
#
returns nothing on the ubuntu hwe-edge kernel with mitigations=off (=problematic ucode otherwise loaded)

Actually, is the microcode loaded at all?

# cat /sys/devices/system/cpu/cpu0/microcode/version
cat: /sys/devices/system/cpu/cpu0/microcode/version: No such file or directory

# uname -a
Linux mmm-U2442 5.0.0-15-generic #16~18.04.1-Ubuntu SMP Tue May 7 14:17:37 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
root@mmm-U2442:~# dmesg |grep -i microcode

# apt list --installed |grep microcode
amd64-microcode/bionic-updates,now 3.20180524.1~ubuntu0.18.04.2 amd64 [installed,automatic]
intel-microcode/bionic-security,bionic-updates,now 3.20190514.0ubuntu0.18.04.2 amd64 [installed,automatic]

# cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-5.0.0-15-generic root=UUID=XXX ro rootflags=subvol=@ubuntu ro kaslr resume=/dev/mapper/swapDevice mem_sleep_default=deep dm_mod.use_blk_mq=1 acpi_osi=Linux acpi_backlight=vendor dis_ucode_ldr mitigations=off