1. GRUB_CMDLINE_LINUX_DEFAULT="mds=off"
Same hang.
2. GRUB_CMDLINE_LINUX_DEFAULT="mitigations=off"
Same hang.
2. GRUB_CMDLINE_LINUX_DEFAULT="dis_ucode_ldr"
Seems to be fine. Done multiple reboots, cold boots, but never hang.
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https://bugs.launchpad.net/bugs/1829402
Title:
Purple screen hangup during boot
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