I'm affected by this too. I have a Dell Inspiron 5480 with an i7-8565U CPU.
The problem happens after the first batch of updates on a fresh install of Ubuntu Budgie 18.04.2 or Mint 19.1.
Thankfully, adding dis_ucode_ldr works, but finding this workaround on the web was not easy!
I'm affected by this too. I have a Dell Inspiron 5480 with an i7-8565U CPU.
The problem happens after the first batch of updates on a fresh install of Ubuntu Budgie 18.04.2 or Mint 19.1.
Thankfully, adding dis_ucode_ldr works, but finding this workaround on the web was not easy!