Ubuntu
linux package

  1. Bug #1827884
  2. Comment #54

Comment 54 for bug 1827884

Revision history for this message
Tyler Hicks (tyhicks) wrote : Re: Boot problems after upgrade to kernel 4.15.0-48 (18.04.2LTS/i386)

Hello - The 'mitigations=off' option is not the best workaround as it disables all CPU mitigations.

Since this bug is about 4.15.0-48.51 and i386 installations, the bug is most likely caused by the addition of Page Table Isolation (PTI) for i386. It landed in the aforementioned kernel release.

To be selective and only disable PTI, please use the 'nopti' boot option rather than 'mitigations=off'.

In the meantime, we'll start working to figure out the cause of this problem. Thanks for the bug report.