Skip to content

Boot hangs early unless using "iommu=off"

Description:

My PC hangs when booting from linux-6.9.7.arch1-1. The console displays:

Booting `Arch Linux' Loading Linux linux ... Loading initial ramdisk ...

Then goes no further.

Booting with "iommu=off" or "amd_iommu=off" works as expected.

Additional info:

This affects the following kernels:

linux-6.9.7.arch1-1 linux-6.9.6.arch1-1 linux-6.9.5.arch1-1 linux-6.9.4.arch1-1 linux-6.9.3.arch1-1 linux-6.9.2.arch1-1 linux-6.9.1.arch1-2 linux-6.9.1.arch1-1

linux-6.8.9.arch1-2 and earlier are unaffected.

Also see https://bbs.archlinux.org/viewtopic.php?id=297469

Steps to reproduce:

  1. Boot PC using one of the affected kernels above
  2. Watch in dismay
Edited by Rob Newcater
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information