Ubuntu
linux package

  1. Bug #2071471
  2. Comment #3

Comment 3 for bug 2071471

Revision history for this message
Frank Heimes (fheimes) wrote :

Btw. I just checked the jammy kernel config options and jammy/22.04 had and still has strict=yes:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.4 LTS
Release: 22.04
Codename: jammy
$ uname -a
Linux maasrrc1 5.15.0-112-generic #122-Ubuntu SMP Thu May 23 08:10:47 UTC 2024 s390x s390x s390x GNU/Linux
ubuntu@maasrrc1:~$ grep CONFIG_IOMMU_DEFAULT_DMA_STRICT /boot/config-5.15.0-112-generic
CONFIG_IOMMU_DEFAULT_DMA_STRICT=y
$ grep CONFIG_IOMMU_DEFAULT_DMA_STRICT /boot/config-5.15.0-112-generic
I also checked older jammy kernels and strict was always yes.

So this has obviously never changed from jammy to noble!

Have you modified/tweaked the setting manually on your side before testing on jammy?!