DMAR ERROR on HP Proliant MicroServer Gen8

[Zippi]

Hi everyone,
I know the topic has already been covered several times and I've already read everything in the other posts.....but.....

I updated ProxMox to version 7.4-3 then Kernel 5.15.102-1

In the console of my HP ProLiant MicroServer Gen 8 I always have these errors that I already had even with lower kernels like 5.15.85-1, 5.15.83-1, 5.15.74-1,5.15.30-2,etc

In the grub I have:

GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on intremap=off"
GRUB_CMDLINE_LINUX=""

I state that even if I put intel_iommu=off I have fewer errors but I always have a DMA ERROR
Is there just no option I can use to clear these errors on this server?
Thanks for your patience to whoever will help me!

Zippi

 

[leesteken]

Try adding iommu=pt, maybe the identity mapping for (non-passthrough) devices prevents those errors. If you have integrated graphics, then maybe intel_iommu=on,igfx_off helps by excluding the integrated graphics from the IOMMU.

 

[Zippi]

Thank you for the quick reply.....

Now i have:

GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on,igfx_off iommu=pt intremap=off"
GRUB_CMDLINE_LINUX=""

but nothing has changed.....same errors