jaylo123 Posted December 27, 2018 Share Posted December 27, 2018 (edited) Hello, I'm seeing a ton of errors around IOMMU, VFIO and my onboard Intel GPU. I don't necessarily want to disable it in case I need console access to my Unraid server. The errors are around PTE read errors: Dec 26 20:48:43 unraid kernel: DMAR: [DMA Read] Request device [00:02.0] fault addr 6fae4000 [fault reason 06] PTE Read access is not set Dec 26 20:48:43 unraid kernel: DMAR: DRHD: handling fault status reg 2 Dec 26 20:48:43 unraid kernel: DMAR: [DMA Read] Request device [00:02.0] fault addr 6fae5000 [fault reason 06] PTE Read access is not set Dec 26 20:48:43 unraid kernel: DMAR: [DMA Read] Request device [00:02.0] fault addr 6fae5000 [fault reason 06] PTE Read access is not set Dec 26 20:48:43 unraid kernel: DMAR: [DMA Read] Request device [00:02.0] fault addr 6fae5000 [fault reason 06] PTE Read access is not set Dec 26 20:48:43 unraid kernel: DMAR: [DMA Read] Request device [00:02.0] fault addr 6fae5000 [fault reason 06] PTE Read access is not set Dec 26 20:48:43 unraid kernel: DMAR: DRHD: handling fault status reg 2 Dec 26 20:48:48 unraid kernel: dmar_fault: 5102159 callbacks suppressed Rinse, repeat. Now, the "correct" fix is to disable the onboard GPU in my BIOS. However, I would lose all console access from the local system if I do this, as my actual GPU is an Nvidia GRID M60, and it's working just fine. So I need the GPU to work during POST, but after the OS takes over I couldn't care less if it is functional. So instead, I would like to just blacklist the 00:02.0 device entirely from loading at boot time. What can I pass along on the kernel line in syslinux.cfg that will just disable this device from loading into an IOMMU group / VFIO group / just shut it the heck down? Edited December 27, 2018 by Jason Harris Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.