Control: reassign -1 src:linux Hi,
On 08-10-2021 13:06, Lorenzo Iannuzzi wrote: > - Were there any problems with the system after upgrading? > USB 3.0 ports stop working at boot or as soon as I plug more than one device. > Devices attached to them are not recognized and not listed with lsusb. I had > no > problems before the upgrade. > On logs I found: > kernel: DMAR: DRHD: handling fault status reg 2 > kernel: DMAR: [DMA Read] Request device [04:00.0] PASID ffffffff fault add > r fff7e000 [fault reason 06] PTE Read access is not set > kernel: xhci_hcd 0000:04:00.0: WARNING: Host System Error > > I can avoid this issue adding "iommu=soft" to kernel parameters at boot. The signs of this issue hint towards the kernel, hence reassigning there. Paul
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