hi All, I have a machine and there's only intel gpu. the secureboot and vt-d is enabled in BIOS. On the Ubuntu desktop, I do s2idle first and restart the machine. The machine can't restart successfully, so I need to press the power button to shutdown. I tried each of the following and the issue can't be triggered. 1. disable secure boot in BIOS. 2. intel_iommu=off. 3. intel_iomm=igfx_off. 4. nomodeset 5. i915.modeset=0.
After I investigate further, find inte_iommu keeps checking the status of DMA_GSTS_TES. During the procedure of restart, the driver would disable iommu translation and check status of DMA_GSTS_TES until status of DMA_GSTS_TES is 0. If you need more information, I can provide it. Thanks *Koba Ko*
_______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu