Well I used git to fetch only your patch. No change. This time I did not
managed to resume. Got a correct display and working mouse but windows
were not responsive and even short push power button was ineffective
With the complete patch, it behaves the same way. I think there is still
a bug in Intel IOMMU suspend resume so maybe it is no more related to
graphic chipset.
If it serves, here is my kernel config.
-- eric