Boot from nvme - no hdmi, from sd card - o.k.

When I boot any variant with kernel 6..x.x from SD there is no problem with hdmi.

When I flash the same variant to the nvme, it boots fine but there is no hdmi output.

The orange pi logo appears for a second, then nothing. I can ssh in and everthing works fine.

Any variant with 5.x.x kernel works fine from the nvme, with hdmi output.

What I don't understand is that if I have output to hdmi when booting from sd, why not from nvme.

What I think is relevent entries in the boot log is below.

mmu fe043e00.iommu: Enable stall request timed out, status: 0x00030b
Jan 30 09:38:22 orangepi3b kernel: rk_iommu fe043e00.iommu: Enable stall request timed out, status: 0x00001d
Jan 30 09:38:22 orangepi3b kernel: rk_iommu fe043e00.iommu: Page fault at 0x00000000ee086d40 of type read
Jan 30 09:38:22 orangepi3b kernel: rk_iommu fe043e00.iommu: iova = 0x00000000ee086d40: dte_index: 0x3b8 pte_index: 0x86>
Jan 30 09:38:22 orangepi3b kernel: rk_iommu fe043e00.iommu: mmu_dte_addr: 0x00000001f4ffa000 dte@0x00000001f4ffaee0: 0x>
Jan 30 09:38:22 orangepi3b kernel: rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
Jan 30 09:38:22 orangepi3b kernel: rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
Jan 30 09:38:22 orangepi3b kernel: rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
Jan 30 09:38:22 orangepi3b kernel: rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
Jan 30 09:38:22 orangepi3b kernel: rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at 

Thanks