Panel remains black screen after resume from S3 under DGPU mode in ubuntu 20.10

[generix]

Jan 29 08:32:25 CORSAIR-ONE kernel: nvidia-modeset: ERROR: GPU:0: Display engine push buffer channel allocation failed: 0x65 (Call timed out [NV_ERR_TIMEOUT])
Jan 29 08:32:25 CORSAIR-ONE kernel: nvidia-modeset: ERROR: GPU:0: Failed to allocate display engine core DMA push buffer

[Regression in 460.27.04,460.32.03,460.39,...] Black screen: nvidia-modeset: ERROR: GPU:0: Failed to allocate display engine core DMA push buffer

The last working driver with my card is 455.45.01. All more recent driver versions break with a black screen after loading of nvidia-modeset: First, the screen goes black, then the backlight is toggled several times (about 10 times), finally it stays blank and dark. Logs show: [ 0.088017] Kernel command line: root=UUID=32278c21-b19c-47e0-8466-420bbb5a1642 ro rd.dm=0 nvidia-drm.modeset=1 net.ifnames=0 pcie_aspm=force initrd=boot\initramfs-5.9.11-gentoo.img ... [ 3.143143] nvidia-nvlink: Nv…

Did this also start with the 460 driver version in your case?