https://bugs.freedesktop.org/show_bug.cgi?id=107065
--- Comment #14 from dwagner jb5sgc1n.nya@20mm.eu --- (In reply to Andrey Grodzovsky from comment #13)
What ASIC are you using ? I also tested with gfx8 ASIC and haven't observed any issues with resume. Did you update the firmware for this ASIC to latest #
The GPU is an RX460 "POLARIS11 0x1002:0x67EF 0x1682:0x9460 0xCF", with the latest firmware from the kernel git, you can see the details from https://bugs.freedesktop.org/attachment.cgi?id=140383 uploaded earlier.