graphics stop working after second suspend (5.14)

Brief summary of the problem:

the first suspend wakes from sleep on its own and produces errors in dmesg
after that on suspend the computer stays in sleep but the monitor doesn't turn back on when exiting suspend. a different set of errors are in dmesg. the computer does enter/exit sleep and is still accessible via ssh when on.

s3 and s0xi don't show up in /sys/power/mem_sleep, (only s2idle). my understanding is that one of those should be supported.

i don't know if it's related but the computer seems to reboot instead of shutdown when trying to shutdown (but pressing the power button in systemd boot does shut down)

Hardware description:

• CPU: Ryzen 5600G
• GPU: integrated
• System Memory: 16GBx2 G skill F4-3200C16D-32GVK (xmp not enabled)
• Display(s): UPERFECT (https://amazon.com/gp/product/B07K8JLR4C/)
• Type of Diplay Connection: HDMI
• Motherboard: Gigabyte A520I AC

System information:

• Distro name and Version: arch
• Kernel version: 5.14rc7
• Custom kernel: https://aur.archlinux.org/packages/linux-mainline/
• AMD package version: not sure how to find this, i see [drm] Initialized amdgpu 3.42.0 20150101 for 0000:08:00.0 on minor 0 in dmesg

How to reproduce the issue:

run systemctl suspend twice

Attached files:

• Dmesg log dmesg_log_4.txt