Hard lock with External GPU on sleep/wake cycle

Brief summary of the problem:

My current device is a Lenovo Legion Go with an external GPU (egpu) connected over USB 4. My external GPU is a Onexgpu (7600M XT).

My Legion Go hard locks when I have the egpu connected on a sleep/wake cycle. When my Legion Go hard locks, it refuses to turn on and a hard reset via holding the power button and turning it on is required. This is intermittent/flaky as I am sometimes able to succesfully do a full sleep/wake cycle.

Hardware description:

• CPU: AMD Z1 Extreme
• GPU:

67:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 33 [Radeon RX 7600/7600 XT/7600M XT/7600S/7700S / PRO W7600] [1002:7480] (rev c7)
c2:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Phoenix1 [1002:15bf] (rev 04)

• System Memory: 32GB
• Display(s): Built-in Display
• Type of Display Connection: Built-in Display

System information:

• Distro name and Version: Bazzite (Fedora Kinoite)
• Kernel version: Linux kishor-legion 6.11.2-201.fsync.fc40.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Oct 9 21:38:54 UTC 2024 x86_64 GNU/Linux
• Custom kernel :N/A
• AMD official driver version: N/A

How to reproduce the issue:

When I put my Legion Go to sleep, I have the following hardware setup:

• the device is succesfully put to sleep with the egpu connected
  • the device goes to sleep and the power LED blinks/fades white indicating that's asleep
  • the device screen is black
  • the Onexgpu fans turn off

When I attempt to wake the device up:

• the device fails to turn on
  • the built-in screen turns on and thens turns off (flashes)
  • the built-in screen remains turned off (no backlight)
  • the fans ramp up and remain on
  • power LED continues to flash/blink white (indicating that it still asleep)
• egpu lights turn on
• egpu fans turn on

Attached files:

Screenshots/video files

Video: 6aW1Vbx

Log files (for system lockups / game freezes / crashes)

I am unable to grab logs for when the device hard locks. After a hard reset, the previous boot logs are empty, even if I do journalctl -b 1 -k.

However, I have the following logs are for successful sleep/wake cycles with the egpu connect: egpu_numerous_success.log