I had similar issues with the 7640U on Win11. Specifically, I had 4 freezes. A few points:
- All freezes were on battery power.
- Two were preceded by some stuttering.
- Before updating to BIOS v3.03, the (two) freezes wouldn’t lead to a BSOD, at least before my patience ran out. After updating, I had two in one day, but they led to a BSOD within seconds (also DPC_WATCHDOG_VIOLATION), the PC rebooted, and I was able to get debug information. WinDbg traced it back to the GPU driver (amdkmdag).
- Since updating to the AMD GPU drivers (just using the auto-detect tool), I haven’t had any issues (5 days now). However, the laptop was plugged in during most of this.
- My dual boot Arch setup has been very stable (i.e., no hiccups at all so far). I’m using GPU acceleration in media playback as well as a terminal, and I’ve done a little gaming on Windows after the driver update. So, stable across a variety of GPU loads.
Given all that, I’m pretty sure it was (and possibly still is) a driver issue. My hunch is some kind of GPU driver power saving feature bugging out. I also sent a support ticket last week. Suppose we’ll know more soon.