The hunt for a kernel bug, part 5

The hunt for a kernel bug, part 5

Armed with the information from my previous research on a possible kernel bug, I opened a bug report on the Ubuntu bug tracker:

It wasn’t long until my bug got confirmed. Someone else chimed in that they had also experienced USB issues. In their case it were external drive devices. Definitely a showstopper!

As of this date, there is a beta for Ubuntu 22.04, and my hope is that this version will either include a new enough kernel (5.16 or up), or that Ubuntu developers have manually cherry-picked the commit that fixes the issue. Let’s check with the Ubuntu Kernel Team:

Ubuntu Kernel Team

Oops… based on upstream 5.15… that’s not good. Maybe they cherry-picked upstream commits? I checked and the kernel is currently at The changelog doesn’t mention anything about xhci or usb. I guess I still have to wait a bit longer…

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