I saw a livestream of someone testing CachyOS for the first time and their usb devices kept getting shut down or put to sleep after some idle time. After troubleshooting they found that it was something grub was doing.
Is it a bug, or just Grub’s default behavior?
Grub just boots.
I wonder what could have been the actual problem. The VoD no longer exists.
Power saving via shutting down USB devices is definitely a thing and you can pass in kernel parameters via grub to disable it (or any number of other ways). I guess you could maybe enable it with a cmdline too but I’m skeptical that that’s what’s happening here. more likely the person just brute-force overrode whatever was happening by changing their kernel cmdline.
Here’s more on USB autosuspend.
Sounds like maybe you just might be confusing their applied workaround for the cause.
As in they may have used grub to apply something like a kernel parameter but that does not mean it as grub causing the issue.