Proposed Linux Patch For A Brief Delay To Match PCI Spec Will Hopefully Address Some Bugs
Going back to February there was a bug report around the xHCI controller dieing on resume from s2idle when using an AMD Ryzen AI Max+ "Strix Halo" Framework Desktop. In turn all USB devices behind the xHCI controller are lost on resume, but unbinding and binding the driver can restore the functionality without a reboot. After months of back and forth communication, it looks like a solution has been figured out and comes down to a nuance of the PCI spec with needing a brief wait...
This patch is the culmination of months of debugging spurred by a specific hardware configuration (Ryzen AI Max+ 'Strix Halo' on Framework Desktop) and the increasing complexity of modern hardware interactions.
It highlights the ongoing effort to refine the foundational software layers (Linux kernel) that underpin all computing, particularly as new high-performance hardware components are introduced.
A specific, albeit niche, hardware bug related to USB functionality on resume from s2idle for certain AMD platforms is being addressed, improving system stability for affected users.
- · AMD
- · Framework (company)
- · Linux users
- · None
Improved stability and user experience for a subset of Linux users with specific AMD hardware.
Reduced support burden for system integrators and hardware manufacturers dealing with intermittent resume issues.
Enhanced confidence in the Linux kernel's ability to adapt to complex new hardware architectures and specifications.
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Read at Phoronix