I've just flicked ASPM (Active State Power Management - runtime power 
saving on PCIe hardware) on by default, and it'll be that way in the 
next rawhide kernel build. There's the potential for some buggy hardware 
to be upset by this. If your system no longer boots or some hardware 
doesn't work, try booting with the

pcie_aspm=off

argument. If that fixes things please file a bug against the kernel and 
assign it to me (m...@redhat.com). Include dmesg and the output of lspci 
-n. There's some reasonable heuristics in the kernel to detect supported 
hardware, so I'm hoping that people shouldn't see any adverse affects.

-- 
Matthew Garrett | mj...@srcf.ucam.org

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