Re: Apple Thunderbolt Display chaining

[Mika Westerberg]

On Fri, Aug 05, 2022 at 08:43:08PM +0800, Brad Campbell wrote:
> > Well can you try so that you disable PCIe PM for starters? Pass
> > "pcie_port_pm=off" in the command line and see if anything changes. Of
> > course this prevents low power states.
> > 
> 
> That allows me to modprobe thunderbolt from an xterm :

Okay does it work any better if you don't have anything attached to the
TBT ports when you boot up? If it does, how about just adding a single
device (no display connected)?