Us old people have the idea of peripherals as input (keyboard, mouse) or output (monitor, printer) - but they've all been input/output for two decades or more; and Thunderbolt and friends are much more like an Ethernet network (reliability of Wake on LAN, anyone?) than they are simple point-to-point connections.
Meaning - anything could be the device preventing what you expect to happen, even if it looks like it should be impossible and have nothing to do with it.
Re:A dock that wakes up reliably
by shermantanktop on Saturday July 11, 2026 @11:55PM
(#48878111)
HDMI CEC is the bane of my (home theater) existence.
Which device just woke every other device up at 4am?
Which device just shut everything down while I was in the middle of a movie?
And are they the same device?
CEC and eARC piss me off to no end - it was all working perfectly for over a year and now the receiver refuses to cooperate (or maybe it's the TV, who knows) and you have to cycle things by hand like a meanderthal.
A Raspberry Pi can help debug and fix HDMI CEC flakiness, with the right cable - https://johnlian.net/posts/hdmi-cec/
In addition, it takes some time for Apple to squash bugs after releasing new hardware or software. M5s used to be unreliable with Anker TB4 until 1-2 months ago.