From: Monsieur@notreal.invalid   
      
   Paul wrote:   
   > ### Direct answer   
   >   
   > The most likely root cause is **a marginal USB link on port `1-8.1` of your   
   external hub** -   
   > either a failing device, a bad cable, or more commonly in your setup,   
   >   
   >     **insufficient/unstable power on the 10‑port USB hub**   
      
      
   >   
   > - causing repeated USB enumeration timeouts and address‑set failures. The   
   messages appear late   
   > because the problematic device/port only starts failing or getting   
   re‑enumerated some time   
   > after boot (due to hotplug, movement, or power fluctuation), so the kernel   
   logs these errors   
   > when that happens, not at startup.   
   >   
   > ********** End CoPilot Answer **********   
   >   
   > You would check the hub box for an external barrel power input.   
   > There is a limit to how much power the wall adapters provide for this   
   > purpose, and 5V @ 3A or 5V @ 4A might be as generous as they   
   > will drive through the barrel plug. When they make a product   
   > and include the adapter in the box, usually there is not enough   
   > power to give each and every port 950mA (on a USB3 hub). Once   
   > you start hanging 2.5" HDD (like a Passport) off the hub, there   
   > just isn't enough power for everything else. Spinup can draw 1 ampere   
   > on a Passport 2.5" HDD. The power draw drops as the Passport settles   
   > to idle power and remains spinning. If you were to run several Passports   
   > off the hub, eventually the wall adapter would shut down on overload.   
      
      
   I bought this 32€ hub especially for this mini-pc so that it doesn't   
   have to provide too much power to my peripheral devices. The hub is a   
   rather heavy metal brick and has a power adapter of 65W which should be   
   sufficient – or so I was told, I don't know much about electric stuff.   
      
   I have now attached a simple 4-port hub that I had lying around with no   
   external power adapter. With this the error messages went away. Booting   
   is still slow however. There are some usb-sticks connected to the ports,   
   and an external 8TB hard drive. Each port has its own on/off button.   
      
   The biggest annoyance I experience with these hubs (both the 4-port and   
   the 10-port) is that Mint doesn't see the drive until I activate more   
   than one port on the hub OR if I wait about 20 minutes. I know this   
   sounds strange, but if I activate only the port with the hard drive the   
   light goes on, the drive spins up and then... nothing. Then after about   
   15-20 minutes (really!) Mint suddenly sees the drive and opens Nemo to   
   show the contents. I can avoid this by activating the other buttons too,   
   then Mint sees the drive immediately.   
      
   All in all it's not a big problem, just a bit of an annoyance. I've been   
   thinking about switching back to a desktop, don't know yet.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)