So, after setting up Ubuntu,

I still have the problem that start-up takes a long time (purple screen). I ran systemd-analyze critical-chain. Nothing too long here, I disabled some networking service previously. Still takes a long time. So I use dmesg and scroll all the way up and this pops up:

device descriptor read/64, error -110

Here is also a picture of the dmesg output: :-(

Which takes a very long time. Apparentely there is a power supply problem according to some threads. I have a lot of micrcontrollers and arduinos connected (partly to a 4 USB HUB by Anker). This was never an issue on windows and all connected usb devices work without problem. Does anyone have an idea how to solve this?

UPDATE: I unplugged everything, waited 3 minutes and then rebooted (with partically connected USB devices like mouse/keyboard). It booted a lot faster. I hope it stays like that..


  • Make sure your Anker hub has its power supply plugged in and working. Otherwise, you've got a USB device causing the problem.
    – heynnema
    Apr 15, 2020 at 15:33
  • Its just a USB hub, it does not have an extra power supply. To be fair, windows complained about some usb problem too, but it is not slowed down by it... Anyway I just unplugged the three arduinos which were connected, theyre power supplied externally now. maybe three of them draw too much power,
    – Spacefish
    Apr 15, 2020 at 20:12
  • Yes, you need to get a powered USB hub.
    – heynnema
    Apr 15, 2020 at 20:30


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