ADB shows max 7 devices. PyADB shows all devices

[Plandercozeron]

If thread is alive...

Here is my case

I connect 8 devices

When i use Ubuntu 18.10
adb devices shows 7 devices
pyadb devices shows 8 devices

When i use Windows 7 x64
adb devices shows all 8 devices

As i get it right PyADB wraps ADB commands.
For sure the problem is in Ubuntu itself but results are different. Both commands should list 7 or 8 devices at once.

Where should i dig?

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[Plandercozeron]

Nevermind. Not even close to ADB or PyADB
Seems like linux bug which is connected to xhci_hcd driver
dmesg gives me:
Not enough host controller resources for new device state.
can't set config #1, error -12

Resolved this case by overriding xHCI with EHCI
Disable xHCI

lspci -nn | grep USB
| cut -d '[' -f3 | cut -d ']' -f1
| xargs -I@ setpci -H1 -d @ d0.l=0

Undo (d0.l=1):

lspci -nn | grep USB
| cut -d '[' -f3 | cut -d ']' -f1
| xargs -I@ setpci -H1 -d @ d0.l=1