Public bug reported:
When I connect a 16 port USB3 hub to one of the USB3 ports on the Pi4
(4GB or 8GB ram model), and then plug in external powered hard drives
into the hub, when I reach the sixth or seventh or maximum 8th drive, OS
complains xHCI max limit of 32 has been reached. I have a keyboard, no
mouse, I'm not sure why it's already 32 USB devices.
I was hoping I could connect 2 such 16port usb hubs to the 2 usb3 ports
on the Pi4, and connect 32 externally powered hard drives to the Pi4.
** Affects: linux-raspi (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1928710
Title:
ubuntu server 20.04 LTS for ARM64 on Raspberry Pi4 could not handle
more than 32 USB3 devices
Status in linux-raspi package in Ubuntu:
New
Bug description:
When I connect a 16 port USB3 hub to one of the USB3 ports on the Pi4
(4GB or 8GB ram model), and then plug in external powered hard drives
into the hub, when I reach the sixth or seventh or maximum 8th drive,
OS complains xHCI max limit of 32 has been reached. I have a
keyboard, no mouse, I'm not sure why it's already 32 USB devices.
I was hoping I could connect 2 such 16port usb hubs to the 2 usb3
ports on the Pi4, and connect 32 externally powered hard drives to the
Pi4.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1928710/+subscriptions
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