Please skip confirmation from me. I currently don't have a test
environment available to test the -proposed kernel.
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https://bugs.launchpad.net/bugs/1968210
Title:
USB devi
Good to know. Thanks for the information. I guess I should subscribe to
that other bug then. Would it be an option to mark this one a duplicate
of the new one?
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htt
Sorry, I can't help with that.
All machines on which I have seen the issue so far are production machines
under configuration control where I cannot install an experimental kernel.
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The log I attached in comment #15 is from a cold boot, but I'm seeing all four
combinations of outcomes:
cold boot -> failing
cold boot -> working
warm boot -> failing
warm boot -> working
on ~40 Focal servers with identical hardware.
(Except for a different RAID controller in three of them which
a-schmidt@ulanbator:/var/log$ lspci -nn | grep USB
00:14.0 USB controller [0c03]: Intel Corporation C620 Series Chipset Family USB
3.0 xHCI Controller [8086:a1af] (rev 09)
Output of dmesg is attached.
At kernel timestamp 2.544086 you can see the telltale "couldn't allocate
usb_device" message.
S
Broken again on Ubuntu 20.04LTS after updating to kernel 5.4.0-105-generic.
USB2 devices not detected on USB3 ports after reboot, but appearing after:
$ echo ':00:14.0' | sudo tee /sys/bus/pci/drivers/xhci_hcd/unbind
$ sleep 1
$ echo ':00:14.0' | sudo tee /sys/bus/pci/drivers/xhci_hcd
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