Seems like everything gets locked, including the kernel.
I tried connecting through SSH but it isn't answering.


debug1: Connecting to ariel-nt [ariel-nt] port 22.
debug1: connect to address ariel-nt port 22: No route to host
ssh: connect to host ariel-nt port 22: No route to host


I also tried pinging it, when it freezes it also stops answering.


# Before booting
>From _ icmp_seq=30 Destination Host Unreachable
>From _ icmp_seq=31 Destination Host Unreachable
>From _ icmp_seq=32 Destination Host Unreachable
>From _ icmp_seq=33 Destination Host Unreachable
>From _ icmp_seq=34 Destination Host Unreachable
>From _ icmp_seq=35 Destination Host Unreachable
>From _ icmp_seq=36 Destination Host Unreachable
>From _ icmp_seq=37 Destination Host Unreachable
>From _ icmp_seq=38 Destination Host Unreachable
>From _ icmp_seq=39 Destination Host Unreachable
# Connected to the internet
64 bytes from ariel-nt: icmp_seq=40 ttl=64 time=2512 ms
64 bytes from ariel-nt: icmp_seq=41 ttl=64 time=1490 ms
64 bytes from ariel-nt: icmp_seq=42 ttl=64 time=467 ms
64 bytes from ariel-nt: icmp_seq=43 ttl=64 time=33.6 ms
64 bytes from ariel-nt: icmp_seq=44 ttl=64 time=39.4 ms
64 bytes from ariel-nt: icmp_seq=45 ttl=64 time=6.22 ms
64 bytes from ariel-nt: icmp_seq=46 ttl=64 time=7.62 ms
64 bytes from ariel-nt: icmp_seq=47 ttl=64 time=6.84 ms
64 bytes from ariel-nt: icmp_seq=48 ttl=64 time=3.22 ms
# Froze
>From _ icmp_seq=97 Destination Host Unreachable
>From _ icmp_seq=98 Destination Host Unreachable
>From _ icmp_seq=99 Destination Host Unreachable
>From _ icmp_seq=100 Destination Host Unreachable
>From _ icmp_seq=101 Destination Host Unreachable
>From _ icmp_seq=102 Destination Host Unreachable
>From _ icmp_seq=103 Destination Host Unreachable
>From _ icmp_seq=107 Destination Host Unreachable
>From _ icmp_seq=108 Destination Host Unreachable

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1917194

Title:
  [Dell G5 5590] lspci freezes computer on Ubuntu 20.04

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  After upgrading from Ubuntu 18.04 to 20.04 my computer started to
  freeze when running lspci.

  I ended up noticing that it happened when trying to query device
  '1f:00.0' a USB port. After some kernel and bios updates the problem
  got worse. Now the computer freezes ~5 seconds after booting up.

  I tried:
  1) Running in recovery mode, also freezes
  2) Running an older kernel version (5.4.0-66-generic), also freezes
  3) Removing nvidia drivers (just in case), also freezes
  4) Running all combinations nodemodeset, acpi=off an nouveau blacklisting
  5) Updating all drivers

  The computer freezes for ever, I can't switch TTYs, move the mouse,
  anything, the only way to leave was to force shutdown. On the last
  cases after switching to a tty I could see this messages before the
  freeze ocurred:

  kernel: xhci_hcd 0000:1f:00.0: PCI post-resume error -19!
  kernel: xhci_hcd 0000:1f:00.0: HC died; cleaning up

  Running Ubuntu 20.04 from a USB sticks works fine, as well as doing a fresh 
install.
  All logs were obtained by chrooting to the faulty partition from a fresh 
install, if there are any more logs that would be helpful, let me know.

To manage notifications about this bug go to:
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