[Bug 1873807] Re: USB fails on RPi 4 20.04 daily build image focal-preinstalled-server-arm64+raspi.img

[Dave Jones]

While this was fixed in the -1008 kernel, it turns out the device-tree
(which was also required to fix the issue) was being pulled by pi-gadget
from an out of date package (specifically linux-modules-*-raspi2 rather
than linux-modules-*-raspi due to the rename of the kernel flavour).

This meant that images that were *upgraded* to the -1008 kernel
displayed the corrected behaviour (because the dtbs were copied from the
kernel), but freshly created images still displayed the broken behaviour
(because their dtbs came from the out of date package). Hence my
(incorrect) assertion in LP: #1872897 comment 4 that the dailies should
be fixed (I'd only tested the fixed kernel by upgrading an existing card
to it).

This has now been rectified in the pi-gadget repo, and the daily images
rebuilt.

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Title:
  USB fails on RPi 4 20.04 daily build image focal-preinstalled-server-
  arm64+raspi.img

Status in linux-raspi package in Ubuntu:
  New
Status in livecd-rootfs package in Ubuntu:
  New

Bug description:
  For the last few days the daily 20.04 pre-installed server image fails
  to boot correctly on a Raspberry Pi4 with 4G of memory. The image is
  called: focal-preinstalled-server-arm64+raspi.img.

  The image available over the last weekend (18/19 April) failed to
  boot, and today's image boots but USB devices do not work (on both
  USB2 and USB3 ports).

  Please refer to bug #1872897 comment #4 which says that USB issues
  should have been fixed, but I'm not sure that they have.

  Here the output from lsusb -v -t on today's image:

  ~# lsusb -v -t
  /:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
      ID 1d6b:0003 Linux Foundation 3.0 root hub
  /:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
      ID 1d6b:0002 Linux Foundation 2.0 root hub

  Here is the output from the latest 20.04 beta release (ubuntu-20.04
  -beta-preinstalled-server-arm64+raspi.img) after it has been upgraded
  (with apt full-upgrade) to today's packages:

  ~# lsusb -v -t
  /:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
      ID 1d6b:0003 Linux Foundation 3.0 root hub
      |__ Port 2: Dev 2, If 0, Class=Mass Storage, Driver=uas, 5000M
          ID 2109:0715 VIA Labs, Inc.
  /:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
      ID 1d6b:0002 Linux Foundation 2.0 root hub
      |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
          ID 2109:3431 VIA Labs, Inc. Hub
          |__ Port 4: Dev 3, If 0, Class=Hub, Driver=hub/4p, 480M
              ID 05e3:0610 Genesys Logic, Inc. 4-port hub
              |__ Port 1: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
                  ID 04d9:0006 Holtek Semiconductor, Inc.
              |__ Port 1: Dev 4, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
                  ID 04d9:0006 Holtek Semiconductor, Inc.

  Early on in the boot process the following appears in syslog:

  usb usb1-port1: couldn't allocate usb_device

  Maybe the arm64 kernel's USB issue has crept back in? Thanks.

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