@mruffell I tried to boot your custom kernel, but could not because of an invalid signature. Seems to be because of secure boot, but I don't know how to workaround this.
-- 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/1956849 Title: Almost all USB ports suddenly stopped working; unbootable Status in linux package in Ubuntu: Incomplete Bug description: This package needs to be pulled NOW. It disables almost all USB-3.0 and USB-C ports completely. Even though I had automatic software updates turned OFF (or so I thought), my Mac Pro suddenly got a new kernel when I rebooted it this morning: Linux macpro-obs 5.11.0-44-generic #48~20.04.2-Ubuntu SMP Tue Dec 14 15:36:44 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux and it contains a P0 showstopper bug. Upon rebooting, I got dropped into the initrd prompt because Linux could not see the external USB drive that I'm booting from (WDBAGF5000AGY-WESN). I wasted an entire day figuring out what was wrong, and even went so far as to order a replacement SSD, planning to rebuild everything from scratch, because the drive failed to appear in every single USB port I tried. Then I discovered that a different SSD didn't work, either. At that point, I realized that something else was wrong, and I kept trying until I found one other port that worked. I was then able to boot and get dmesg and lsusb output. This kernel update broke not only the built-in ports, but also the ports on a generic USB-C PCIe card (Amazon B08PF8XR73). Mac Pro built-in USB-3.0(A) ports (2x): working Mac Pro built-in USB-C ports (4x): dead USB-C PCIe card USB-C ports (2x): dead USB-C PCIe card USB-3.0(A) ports (5x): dead All devices fail to appear in lsusb when attached to the port, including an Apple USB keyboard, an Anker USB-C Ethernet adapter, a WD SSD, and a Sandisk SSD. I'm going to roll back my kernel to a working kernel, but this package needs to be pulled NOW before it affects too many people. This is too catastrophic a bug to wait even a day. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1956849/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
