This seems to be affecting me too. Around the time the firmware package was updated (plus other kernel-related packages), I started having serious problems with USB during boot. I cannot really be sure it isn't a hardware problem, but I am able to use MacOS okay (this is an iMac).
I boot off of an external SSD. To get boot to work I have to unplug my external HDD and my USB hub, and then plug them back in after the kernel has successfully mounted the SSD. Otherwise I get USB timeouts and get dumped into an emergency prompt. Additionally, sometimes the USB mouse stops working. This has occasionally happened in the past and I've just have to reseat it in the USB hub. Now I have to remove power to the USB hub and unplug the USB hub from the machine, and then plug it all back. i.e. a hard-reset of the whole USB hub. This is with one USB hub, but I also tried another. Something is seriously broken with USB. Is there a supported way to backroll the firmware? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1956518 Title: linux-firmware 1.187.24 may crash USB ports To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1956518/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
