The cause of the freeze seems to be a BIOS problem, as Alan suggested on the linux-usb mailing list. When booting in UEFI mode (from a Xubuntu 15.04 installation medium), three of the devices listed by lspci are missing, compared to legacy BIOS mode. One of those is the device that caused the freezes. Looks like some of the hardware is unused, and Acer just hides it from the OS. But only in UEFI mode.
I'll try a re-installation of Xubuntu in UEFI mode. ** Attachment added: "output of lspci when booting in UEFI mode (insecure)" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1485057/+attachment/4474853/+files/lspci-uefi.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1485057 Title: "lsusb -v" as root freezes the kernel on Acer ES1-111; also freeze on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1485057/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
