Last month, several users reported broken BIOSes due to a bug in the Ubuntu 17.10 installation images. Laptops from Lenovo, Acer, and Toshiba were affected by the issue, which locked users out of their BIOS settings. The bug could make user’s system unbootable even if the image was booted in live mode. Canonical immediately took action and disabled downloads for the Ubuntu 17.10 Desktop images from the ubuntu.com website. Meanwhile, to fix the issue, they had to update the kernel packages in Ubuntu 17.10 to disable the intel-spi driver at boot time, and they’ve been working on rebuilding the ISOs since.