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Ubuntu 17.10 Temporarily Pulled Due To A BIOS Corrupting Problem (phoronix.com)

Posted by msmash on from the call-IT dept.

An anonymous reader writes: Canonical has temporarily pulled the download links for Ubuntu 17.10 "Artful Aardvark" from the Ubuntu website due to ongoing reports of some laptops finding their BIOS corrupted after installing this latest Ubuntu release. The issue is appearing most frequently with Lenovo laptops but there are also reports of issues with other laptop vendors as well. This issue appears to stem from the Intel SPI driver in the 17.10's Linux 4.13 kernel corrupting the BIOS for a select number of laptop motherboards. Canonical is aware of this issue and is planning to disable the Intel SPI drivers in their kernel builds. Canonical's hardware enablement team has already verified this works around the problem, but doesn't provide any benefit if your BIOS is already corrupted.

2 of 167 comments (clear)

  1. Re:which is to blame Linux or Lenovo? by omnichad · · Score: 5, Informative

    From the Canonical bug report:
    At least on Lenovo Thinkpad Yoga, the BIOS seems to monitor the SPI-NOR
    write protection bit and if it is flipped to read/write it assumes the
    BIOS configuration was changed on next reboot. It then, for unknown
    reasons, resets the BIOS settings back to default.

  2. Re:which is to blame Linux or Lenovo? by Hal_Porter · · Score: 5, Interesting

    Lenovo need to stop people writing the Bios because otherwise they'd able to remove the crapware Lenovo put in the Bios to stop people removing the crapware they put in the Windows by installing a fresh Windows image.

    With an unmodified Lenovo Bios the crapware will be re-installed via Windows Platform Binary Table

    https://www.howtogeek.com/2263...

    Beginning with Windows 8, a PC manufacturer can embed a program - a Windows .exe file, essentially - in the PC's UEFI firmware. This is stored in the "Windows Platform Binary Table" (WPBT) section of the UEFI firmware. Whenever Windows boots, it looks at the UEFI firmware for this program, copies it from the firmware to the operating system drive, and runs it. Windows itself provides no way to stop this from happening. If the manufacturer's UEFI firmware offers it up, Windows will run it without question.

    Were it not for this Bios resetting feature - a ludicrously determined user could do the following

    1) Remove Windows
    2) Use some other OS to dump the Bios out
    3) Hack said dump to mess up the Windows Platform Binary Table and reflash it
    4) Reinstall Windows from an image

    And then they'd have a copy of Windows with no Lenovo Service Engine installed! The horror! Instead it seems like Lenovo have had the Bios reset itself to stop step 3), so the determined user would still have LSE installed.

    --
    echo -e 'global _start\n _start:\n mov eax, 2\n int 80h\n jmp _start' > a.asm; nasm a.asm -f elf; ld a.o -o a;