Comment 614 for bug 1734147

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On Tue 1 May 2018, 4:01 PM Louis Bourque <<email address hidden> wrote:

> Hello dear skilled members,
>
> I would also call upon you to know if the «installation» of LibreBoot
> that rewrites an open-sourced BIOS can be an alternative way to the fix
> described in the Bug Description; that is, to correct the corrupted
> function found the (proprietary) original BIOS ? If so, could you say
> in which condition, or express reserves ?
>
> Please see :
> https://libreboot.org/
>
> Thanks again for your attention, much kindly.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1734147
>
> Title:
> corrupted BIOS due to Intel SPI bug in kernel
>
> Status in Linux:
> Unknown
> Status in linux package in Ubuntu:
> Fix Released
> Status in linux-hwe-edge source package in Xenial:
> Fix Released
> Status in linux-oem source package in Xenial:
> Fix Released
> Status in linux source package in Artful:
> Fix Released
>
> Bug description:
> An update to linux kernel on Ubuntu 17.10 that enabled the Intel SPI
> drivers results in a serial flash that is read only in Intel Broadwell
> and Haswell machines with serial flashes with SPI_NOR_HAS_LOCK set.
>
> Symptoms:
> * BIOS settings cannot be saved
> * USB Boot impossible
> * EFI entries read-only.
>
> ---
>
> Fix: The issue was fixed in kernel version 4.13.0-21 by configuring
> the kernel so it is not compiled with Intel SPI support. But previous
> affected machines still suffered from a broken BIOS.
>
> Repair: If you still can boot into Ubuntu, you can recover your BIOS
> with the following steps:
>
> 1. Boot into Ubuntu
> 2. Download
> http://people.canonical.com/~ypwong/lp1734147/linux-image-4.15.0-041500rc6-generic_4.15.0-041500rc6.201712312330+20170103+1_amd64.deb
> 3. Install the downloaded package:
> $ sudo dpkg -i
> linux-image-4.15.0-041500rc6-generic_4.15.0-041500rc6.201712312330+20170103+1_amd64.deb
> 4. Make sure the kernel is installed without any error. Once installed,
> reboot.
> 5. At grub, choose the newly installed kernel. You can choose the
> "recovery" mode.
> 6. Reboot and go to BIOS settings to confirm your BIOS has been
> recovered.
> 7. In case your BIOS is not recovered, reboot to the new kernel, then
> reboot *once again* to the new kernel, do not enter BIOS settings before
> the reboot. After the second reboot, check BIOS.
> 8. If your BIOS issue remains, download another kernel from
> http://people.canonical.com/~ypwong/lp1734147/linux-image-4.15.0-041500rc6-generic_4.15.0-041500rc6.201712312330+clear+debug_amd64.deb,
> and use dpkg to install it, then repeat steps 4 to 6.
>
> After your BIOS is fixed, the kernel packages you just installed are
> no longer needed, you can remove it by running 'sudo dpkg -r linux-
> image-4.15.0-041500rc6-generic'.
>
> The patch used to build the linux v4.15 kernel in step 8 can be found
> at https://goo.gl/xUKJFR.
>
> ---
>
> Test Case: Fix has been verified by our HWE team on affected hardware.
>
> Regression Potential: Minimal, it's unlikely anyone is actually doing
> anything which requires this driver.
>
> ---
>
> Affected Machines:
>
> Lenovo B40-70
> Lenovo B50-70
> Lenovo B50-80
> Lenovo Flex-3
> Lenovo Flex-10
> Lenovo G40-30
> Lenovo G50-30
> Lenovo G50-70
> Lenovo G50-80
> Lenovo S20-30
> Lenovo U31-70
> Lenovo Y50-70
> Lenovo Y70-70
> Lenovo Yoga Thinkpad (20C0)
> Lenovo Yoga 2 11" - 20332
> Lenovo Yoga 3 11"
> Lenovo Z50-70
> Lenovo Z51-70
> Lenovo ideapad 100-15IBY
>
> Acer Aspire E5-771G
> Acer Aspire ES1-111M-C1LE (fixed following your new instruction (thank
> you))
> Acer TravelMate B113
> Acer Swift SF314-52 (Fixed by 4.14.9)
> Toshiba Satellite S55T-B5233
> Toshiba Satellite L50-B-1R7
> Toshiba Satellite S50-B-13G
> Toshiba Satellite L70-A-13M
> Dell Inspiron 15-3531
> Mediacom Smartbook 14 Ultra M-SB14UC (fixed with official fix)
> Acer Aspire E3-111-C0UM
> HP 14-r012la
>
> ---
>
> Affected serial flash devices by manufacturer part number, JEDEC ID
> (SPI_NOR_HAS_LOCK set in drivers/mtd/spi-nor/spi-nor.c)
> /* ESMT */
> f25l32pa, 0x8c2016
> f25l32qa, 0x8c4116
> f25l64qa, 0x8c4117
> /* GigaDevice */
> gd25q16, 0xc84015
> gd25q32, 0xc84016
> gd25lq32, 0xc86016
> gd25q64, 0xc84017
> gd25lq64c, 0xc86017
> gd25q128, 0xc84018
> gd25q256, 0xc84019
> /* Winbond */
> w25q16dw, 0xef6015
> w25q32dw, 0xef6016
> w25q64dw, 0xef6017
> w25q128fw, 0xef6018
>
> ---
>
> Original Description:
>
> Basically on Lenovo Y50-70 after installing Ubuntu 17.10, many users
> reported a corrupted BIOS.
>
> It's not possible to save new settings in BIOS anymore and after
> rebooting, the system starts with the old settings.
>
> Moreover (and most important) USB booting is not possible anymore
> since USB is not recognized. It's very serious, since our machines do
> not have a CDROM.
>
> Lenovo forums at the moment are full of topics regading this issue.
>
> Thank you!!
>
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>