Discontinued; fixed by Lenovo in new firmware release
Lenovo released a new firmware 1.30 which is available on LVFS and also available via Lenovo Support Site
After flashing you will need to enable it under Setup → Config → Power then select Linux.
But don't forget to reverse this scripts effects and manual changes in your bootloader config before rebooting.
# remove the patch
rm /boot/acpi_override
# on ubuntu / debian based system
rm /etc/initramfs-tools/hooks/acpi_override.sh
BIOS Update
Via LVFS
Many modern distros automatically install the updates from LVFS but you can check manually via:
If you have a device with firmware supported by fwupd, this is how you will check for updates and apply them using fwupd's command line tools.
# fwupdmgr get-devices
This will display all devices detected by fwupd.
# fwupdmgr refresh
This will download the latest metadata from LVFS.
# fwupdmgr get-updates
If updates are available for any devices on the system, they'll be displayed.
# fwupdmgr update
This will download and apply all updates for your system.
Updates that can be applied live will be done immediately.
Updates that run at bootup will be staged for the next reboot.
Manual
You can manually check your BIOS version like this:
sudo dmidecode | grep "BIOS Revision:"
To update your BIOS via USB drive use geteltorito.
curl -O https://download.lenovo.com/pccbbs/mobiles/n23ur11w.iso
geteltorito -o x1c2018-130.img n23ur11w.iso
sudo dd if=x1c2018-130.img of=/dev/sdX bs=512K
(OUTDATED) Suspend for the "Thinkpad X1 Carbon (6th Gen)" on Linux
Unfortunately the ThinkPad X1 Carbon (6th Gen) aka (X1C6 and X1 Carbon 2018) does not support suspend on Linux. There's an ongoing discussion in the Lenovo Support Forums. With some help from the Arch Linux Community, I was able to create an ACPI override for the DSDT. This enables full support of S3 suspend on Linux.
Prerequisites
Debian/Ubuntu based distro with initramfs-tools based initramfs generation for fully automated setup apart from the BIOS related things.
For other distros there are some further steps needed. (PRs welcome)
(Optional) BIOS version
The current BIOS version for the X1C6 is 1.25
. You can download the update ISO from
the Lenovo Support Site.
BIOS update
If you wanna update via USB drive use geteltorito.
geteltorito -o x1c2018-125.img n23ur08w.iso
sudo dd if=x1c2018-125.img of=/dev/sdX bs=512K
Reboot from USB and follow instructions.
BIOS settings
- Set
Thunderbolt BIOS Assist Mode
toEnabled
(viaConfig
→Thunderbolt 3
). - (Unconfirmed): Disable
Secure Boot
.
If you see all three lines in dmesg | grep -A3 'DSDT ACPI'
[ 0.000000] ACPI: DSDT ACPI table found in initrd [kernel/firmware/acpi/dsdt.aml][0x2338b]
[ 0.000000] Lockdown: ACPI table override is restricted; see man kernel_lockdown.7
[ 0.000000] ACPI: kernel is locked down, ignoring table override
rather than just the first line, disable Secure Boot
Tools
Make sure that you have iasl
(via acpica) and cpio
(via cpio) installed.
Installed automatically on distros with apt such as Debian/Ubuntu
Generating the override
curl -O https://raw.githubusercontent.com/fiji-flo/x1carbon2018s3/master/generate_and_apply_patch.sh
chmod +x generate_and_apply_patch.sh
./generate_and_apply_patch.sh
Loading the override on boot
Edit your boot loader configuration and add /acpi_override
to the initrd
line.
To ensure S3
is used as sleep default add mem_sleep_default=deep
to you kernel parameters.
If you're using systemd-boot your
/boot/loader/entries/arch.conf
might look like this:
title Arch Linux ACPI
linux /vmlinuz-linux
initrd /intel-ucode.img
initrd /acpi_override
initrd /initramfs-linux.img
options root=/dev/nvme0n1p2 rw i915.enable_guc=3 mem_sleep_default=deep
Other boot loaders
If you made it work with other boot loaders please help out (PRs are most welcome).
Some notes
/acpi_override
must be specified before/initramfs…
.- When using a single partiion try using
/boot/acpi_override
instead ofacpi_override
. Use the same prefix (if any) used by the existing/prefix/initramfs-linux.img
parameter.
Verify that it's working
After rebooting check the output of:
dmesg | grep -i "acpi: (supports"
should look like this:
[ 0.230796] ACPI: (supports S0 S3 S4 S5)
See also
Esonn did an initial blog post about my patch with some more detailed explanation.