# Lenovo ThinkPad X1 Carbon

Related articles

- Lenovo ThinkPad X1 Carbon (Gen 2)
- Lenovo ThinkPad X1 Carbon (Gen 3)
- Lenovo ThinkPad X1 Carbon (Gen 4)

Lenovo ThinkPad X1 Carbon (X1C). There is also a touch version. Comes without optical drive. Has UEFI BIOS with BIOS-legacy fallback mode.

Tip: A great resource for thinkpads is http://www.thinkwiki.org/wiki/ThinkWiki

## Booting

### Legacy-BIOS

This procedure is far less involved than UEFI and works perfectly.

Boot into your BIOS and change the boot mode to Legacy. Then simply follow the normal installation guide.

### UEFI

The factual accuracy of this article or section is disputed.

Reason: Making a custom ISO may not be necessary. Try the regular installation ISO first (Discuss in Talk:Lenovo ThinkPad X1 Carbon#UEFI support)

This article or section is a candidate for merging with GRUB#UEFI systems.

Notes: unnecessary duplication (Discuss in Talk:Lenovo ThinkPad X1 Carbon#)

Use archboot to install or see https://bbs.archlinux.org/viewtopic.php?pid=1288500#p1288500

1. You follow the guide from here and skip the part about errors and refind: Create_UEFI_bootable_USB_from_ISO

2. Make sure you USB is mounted to /boot/efi and install grub, like so:

    $ grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=arch_grub --boot-directory=/boot/efi/ --recheck --debug

OBS: You can remove the entry from your EFI bootmanger, with efibootmgr by issuing:

    $ efibootmgr -b XX -B

3. Now you can choose if you wanna hack you grub.cfg or use the custom config in grub.d. Either way generate the grub.cfg:

    $ grub-mkconfig -o /boot/efi/grub/grub.cfg

4. Make certain appropriate changes have been made to grub.cfg. My working example, which could use cleaning:

    /etc/grub.d/10_linux

    ### BEGIN /etc/grub.d/10_linux ###
    menuentry 'Arch Linux test'  {
    	load_video
    	set gfxpayload=keep
    	insmod gzio
    	insmod part_gpt
    	insmod ext2
    	set root='hd0,gpt1'
    	if [ x$feature_platform_search_hint = xy ]; then
    	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1  B35D-FE34
    	else
    	  search --no-floppy --fs-uuid --set=root B35D-FE34
    	fi
    	echo	'Loading Linux core repo kernel ...'
    	linux	/arch/boot/x86_64/vmlinuz root=UUID=B35D-FE34 ro  archisobasedir=arch archisolabel=ARCH_201306
    	echo	'Loading initial ramdisk ...'
    	initrd	/arch/boot/x86_64/archiso.img
    }

    ### END /etc/grub.d/10_linux ###

5. Move the grub.efi to overwrite the archiso supplied one (which btw works on my desktop. I guess GRUB includes more workarounds for buggy firmware from manufactureres. See this video, if you have time: http://mjg59.dreamwidth.org/10014.html

    $ mv /boot/efi/EFI/arch_grub/grubx64.efi /mnt/efi/EFI/boot/bootx64.efi

Success. Somethings are implied, like GPT partitiontable etc.

### Hanging on "HWP enabled" message

This is due to a bug introduced in Linux 4.4. To work around it, add `intel_pstate=no_hwp` to your kernel parameters.

## Hardware

Almost everything works out of the box.

### Audio

Sound works out of the box.

#### Xbindkeys

For alternative window managers (Fluxbox, etc..), try installing xbindkeys and adding the following to ~/.xbindkeysrc

    "amixer -c 0 set Master 1dB-"
      XF86AudioLowerVolume
    "amixer -c 0 set Master 1dB+"
      XF86AudioRaiseVolume

### Network

Wired networking works out of the box with the Ethernet to USB adapter. Wireless works out of the box using the `iwlwifi` module.

    $ lspci

    output: Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 96)

### Touchscreen

Works out of the box. To enable multi-touch, install Touchegg.

### Video

The video card installed is Intel HD Graphics 4000. See intel for more info.

#### Brightness control

Default brightness adjustment keys work but need to be pressed multiple times to increase/decrease the screen brightness. Writing your own ACPI handlers for those buttons seems to have no effect. In order to use them properly you need to add the kernel parameter `acpi_osi="!Windows 2012"`. See also Backlight#ACPI.

Some desktop environments may lack granularity while changing brightness. This is due to the DE (e.g. gnome-settings-daemon) along with the internal graphics module changing the brightness when brightness adjustment keys are pressed causing multiple steps per press. To work around this one can add the following to their boot parameters:

    video.brightness_switch_enabled=0

##### Xbindkeys

For alternative window managers (Fluxbox, etc..), try installing xbindkeys and adding the following to ~/.xbindkeysrc

    "xbacklight -dec 5"
      XF86MonBrightnessDown
    "xbacklight -inc 5"
      XF86MonBrightnessUp

#### Wrong EDID for external display

With certain connectors (e.g. MiniDP to VGA), there is a bug getting EDID for the external screen while booting:

    [ 93.736330] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up

This does not occur if the external screen is connected after booting.

The correct mode can be added per xrandr#Adding undetected resolutions:

    xrandr --newmode 1920x1200_60 154 1920 1968 2000 2080 1200 1203 1209 1235 -hsync +vsync
    xrandr --addmode DP1 1920x1200_60
    xrandr --output DP1 --mode 1920x1200_60

### KMS

Enable KMS using the `i915` module and by enabling VT in BIOS.

### Webcam

Works out of the box. Tested with guvcview

### Fingerprint Reader

Works out of the box with Fprint.

For a GUI fingerprint-guiAUR from the AUR is already patched to work with the X1's newer fingerprint reader. To get the gui's dropdown to recognize your device, you will have to add your user to the `plugdev` group:

    $ gpasswd -a <username> plugdev

See fingerprint-gui for more information about config

`lsusb` output: 147e:2020 Upek TouchChip Fingerprint Coprocessor (WBF advanced mode)

### WWAN (Mobile broadband)

This model includes a Ericsson H5321gw adapter that can be used as a mobile broadband adapter and GPS.

The SIM-card must be inserted in the back of the laptop.

Add text to the following file and reboot

    /etc/modprobe.d/avoid-mbib.conf

    options cdc_ncm prefer_mbim=N

Tested OK with NetworkManager with modemmanager installed

`lsusb` output: 0bdb:1926 Ericsson Business Mobile Networks BV

### GPS

Install gpsd from extra and mbm-gpsd-git from AUR. Add this to the following file

    /etc/udev/rules.d/99-mbm.rules

    ATTRS{idVendor}=="0bdb", ATTRS{idProduct}=="1926", ENV{ID_USB_INTERFACE_NUM}=="09", ENV{MBM_CAPABILITY}="gps_nmea"
    ATTRS{idVendor}=="0bdb", ATTRS{idProduct}=="1926", ENV{ID_USB_INTERFACE_NUM}=="03", ENV{MBM_CAPABILITY}="gps_ctrl"

Reboot to reload udev rules.

Run `sudo mbm-gpsd`

See if there is GPS-output `cat /dev/gps0`

Run `sudo gpsd -b -N /dev/gps0`

To test it `xgps`

Or use e.g. foxtrotgpsAUR in AUR.

See this link for more info.

`lsusb` output: 0bdb:1926 Ericsson Business Mobile Networks BV

### Keyboard backlight

Works out of the box. Use FN+Space

### Bluetooth

First try to set up Bluetooth normally. If you get kernel error messages:

    kernel: bluetooth hci0: Direct firmware load for brcm/BCM20702A1-0a5c-21e6.hcd failed with error -2
    kernel: Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-0a5c-21e6.hcd not found

You need to manually install the proprietary firmware. The slackware wiki describes one way to do this: http://www.slackwiki.com/Btfirmware-nonfree.

### Mouse/Touchpad

Works out of the box. See TrackPoint for details.

### Docking

This model has no docking port.

Video for USB 3 Docking Stations currently is not supported, so you must use a USB Port Replicator with Digital Video (USB 2.0)

This supports:

- USB-devices connected to dock
- Audio
- Microphone
- Ethernet
- Video (see DisplayLink)

Category:

- Lenovo

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