Touchpad on X1 Carbon G6 (LEN0091) is slow and sloppy

[Daniel van Vugt]

Touchpad on X1 Carbon G6 is slow and sloppy

Because:
[ 2.101906] psmouse serio1: synaptics: Your touchpad (PNP: LEN0091 PNP0f13) says it can support a different bus. If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to <email address hidden>.

Adding kernel parameter psmouse.synaptics_intertouch=1 indeed fixes it.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-24-generic 5.3.0-24.26
ProcVersionSignature: Ubuntu 5.3.0-24.26-generic 5.3.10
Uname: Linux 5.3.0-24-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Date: Wed Dec 18 14:09:51 2019
InstallationDate: Installed on 2019-12-18 (0 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: LENOVO 20KGS4XY00
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-24-generic root=UUID=204dc145-c221-45e3-99f4-45107dc1b8d9 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.3.0-24-generic N/A
 linux-backports-modules-5.3.0-24-generic N/A
 linux-firmware 1.183.2
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/16/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: N23ET68W (1.43 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20KGS4XY00
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN23ET68W(1.43):bd10/16/2019:svnLENOVO:pn20KGS4XY00:pvrThinkPadX1Carbon6th:rvnLENOVO:rn20KGS4XY00:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Carbon 6th
dmi.product.name: 20KGS4XY00
dmi.product.sku: LENOVO_MT_20KG_BU_Think_FM_ThinkPad X1 Carbon 6th
dmi.product.version: ThinkPad X1 Carbon 6th
dmi.sys.vendor: LENOVO

[Daniel van Vugt (vanvugt)]

Here's the upstream fix:

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.4.4&id=2a8e38a8b9b7fcce4b0b0bc7ca4f2d74cc7c1529

Mine is a LEN0091 but we should make sure we also have the fix for LEN0092.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Daniel van Vugt (vanvugt)]

Found the fix in focal-proposed linux_5.4.0-9.12.diff.gz

[Daniel van Vugt (vanvugt)]

linux (5.4.0-9.12) focal; urgency=medium
...
    - Input: synaptics - switch another X1 Carbon 6 to RMI/SMbus