Arch Linux

tono12

Member

Registered: 2025-08-19

Posts: 2

linux-16.16.0 and newer breaks touchpad functionality (Lenovo Laptop)

After updating to 16.16.0 or 16.16.1 the touchpad of my laptop stops working. Everything else seems to be working without issues.
Downgradig to linux-6.15.9 fix the issue.

My Laptop is a Lenovo Thinkbook 16 G6 and touchpad uses i2c.

'dmesg | grep i2c' for working kernel (linux-6.15.9):

[    2.829871] i2c i2c-14: Successfully instantiated SPD at 0x50
[    2.962665] i2c_designware i2c_designware.0: [Firmware Bug]: DSDT uses known not-working I2C bus speed 400000, forcing it to 100000
[    3.145026] input: ELAN06FA:00 04F3:327E Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-15/i2c-ELAN06FA:00/0018:04F3:327E.0001/input/input9
[    3.145209] input: ELAN06FA:00 04F3:327E Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-15/i2c-ELAN06FA:00/0018:04F3:327E.0001/input/input11
[    3.145290] hid-generic 0018:04F3:327E.0001: input,hidraw0: I2C HID v1.00 Mouse [ELAN06FA:00 04F3:327E] on i2c-ELAN06FA:00
[    3.216517] input: ELAN06FA:00 04F3:327E Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-15/i2c-ELAN06FA:00/0018:04F3:327E.0001/input/input12
[    3.216597] input: ELAN06FA:00 04F3:327E Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-15/i2c-ELAN06FA:00/0018:04F3:327E.0001/input/input14
[    3.216626] hid-multitouch 0018:04F3:327E.0001: input,hidraw0: I2C HID v1.00 Mouse [ELAN06FA:00 04F3:327E] on i2c-ELAN06FA:00

'dmesg | grep i2c' for non working kernel (linux-6.16.1):

[    2.736395] i2c i2c-14: Successfully instantiated SPD at 0x50

'dmesg -l err' for working kernel (linux-6.15.9):

[    0.209443] ACPI BIOS Error (bug): Failure creating named object [\_TZ.CVF0], AE_ALREADY_EXISTS (20240827/dswload2-326)
[    0.209458] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20240827/psobject-220)
[    0.209470] ACPI BIOS Error (bug): Failure creating named object [\_TZ.FN00], AE_ALREADY_EXISTS (20240827/dswload2-326)
[    0.209474] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20240827/psobject-220)
[    0.209478] ACPI BIOS Error (bug): Failure creating named object [\_TZ.FAN0], AE_ALREADY_EXISTS (20240827/dswload2-326)
[    0.209482] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20240827/psobject-220)
[    2.875819] ACPI BIOS Error (bug): Could not resolve symbol [^^RP28.PXSX.WIST], AE_NOT_FOUND (20240827/psargs-332)
[    2.876430] ACPI Error: Aborting method \_SB.PC00.CNVW.IFUN due to previous error (AE_NOT_FOUND) (20240827/psparse-529)
[    2.877478] ACPI Error: Aborting method \_SB.PC00.CNVW._DSM due to previous error (AE_NOT_FOUND) (20240827/psparse-529)

'dmesg -l err' for non working kernel (linux-6.16.1):

[    0.205844] ACPI BIOS Error (bug): Failure creating named object [\_TZ.CVF0], AE_ALREADY_EXISTS (20250404/dswload2-326)
[    0.205859] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20250404/psobject-220)
[    0.205871] ACPI BIOS Error (bug): Failure creating named object [\_TZ.FN00], AE_ALREADY_EXISTS (20250404/dswload2-326)
[    0.205875] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20250404/psobject-220)
[    0.205880] ACPI BIOS Error (bug): Failure creating named object [\_TZ.FAN0], AE_ALREADY_EXISTS (20250404/dswload2-326)
[    0.205883] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20250404/psobject-220)
[    0.225248] ACPI: EC: [Firmware Bug]: Ignoring ECDT due to invalid ID string "_SB.PC00.LPCB.EC0"
[    0.227673] ACPI Error: No handler for Region [RAM_] ((____ptrval____)) [EmbeddedControl] (20250404/evregion-131)
[    0.227679] ACPI Error: Region EmbeddedControl (ID=3) has no handler (20250404/exfldio-261)
[    0.227683] ACPI Error: Aborting method \_SB.PC00.LPCB.EC0.ECWK due to previous error (AE_NOT_EXIST) (20250404/psparse-529)
[    0.227688] ACPI Error: Aborting method \_SB.PC00.LPCB.EC0._INI due to previous error (AE_NOT_EXIST) (20250404/psparse-529)
[    0.227693] ACPI Error: AE_NOT_EXIST, during \_SB.PC00.LPCB.EC0._INI execution (20250404/nsinit-657)
[    0.229590] ACPI Error: No handler for Region [RAM_] ((____ptrval____)) [EmbeddedControl] (20250404/evregion-131)
[    0.229594] ACPI Error: Region EmbeddedControl (ID=3) has no handler (20250404/exfldio-261)
[    0.229598] ACPI Error: Aborting method \_SB.PC00.I2C0.TPD0._INI due to previous error (AE_NOT_EXIST) (20250404/psparse-529)
[    0.229603] ACPI Error: AE_NOT_EXIST, during \_SB.PC00.I2C0.TPD0._INI execution (20250404/nsinit-657)
[    2.768737] ACPI BIOS Error (bug): Could not resolve symbol [^^RP28.PXSX.WIST], AE_NOT_FOUND (20250404/psargs-332)
[    2.769302] ACPI Error: Aborting method \_SB.PC00.CNVW.IFUN due to previous error (AE_NOT_FOUND) (20250404/psparse-529)
[    2.769993] ACPI Error: Aborting method \_SB.PC00.CNVW._DSM due to previous error (AE_NOT_FOUND) (20250404/psparse-529)

Full dmesg for working kernel (linux-6.15.9): https://pastebin.com/4UJdseZb
Full dmesg for non working kernel (linux-6.16.1): https://pastebin.com/aXikprQf

Any help or ideas about how to fix it or to better debug it are welcomed

brand77

Member

Registered: 2025-08-20

Posts: 3

Re: linux-16.16.0 and newer breaks touchpad functionality (Lenovo Laptop)

I have the same problem with kernel 6.16.1 on a ThinkBook 14 G7 IML.

Also my touchpad does not work any more but everything else works properly.

brand77

Member

Registered: 2025-08-20

Posts: 3

Re: linux-16.16.0 and newer breaks touchpad functionality (Lenovo Laptop)

With kernel 6.16.2 it seems to be resolved.

linux_study___

Member

Registered: 2025-08-22

Posts: 1

Re: linux-16.16.0 and newer breaks touchpad functionality (Lenovo Laptop)

With kernel 6.16.2 it seems to be resolved.

really?I can't find the change about the thinkbook touchpad in the change log.

brand77

Member

Registered: 2025-08-20

Posts: 3

Re: linux-16.16.0 and newer breaks touchpad functionality (Lenovo Laptop)

really?I can't find the change about the thinkbook touchpad in the change log.

Me neither, but there are some ACPI-related patches.

Anyway, with 6.16.2 I no longer get the error and the touchpad works.

tono12

Member

Registered: 2025-08-19

Posts: 2

Re: linux-16.16.0 and newer breaks touchpad functionality (Lenovo Laptop)

For me 6.12.2 also fixes the issue.

EJSnow

Member

From: /home/ejsnow

Registered: 2025-04-06

Posts: 15

Website

Re: linux-16.16.0 and newer breaks touchpad functionality (Lenovo Laptop)

I had the same issue on a Lenovo Ideapad Flex 5 15IIL05, I temporarily downgraded to Linux 6.15.8 but seems like that wasn't necessary (lol) as 6.16.2 does fix the issue and the touchpad works flawlessly now.

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I hate the rabbit hole I have fallen down but the sunk-cost fallacy, pacman, and the AUR prevent me from picking up and moving to Fedora or something.