[Bug 263239] [psm] failed to detect touchpad on a Lenovo ThinkBook 15 G3 ACL

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 12 Apr 2022 13:45:33 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263239

            Bug ID: 263239
           Summary: [psm] failed to detect touchpad on a Lenovo ThinkBook
                    15 G3 ACL
           Product: Base System
           Version: 13.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: nbe@renzel.net

Created attachment 233164
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=233164&action=edit
dmesg output...

Hi,

I have a Lenovo ThinkBook 15 G3 ACL and unfortunately the kernel fails to
detect its touchpad. The only psm-related kernel message is:
----------------------------------------------------------------
psm0: unable to allocate IRQ
----------------------------------------------------------------

On another laptop I get the same "unable to allocate IRQ" kernel message but
then it switches to "psmcpnp" for its touchpad:
----------------------------------------------------------------
psm0: unable to allocate IRQ
psmcpnp0: <PS/2 mouse port> irq 12 on acpi0
psm0: current command byte:0065
psm: status 00 02 64
psm: status 00 00 64
psm: status 00 03 64
psm: status 00 03 64
psm: data 08 00 00
psm: status 02 47 18
psm: status 01 e2 a1
psm: status f0 01 23
psm: status 2a 80 2c
psm: status 84 03 00
psm: status 12 e8 00
psm: status b1 40 91
psm: status 27 af 25
psm: status 30 b5 40
psm: status 00 02 64
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
WARNING: Device "psm" is Giant locked and may be deleted before FreeBSD 14.0.
psm0: model Synaptics Touchpad, device ID 3-00, 4 buttons
psm0: config:00004000, flags:00000008, packet size:6
psm0: syncmask:c0, syncbits:00
----------------------------------------------------------------

I've attached the verbose dmesg log to this report.

Any ideas how to get the Lenovo touchpad working?



Thanks in advance and kind regards,
Nils

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