synaptics: Your touchpad (PNP: LEN2018 PNP0f13) says it can support a different bus

First of all thank you for all your hard work keeping the Linux kernel
awesome!

Running on a Lenovo Thinkpad T460p, I found these lines in my dmesg:

[   17.360279] psmouse serio1: synaptics: queried max coordinates: x
[..5676], y [..4758]
[   17.390832] psmouse serio1: synaptics: queried min coordinates: x
[1266..], y [1096..]
[   17.390853] psmouse serio1: synaptics: Your touchpad (PNP: LEN2018
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
linux-input@vger.kernel.org.

Indeed i2c-hid and hid-rmi modules are not loaded. Setting
psmouse.synaptics_intertouch=1 as directed, now I get the following and
the device works well imho:

[   80.967562] psmouse serio1: synaptics: queried max coordinates: x
[..5676], y [..4758]
[   81.004823] psmouse serio1: synaptics: queried min coordinates: x
[1266..], y [1096..]
[   81.004828] psmouse serio1: synaptics: Trying to set up SMBus access
[   81.025153] rmi4_smbus 7-002c: registering SMbus-connected sensor
[   81.079177] rmi4_f01 rmi4-00.fn01: found RMI device, manufacturer:
Synaptics, product: TM3053-006, fw id: 2010421
[   81.141785] input: Synaptics TM3053-006 as /devices/rmi4-
00/input/input22
[   81.148458] serio: RMI4 PS/2 pass-through port at rmi4-00.fn03
[   81.559841] input: PS/2 Generic Mouse as /devices/rmi4-00/rmi4-
00.fn03/serio2/input/input23

Thanks again,
Derek

Hi Derek,

have you tested whether suspending and resuming works fine? If yes, can
you send in a commit that adds the PNP ID to the list in
drivers/input/mouse/synaptics.c?

Regards
Yussuf Khalil

On 05.05.21 23:06, Derek Dolney wrote:

First of all thank you for all your hard work keeping the Linux kernel
awesome!

Running on a Lenovo Thinkpad T460p, I found these lines in my dmesg:

[   17.360279] psmouse serio1: synaptics: queried max coordinates: x
[..5676], y [..4758]
[   17.390832] psmouse serio1: synaptics: queried min coordinates: x
[1266..], y [1096..]
[   17.390853] psmouse serio1: synaptics: Your touchpad (PNP: LEN2018
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
linux-input@vger.kernel.org.

Indeed i2c-hid and hid-rmi modules are not loaded. Setting
psmouse.synaptics_intertouch=1 as directed, now I get the following and
the device works well imho:

[   80.967562] psmouse serio1: synaptics: queried max coordinates: x
[..5676], y [..4758]
[   81.004823] psmouse serio1: synaptics: queried min coordinates: x
[1266..], y [1096..]
[   81.004828] psmouse serio1: synaptics: Trying to set up SMBus access
[   81.025153] rmi4_smbus 7-002c: registering SMbus-connected sensor
[   81.079177] rmi4_f01 rmi4-00.fn01: found RMI device, manufacturer:
Synaptics, product: TM3053-006, fw id: 2010421
[   81.141785] input: Synaptics TM3053-006 as /devices/rmi4-
00/input/input22
[   81.148458] serio: RMI4 PS/2 pass-through port at rmi4-00.fn03
[   81.559841] input: PS/2 Generic Mouse as /devices/rmi4-00/rmi4-
00.fn03/serio2/input/input23

Thanks again,
Derek