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

What kernel version are you using precisely?

On 11.05.21 19:42, Derek Dolney wrote:

Hi, Yussuf,

Thanks for your help. I finally noticed today that it does not work.
Sometimes suspends and resumes but sometimes chokes. Any advice about
that or can you point me in the right direction to find some fix? I get
these messages in my syslog:

kernel: i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
kernel: rmi4_f01 rmi4-00.fn01: Failed to write sleep mode: -16.
kernel: rmi4_f01 rmi4-00.fn01: Suspend failed with code -16.
kernel: rmi4_physical rmi4-00: Failed to suspend functions: -16
kernel: rmi4_smbus 7-002c: Failed to suspend device: -16
kernel: PM: dpm_run_callback(): 0xffffffffc06a0050 returns -16
kernel: PM: Device 7-002c failed to suspend: error -16
kernel: PM: Some devices failed to suspend, or early wake event
detected
kernel: i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
kernel: rmi4_physical rmi4-00: rmi_driver_set_irq_bits: Failed to
change enabled interrupts!
kernel: psmouse: probe of serio2 failed with error -1

On Wed, 2021-05-05 at 23:32 +0200, Yussuf Khalil wrote:

quoted

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:

quoted

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