> >> On a Dell XPS 13 9310, Linux 5.9.1 from Debian Sid/unstable displays the > >> message below. > >> > >> [ 2.218614] psmouse serio1: synaptics: Your touchpad (PNP: DLL0991 > 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@xxxxxxxxxxxxxxx. > >> > >> I am going to ask the user for a test of > >> `psmouse.synaptics_intertouch=1`, so the ID can be added to the force > >> list, but until know no Dell DLLXXXX ids show up there. > > > > I happen to have one of these on my desk and on 5.10-rc1 I don't see this > behavior: > > > > $ sudo dmesg | grep DLL0945 > > [ 1.244165] i2c_hid i2c-DLL0945:00: supply vdd not found, using dummy > regulator > > [ 1.244201] i2c_hid i2c-DLL0945:00: supply vddl not found, using dummy > regulator > > [ 1.404053] input: DLL0945:00 06CB:CDE6 Mouse as > /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-2/i2c- > DLL0945:00/0018:06CB:CDE6.0001/input/input6 > > [ 1.404134] input: DLL0945:00 06CB:CDE6 Touchpad as > /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-2/i2c- > DLL0945:00/0018:06CB:CDE6.0001/input/input7 > > [ 1.404196] hid-generic 0018:06CB:CDE6.0001: input,hidraw0: I2C HID v1.00 > Mouse [DLL0945:00 06CB:CDE6] on i2c-DLL094 > > :00 > > [ 42.971148] input: DLL0945:00 06CB:CDE6 Mouse as > /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-2/i2c- > DLL0945:00/0018:06CB:CDE6.0001/input/input12 > > [ 42.972073] input: DLL0945:00 06CB:CDE6 Touchpad as > /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-2/i2c- > DLL0945:00/0018:06CB:CDE6.0001/input/input13 > > [ 42.972182] hid-multitouch 0018:06CB:CDE6.0001: input,hidraw0: I2C HID > v1.00 Mouse [DLL0945:00 06CB:CDE6] on i2c-DLL0945:00 > > > > Can you please make sure that pinctrl_tigerlake is loaded? > > Debian’s Linux configuration does not build the driver. > > # CONFIG_PINCTRL_TIGERLAKE is not set > > I reported bug *linux: Select PINCTRL_TIGERLAKE to support current > hardware* to Debian bug tracking system [1]. > Glad you got to the bottom of that. As a thought to generally improve things for such new hardware, would you consider diffing the configs between Ubuntu and Debian? I wonder if there is anything else missing.