Re: Bug#946118: synaptics touchpad does not work in debian installer graphical mode
Samuel Thibault, le sam. 07 déc. 2019 22:54:09 +0100, a ecrit:
> Samuel Thibault, le mer. 04 déc. 2019 01:52:36 +0100, a ecrit:
> > Thinking of it... IIRC the touchpad is not working on my DELL XPS13
> > laptop in g-i.
> Indeed, it doesn't work.
> > What I can see of it on normal boot of installed system is:
> > [ 6.097298] input: DELL07E6:00 06CB:76AF Mouse as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-8/i2c-DELL07E6:00/0018:06CB:76AF.0002/input/input12
> > [ 6.097660] input: DELL07E6:00 06CB:76AF Touchpad as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-8/i2c-DELL07E6:00/0018:06CB:76AF.0002/input/input13
> > [ 6.098066] hid-generic 0018:06CB:76AF.0002: input,hidraw1: I2C HID v1.00 Mouse [DELL07E6:00 06CB:76AF] on i2c-DELL07E6:00
> > and lsmod | grep i2c gives
> > i2c_designware_platform 16384 0
> > i2c_designware_core 20480 1 i2c_designware_platform
> > i2c_i801 32768 0
> > i2c_hid 28672 0
> > hid 126976 4 i2c_hid,usbhid,hid_multitouch,hid_generic
> > I don't see the i2c_designware* modules in the g-i image, perhaps that
> > needs to be included for some hardware?
> I tried to rmmod i2c_designware_platform on my installed system, the
> mouse stopped working, so it seems to be required, at the very least.
> I tried to add i2c-modules to a g-i image, i2c_designware_platform
> didn't get loaded automatically, and even loading it manually didn't
> make the mouse detected.
I found that the i2c bus is behind a PCI card which is driven by the
intel_lpss_pci driver. Loading this by hand got the touchpad detected.
Xorg didn't pick it up however, only the touchscreen.