Hi,

On 2021-09-12 09:04:26 +0200 Riccardo Mottola via Dng <dng@???> wrote:

> I swear there was a touchpad, now it is totally gone ! I am puzzled.

I found out at least why this happens. The EFI BIOS has a setting for "USB Legacy mode" for the pointing device. If I enable it, the touchpad disappears, if I enable it shows.
However, neither enabled nor disabled the touchpad works!
I would assume that in compatibilty mode maybe it shoudl somehow work as a simple mouse?

With compatibility mode, this is reported by xinput:

$ xinput
⎡ Virtual core pointer                        id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                  id=4    [slave  pointer  (2)]
⎜   ↳ Logitech USB Optical Mouse                  id=10    [slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad                  id=13    [slave  pointer  (2)]
⎣ Virtual core keyboard                       id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard                 id=5    [slave  keyboard (3)]
    ↳ Power Button                                id=6    [slave  keyboard (3)]
    ↳ Fujitsu FUJ02E3                             id=7    [slave  keyboard (3)]
    ↳ Video Bus                                   id=8    [slave  keyboard (3)]
    ↳ Power Button                                id=9    [slave  keyboard (3)]
    ↳ FJ Camera: FJ Camera                        id=11    [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard                id=12    [slave  keyboard (3)]
    ↳ BRLTTY 6.3 Linux Screen Driver Keyboard     id=14    [slave  keyboard (3)]

And Steve's script does:
sh touchtoggle.sh
diagnostic devid =13
diagnostic scratchline=Device Enabled (175): 1
diagnostic proptext =Device Enabled#
diagnostic propid =175
Current state of 1 has been changed to 0.

and it always says 1->0 even if you rerun it.

More ideas?

Riccardo