Hi,

On 11/05/2014 04:47 PM, Benjamin Tissoires wrote:

Hi Maximilien,

[Adding Hans in CC, I am pretty sure he might be helpful]

I can certainly try (to be helpful) looking at the dmesg, and the ubuntu
bug I see:

1) ps2 aux port getting properly detected, so this is not a case i8042.noloop
may fix

2) not working with older kernels either so likely not a problem with the
recent nomux dance

3) [    0.834549] pnp 00:06: Plug and Play ACPI device, IDs ETD0a00 ETD0000 PNP0f13 (active)

Looks like you've a ps/2 attached elantech touchpad.

But I don't see any ps/2 mouse / touchpad probing messages in your dmesg
despite the kernel seeing the aux port:

[    1.865847] serio: i8042 AUX port at 0x60,0x64 irq 12

Which is weird, can you try booting with i8042.debug=1 on the kernel commandline,
and then collect a new dmesg ?

Thanks & Regards,

Hans