Nixpkgs: Synaptics touchpad enabled even though I explicitly configured it not to be

[tvestelind]

Issue description

The Synaptics touchpad on my Thinkpad T450s is enabled even though I have explicitly disable it in configuration.nix using services.xserver.enable = false. I have even disabled it in BIOS but that didn't help either.

Steps to reproduce

Install NixOS 16.09 on a Thinkpad T450s and set services.xserver.enable = false.

Technical details

• I looked in the server.conf that X is started with but there is no InputClass for anything resembling a mouse
• xinput --list shows SynPS/2 Synaptics TouchPad id=11 and I can disable the touchpad manually using xinput disable 11
• There is some info about config/udev adding input device SynPS/2 Synaptics TouchPad in /var/log/X.0.log
• See further down for some attached files.
• System: (NixOS: nixos-version, Ubuntu/Fedora: lsb_release -a, ...)
  16.09.741.354fd37 (Flounder)
• Nix version: (run nix-env --version)
  nix-env (Nix) 1.11.4
• Nixpkgs version: (run nix-instantiate --eval '<nixpkgs>' -A lib.nixpkgsVersion)
  16.09.741.354fd37

configuration.nix.txt
nix-env-packages.txt
config.nix.txt
X.0.log.txt

[kamilchm]

I needed to add new inputClassSection to my config https://github.com/kamilchm/nixos-config/blob/master/configuration.nix#L113:L117 to disable touchpad.

[Radvendii]

should this be encapsulated into an option / included in synaptics.enable = false;?

[tvestelind]

I wonder why it wasn't needed before and what changed. Too me it seems like the root-cause is somewhere else.

[tvestelind]

I'm not sure that this is applicable anymore as I've stop using NixOS a.t.m. Shall I close this?

[vcunat]

I'd leave it open until someone confirms it's been fixed.

[simendsjo]

This is an issue on my X1 Carbon using 18.9 too.
Doesn't seem like palmMinWidth or palmMinZ works like expected either. I can set values in the thousands, and I still press the touchpad by mistake once every few letters I type.

[stale[bot]]

Thank you for your contributions.

This has been automatically marked as stale because it has had no activity for 180 days.

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[btwiusegentoo]

This issue still is not resolved btw
It's possible to disable in BIOS config. but not on coreboot
inputClassSections works.