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# The GT 750M (GK107M, Kepler) runs under the nouveau open-source driver on Linux.
# Nouveau does not perform automatic GPU reclocking on Kepler — it boots at the
# lowest power state (AC: ~405 MHz core / ~680 MHz memory) and stays there.
# This causes severe lag under Wayland compositors (Hyprland) even on simple
# tasks like switching windows, because the GPU is starved of bandwidth.
#
# The fix is to force the highest performance state (0f: 925 MHz core / 5016 MHz
# memory) via the nouveau DRM pstate sysfs interface. We do this with a udev rule
# that fires the moment nouveau initializes the GPU's DRM device.
#
# We intentionally do NOT install the proprietary nvidia-470xx-dkms driver because:
# - nvidia-470xx + Wayland/Hyprland on Kepler has documented upstream instability
# - External monitors are wired to NVIDIA outputs; without a working Wayland stack
# the setup is unusable
# - nouveau with forced pstate provides acceptable performance for desktop use
- name: "Force nouveau pstate to maximum on GT 750M"
become: true
ansible.builtin.template:
src: "99-nouveau-pstate-gt750m.rules.j2"
dest: "/etc/udev/rules.d/99-nouveau-pstate-gt750m.rules"
mode: "0644"
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