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Diffstat (limited to 'roles/nvidia_gt750m/tasks')
| -rw-r--r-- | roles/nvidia_gt750m/tasks/main.yml | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/roles/nvidia_gt750m/tasks/main.yml b/roles/nvidia_gt750m/tasks/main.yml new file mode 100644 index 00000000..1a78f985 --- /dev/null +++ b/roles/nvidia_gt750m/tasks/main.yml @@ -0,0 +1,22 @@ +--- +# 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" |