Noteworthy changes

Curve value format

• Curve step values can now be specified as percentages (e.g. 40: 20%)
• The previous integer range [0..255] is still supported; old configs should be migrated to
  floats (40: 20.0) or percentages (40: 20%)

Behavior changes

pwmMap expansion now uses step interpolation:

• A key k with value v means: use hardware PWM v for all internal values ≥ k up to the
  next key. Previously, fan2go used nearest-neighbor (transitioning at the midpoint between
  adjacent keys).
• Example — {0:0, 64:128, 192:255}: previously switched at ~32 and ~128; now switches exactly
  at 64 and 192.
• If you have a sparse pwmMap, verify it still behaves as intended after upgrading.

Curve value → fan speed mapping has changed:

• 0 / 0% → stop (PWM 0), unless neverStop: true, then → MinPwm
• 1 / 1% → MinPwm (regardless of neverStop)
• 255 / 100% → MaxPwm
• Values in [1..255] / [1%..100%] are linearly scaled to [MinPwm..MaxPwm]
• Verify your setup after upgrading; adjust curve values if behavior has changed

sanityCheck.fanModeChangedByThirdParty is now disabled by default:

• Previously, fan2go re-asserted manual PWM mode on every control cycle (effectively always on)
• It is now opt-in (enabled: false by default) and throttled (default: every 10 seconds when enabled)
• Enable it if a buggy BIOS or third-party software keeps overwriting fan2go's fan mode setting:

  sanityCheck:
    fanModeChangedByThirdParty:
      enabled: true
      throttleDuration: 10s  # optional, default

New options

useUnscaledCurveValues (fan config, default: false):

• When true, disables [MinPwm..MaxPwm] scaling; curve values are passed through almost
  unchanged (assuming a standard 1:1 pwmMap)
• neverStop: true still clamps values below MinPwm up to MinPwm

--assume-pwm-map-identity flag for fan2go fan init:

• Skips automatic detection of setPwmToGetPwmMap during fan initialization; assumes a 1:1 mapping
• Worth trying if fan init produces wrong or unexpected results — particularly on fans that don't
  immediately report back the last-set PWM value during the measurement sequence
• If your fan's auto-generated pwmMap is incorrect after initialization, configure it manually
  using the pwmMap fan config option

Changelog

• Bump github.com/oklog/run from 1.1.0 to 1.2.0 (#413) by @dependabot[bot]
• Bump github.com/spf13/cobra from 1.9.1 to 1.10.2 (#438) by @dependabot[bot]
• Bump github.com/stretchr/testify from 1.10.0 to 1.11.1 (#439) by @dependabot[bot]
• Bump github.com/go-viper/mapstructure/v2 from 2.3.0 to 2.4.0 (#422) by @dependabot[bot]
• Bump go.etcd.io/bbolt from 1.4.2 to 1.4.3 (#420) by @dependabot[bot]
• Bump golang.org/x/crypto from 0.38.0 to 0.45.0 (#432) by @dependabot[bot]
• Fixes for fans without getPwm (#437) by @pborzenkov
• Bump golangci/golangci-lint-action from 9.1.0 to 9.2.0 (#436) by @dependabot[bot]
• Bump golangci/golangci-lint-action from 8.0.0 to 9.1.0 (#434) by @dependabot[bot]
• Bump actions/checkout from 5 to 6 (#433) by @dependabot[bot]
• Bump github.com/NVIDIA/go-nvml from 0.12.9-0 to 0.13.0-1 (#423) by @dependabot[bot]
• Bump actions/checkout from 4 to 5 (#419) by @dependabot[bot]
• Bump actions/setup-go from 5 to 6 (#427) by @dependabot[bot]
• Bump github.com/go-viper/mapstructure/v2 from 2.2.1 to 2.3.0 (#412) by @dependabot[bot]
• Bump go.etcd.io/bbolt from 1.4.1 to 1.4.2 (#414) by @dependabot[bot]

🚀 Features and ✨ Enhancements

• Allow percent values for speed in linear curves (#390) by @DanielGibson

🐛 Bugfixes

• avoid writing an empty setPwmToGetPwm map to the database (#442) by @markusressel