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corsair-platinum-pro-xt-guide.md

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Corsair Hydro Platinum and Pro XT all-in-one liquid coolers

Driver API and source code available in liquidctl.driver.hydro_platinum.

Initializing the device and setting the pump mode

The device should be initialized every time it is powered on, including when the system resumes from suspending to memory.

# liquidctl initialize
Corsair Hydro H100i Platinum
└── Firmware version    1.1.15

By default the pump mode will be set to balanced, but a different mode can be specified with --pump-mode. The valid values for this option are quiet, balanced and extreme.

# liquidctl initialize --pump-mode extreme
Corsair Hydro H100i Platinum
└── Firmware version    1.1.15

Unconfigured fan channels may default to 100% duty, so reprogramming their behavior is also recommended after running initialize for the first time since the cooler was powered on. Subsequent executions of initialize should leave the fan speeds unaffected.

Retrieving the liquid temperature and fan/pump speeds

The cooler reports the liquid temperature and the speeds of all fans and pump.

# liquidctl status
Corsair Hydro H100i Platinum
├── Liquid temperature    27.0  °C
├── Fan 1 speed           1386  rpm
├── Fan 1 duty              50  %
├── Fan 2 speed           1389  rpm
├── Fan 2 duty              50  %
└── Pump speed            2357  rpm

Programming the fan speeds

Each fan can be set to either a fixed duty cycle, or a profile consisting of up to seven (temperature, duty) pairs. Temperatures should be given in Celsius and duty values in percentage.

Profiles run on the device and are always based on the internal liquid temperature probe. The last point should set the fan to 100% duty cycle, or be omitted; in the latter case the fan will be set to max out at 60°C.

# liquidctl set fan1 speed 70
                ^^^^       ^^
               channel    duty

# liquidctl set fan2 speed 20 20 40 70 50 100
                           ^^^^^ ^^^^^ ^^^^^^
                   pairs of temperature (°C) -> duty (%)

Valid channel values are fanN, where N >= 1 is the fan number, and fan, to simultaneously configure all fans.

As mentioned before, unconfigured fan channels may default to 100% duty.

Note: pass --verbose to see the raw settings being sent to the cooler, after normalization of the profile and enforcement of the (60°C, 100%) fail-safe.

Controlling the LEDs

In reality these coolers do not have the concept of different channels or modes, but liquidctl provides a few for convenience.

The table bellow summarizes the available channels, modes, and their associated maximum number of colors for each device family.

Channel Mode LEDs Components Platinum Pro XT Platinum SE
led off synchronized all off 0 0 0
led fixed synchronized independent 1 1 1
led super-fixed independent independent 24 16 48

The led channel can be used to address individual LEDs, and supports the super-fixed, fixed and off modes.

In super-fixed mode, each color supplied on the command line is applied to one individual LED, successively. LEDs for which no color has been specified default to off/solid black. This is closest to how the device works.

In fixed mode, all LEDs are set to a single color supplied on the command line. The off mode is simply an alias for fixed 000000.

# liquidctl set led color off
# liquidctl set led color fixed ff8000
# liquidctl set led color fixed "hsv(90,85,70)"
# liquidctl set led color super-fixed <up to 24 colors>
                ^^^       ^^^^^^^^^^^ ^
              channel        mode     colors...

Each color can be specified using any of the supported formats.

Animations are not supported at the hardware level, and require successive invocations of the commands shown above, or use of the liquidctl APIs.