Custom Presets

Custom Presets

The Custom Preset Editor lets you build your own ryzenadj argument sets from named, bounded parameters. Saved presets are stored in custom.json alongside config.ini and appear everywhere in the app alongside the built-in presets.

Full path on a standard install:

/opt/uxtu4linux/src/Assets/custom.json

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Using the Editor

Open the editor from the main menu: Custom Preset

If you have existing presets, a picker appears first. Select one to edit it, or choose Create new preset to start from scratch.

Navigation

Key	Action
1 2 3 4	Switch between sections (Temp / Power / VRM / iGPU)
↑ / ↓	Move between fields
Space	Toggle a field on or off
← / →	Decrease / increase the value
S	Save the preset
L	Load a saved preset
D	Delete a saved preset
Esc	Go back (prompts to discard if unsaved changes exist)

A field must be enabled (shown with [✓]) to be included in the ryzenadj command. Disabled fields are ignored entirely.

You cannot save a preset with no fields enabled.

Sections and Parameters

[1] Temp - APU Temperature Tuning

Field	ryzenadj flag	Unit	Default	Range	Description
APU Temp Limit	--tctl-temp	°C	95	10–105	Temperature limit at which the APU starts soft throttling
Skin Temp Limit	--skin-temp-limit	°C	45	8–105	Laptop chassis temperature limit at which the APU starts throttling

[2] Power - APU Power Tuning

Field	ryzenadj flag	Unit	Default	Range	Description
STAPM Power Limit	--stapm-limit	W	28	5->300	Long-term skin-temperature-aware power limit
Slow Power Limit	--slow-limit	W	28	5->300	Slow boost duration power limit
Slow Boost Duration	--slow-time	s	128	2->1024	How long the APU stays in the slow boost window
Fast Power Limit	--fast-limit	W	28	5->300	Fast boost duration power limit
Fast Boost Duration	--stapm-time	s	64	2->1024	How long the APU stays in the fast boost window

All W values are automatically multiplied by 1000 (converted to mW) before being sent to ryzenadj.

[3] VRM - APU VRM Tuning

Field	ryzenadj flag	Unit	Default	Range	Description
CPU TDC Limit	--vrm-current	A	64	8->300	CPU sustained current limit (Thermal Design Current)
CPU EDC Limit	--vrmmax-current	A	64	8->300	CPU peak current limit (Electrical Design Current)
SoC TDC Limit	--vrmsoc-current	A	64	8->300	SoC sustained current limit
SoC EDC Limit	--vrmsocmax-current	A	64	8->300	SoC peak current limit
GFX TDC Limit	--vrmgfx-current	A	64	8->300	iGPU sustained current limit
GFX EDC Limit	--vrmgfxmax_current	A	64	8->300	iGPU peak current limit

All A values are automatically multiplied by 1000 (converted to mA) before being sent to ryzenadj.

Some flags may not be supported on all APU families. Unsupported flags are silently skipped by ryzenadj.

[4] iGPU - iGPU Clock Tuning

Field	ryzenadj flag	Unit	Default	Range	Description
Max iGPU Clock	--max-gfxclk	MHz	1000	200->4000	Hard ceiling on iGPU boost clock
Min iGPU Clock	--min-gfxclk	MHz	200	200->4000	Floor frequency for the iGPU

iGPU clock changes require a system reboot or sleep/wake cycle to revert to firmware defaults.

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custom.json Format

The file is a JSON array. Each entry is an object with a name key and one key per parameter.

[
  {
    "name": "my_preset",
    "tctl_temp":        { "enabled": true,  "value": 90 },
    "skin_temp_limit":  { "enabled": true,  "value": 45 },
    "stapm_limit":      { "enabled": true,  "value": 25 },
    "slow_limit":       { "enabled": true,  "value": 25 },
    "slow_time":        { "enabled": false, "value": 128 },
    "fast_limit":       { "enabled": true,  "value": 30 },
    "stapm_time":       { "enabled": false, "value": 64 },
    "vrm_current":      { "enabled": true,  "value": 50 },
    "vrmmax_current":   { "enabled": true,  "value": 60 },
    "vrmsoc_current":   { "enabled": false, "value": 64 },
    "vrmsocmax_current":{ "enabled": false, "value": 64 },
    "vrmgfx_current":   { "enabled": false, "value": 64 },
    "vrmgfxmax_current":{ "enabled": false, "value": 64 },
    "max_gfxclk":       { "enabled": false, "value": 1000 },
    "min_gfxclk":       { "enabled": false, "value": 200 }
  }
]

Fields:

Key	Type	Description
name	string	Internal identifier. The app displays this as <name> and stores it in config.ini as <name>_custom_preset
<param>.enabled	boolean	Whether this parameter is included in the ryzenadj command
<param>.value	integer	Value in the unit shown in the editor (W, A, °C, or MHz not mW/mA)

Values are clamped to their defined range on load, so out-of-range values in the file are silently corrected.

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How Presets Are Applied

When a custom preset is selected, the app builds a ryzenadj argument string from all enabled fields and passes it to the daemon. The conversion to mW/mA happens at build time, the stored values in JSON are always in the human-readable unit (W, A).

Example: a preset with stapm_limit = 25 (W) produces --stapm-limit=25000 in the ryzenadj command.

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Behaviour When a Preset Is Deleted

• If the deleted preset is the active one in Power Management, the app automatically resets [User] mode to Balance and applies it.
• If the deleted preset is referenced in either Automations slot, that slot is cleared to (None).
• If both Automations slots end up empty after the deletion, the override is automatically disabled.
• The daemon is notified of all changes immediately, no restart required.

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Resetting

Delete the file to clear all custom presets:

rm /opt/uxtu4linux/src/Assets/custom_presets.json

An empty file is recreated automatically on the next launch.