# Device Reset Guide

A reset cuts power to one part of a Kuori unit and lets it start again. It is the remote equivalent
of pulling a plug, and it fixes the class of fault where a component has stopped responding but the
hardware is fine.

Resets act on real equipment at a real site. A reset during opening hours puts a screen out for the
time it takes to boot. Read the rest of this page before you send one.

## Where to find them

Two places, doing the same thing.

The **Manage** button on any row of the device list opens the reset commands directly.

![The Manage menu open on a device row, listing the five reset commands](https://wiki.kuori.com/uploads/images/gallery/2026-09/devices-manage-menu.png)

The **Management** tab on a device's own page has the same five as buttons, plus scheduling.

![The Management tab, with the five reset buttons](https://wiki.kuori.com/uploads/images/gallery/2026-09/VGtdevice-tab-management.png)

## The rules

Three of them, and they matter more than knowing which button is which.

Send one reset at a time. After each one, wait five minutes for the component to restart before
you decide whether it worked. Resets are only possible while the device is online.

When you do not know which one you need, work through them in this order and stop as soon as the
symptom clears:

**Mediaplayer → LCD Driver → Modem (if reachable) → Host → SMB**

That order runs from the least disruptive to the most. The last two take the whole unit down for a
boot cycle.

## The five targets

**Reset Mediaplayer** restarts the separate media player computer that handles signage playback.
Use it when content is stuck, playback has frozen, scheduled media does not start, or the signage
software is not responding. Give the player time to boot and reconnect before you judge the result.
This is the most common reset and the least disruptive.

**Reset LCD Driver** restarts the display driver interface between the media player and the screen.
Use it when the display is black, flickering, frozen, showing artifacts, or otherwise visually
corrupted while the device itself still looks like it is running. It targets the display path
without rebooting the whole system.

**Reset Modem** restarts modem and router control to recover unstable connectivity. Use it only
when the device is still reachable but the connection is poor, meaning high latency, intermittent
drops, or unstable remote access. A device that is fully offline cannot be helped this way, because
the command travels over the very connection that is down.

**Reset Host** restarts the SMB host, normally the Android board, and the DSM client running on it.
Use it when the host side is unstable, the client is unresponsive, or the targeted resets above did
not fix it. This takes the device offline for a while.

**Reset SMB** restarts the System Management Board, which controls core hardware functions such as
the fans, the heater, reboot control, and temperature supervision. Use it when hardware control is
not reacting normally, or the device seems electrically or thermally unstable. The SMB is also what
performs the other four resets, which is why it comes last. It is the right move when the client
reports SMB disconnected while the device is otherwise online, meaning the client is running but
cannot reach the board.

## Sending one

1. Check the device is online. The status badges on the device page, or the Online dot in the list,
   tell you.
2. Pick the target.
3. Confirm.

![The confirmation dialog before a reset is sent](https://wiki.kuori.com/uploads/images/gallery/2026-09/reset-confirmation.png)

DSM confirms that the command was sent. That means DSM handed it to the device, not that the reset
worked. Wait five minutes, then check the device's Events tab and its status badges. An SMB reset
shows up as an event naming the reason the board restarted.

## Offline devices

Every reset is disabled for an offline device, and DSM says so rather than letting you click a
button that would do nothing.

![The Management tab of an offline device, with every command disabled](https://wiki.kuori.com/uploads/images/gallery/2026-09/G9Xdevice-offline-management.png)

There is no way around this, and it is the right behaviour. A reset is a message to a device, and an
offline device is not listening. If a device is offline and stays offline, DSM has done what it can
and the site needs a visit.

## Scheduling a reset

Under **Scheduled commands** on the Management tab, **New schedule** sets a reset to run at the same
time every day.

![The Add schedule dialog, with a time and a reset command type](https://wiki.kuori.com/uploads/images/gallery/2026-09/reset-schedule-dialog.png)

Pick a time and a reset command type, then save. A nightly media player reset is a reasonable way to
live with a player that drifts over a few days.

The schedule runs on the device's own timezone, which the tab shows above the button. If that
timezone is wrong or unset, fix it on the Settings tab first. A schedule set to 03:00 against the
wrong timezone will reset a screen in the middle of the trading day.

Schedules can be saved for an offline device. They start once it reconnects.

Scheduled commands need client version 0.4.20 or newer, and they are not available on Windows
devices. DSM tells you when the client is too old.

## Which reset to try

When the symptom points somewhere specific, start there rather than at the top of the order. Wait
five minutes after each attempt before moving to the next column.

| Symptom | Try first | Then |
| --- | --- | --- |
| Content stuck or frozen, playback not starting | Reset Mediaplayer | Reset Host |
| Display black, flickering, or showing artifacts | Reset LCD Driver | Reset Host |
| Connection poor, latency high, dropping in and out | Reset Modem | Reset Host |
| DSM client unresponsive, host unstable | Reset Host | Reset SMB |
| Device online but SMB disconnected | Reset SMB | Site visit |
| Fans, heater, or temperatures behaving oddly | Reset SMB | Site visit |
| Device fully offline | Nothing. Resets need the connection | Site visit |

## When a reset is not the answer

Repeat resets on the same device are a symptom, not a fix. If a unit needs a daily reset to stay
usable, log it in the device's Notes and raise it with Kuori. The Display health tab and a per-day
Offline report will show you the pattern, and that pattern is what makes the case for a hardware
swap.

A reset also cannot help with content. If the playlist is wrong, resetting the media player
reloads the same wrong playlist.