docs: add note in CI overview about how to disable dbus #6274
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cypress-documentation
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cypress-documentation
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docs/disable-dbus-in-docker
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| Run duration | 04m 20s |
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| Committer | Cacie Prins |
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UI Coverage
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AtofStryker
reviewed
Sep 15, 2025
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| This error message indicates that Electron is attempting to connect to `dbus`, a desktop environment service, when there is no `dbus` present. | ||
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| Cypress does its best to detect non-interactive shells and disable `dbus` by setting the `DBUS_SESSION_BUS_ADDRESS` environment variable to `disabled:`. |
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Suggested change
| Cypress does its best to detect non-interactive shells and disable `dbus` by setting the `DBUS_SESSION_BUS_ADDRESS` environment variable to `disabled:`. | |
| Cypress attempts to detect non-interactive shells and disable `dbus` by setting the `DBUS_SESSION_BUS_ADDRESS` environment variable to `disabled:`. |
MikeMcC399
reviewed
Sep 16, 2025
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This doesn't work as described using Cypress 15.2.0
- From issue cypress-io/cypress#32290
Test code to reproduce
git clone --branch 32290-dbus-errors/cy-15 https://github.com/MikeMcC399/cypress-docker-images
cd cypress-docker-images
cd examples/basic # Use a pre-configured simple Cypress E2E project
npm ci # Install Cypress
docker run -it --rm -v .:/app -w /app cypress/base # Run image as containerAt the bash prompt :/app# enter the following commands:
export DBUS_SESSION_BUS_ADDRESS='disabled:' # as advised by https://github.com/cypress-io/cypress-documentation/pull/6274
npx cypress install # Install Cypress binary into running Docker container
npx cypress run # Run Cypress testLogs
$ docker run -it --rm -v .:/app -w /app cypress/base # Run image as container
root@a2beddb963af:/app# export DBUS_SESSION_BUS_ADDRESS='disabled:' # as advised by https://github.com/cypress-io/cypress-documentation/pull/6274
npx cypress install # Install Cypress binary into running Docker container
npx cypress run # Run Cypress test
[05:53:53] Verifying Cypress can run /root/.cache/Cypress/15.2.0/Cypress [started]
[05:53:55] Verifying Cypress can run /root/.cache/Cypress/15.2.0/Cypress [COMPLETED]
[258:0916/055355.288036:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[258:0916/055355.784269:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[258:0916/055355.784379:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
[258:0916/055355.785423:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix")
[258:0916/055355.785476:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix")
[258:0916/055355.785487:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix")
[258:0916/055355.785502:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix")
[258:0916/055355.785518:ERROR:dbus/object_proxy.cc:590] Failed to call method: org.freedesktop.DBus.NameHasOwner: object_path= /org/freedesktop/DBus: unknown error type:
DevTools listening on ws://127.0.0.1:44397/devtools/browser/8a1f16cb-f0ff-477c-84e7-89c555fea87a
====================================================================================================
(Run Starting)
┌────────────────────────────────────────────────────────────────────────────────────────────────┐
│ Cypress: 15.2.0 │
│ Browser: Electron 136 (headless) │
│ Node Version: v22.19.0 (/usr/local/bin/node) │
│ Specs: 1 found (spec.cy.js) │
│ Searched: cypress/e2e/**/*.cy.{js,jsx,ts,tsx} │
└────────────────────────────────────────────────────────────────────────────────────────────────┘
────────────────────────────────────────────────────────────────────────────────────────────────────
Running: spec.cy.js (1 of 1)
[258:0916/055357.322957:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix")
test local demo page
✓ heading (182ms)
1 passing (217ms)
(Results)
┌────────────────────────────────────────────────────────────────────────────────────────────────┐
│ Tests: 1 │
│ Passing: 1 │
│ Failing: 0 │
│ Pending: 0 │
│ Skipped: 0 │
│ Screenshots: 0 │
│ Video: false │
│ Duration: 0 seconds │
│ Spec Ran: spec.cy.js │
└────────────────────────────────────────────────────────────────────────────────────────────────┘
====================================================================================================
(Run Finished)
Spec Tests Passing Failing Pending Skipped
┌────────────────────────────────────────────────────────────────────────────────────────────────┐
│ ✔ spec.cy.js 220ms 1 1 - - - │
└────────────────────────────────────────────────────────────────────────────────────────────────┘
✔ All specs passed! 220ms 1 1 - - -
Ultimately, dbus error messages are typically a configuration issue - not a bug.
This is a difficult stance to take, given that the dbus error messages are a regression from Cypress 14 and for this previous version no special external configuration was necessary.
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This documentation relates to:
dbusif it doesdbusin the official Cypress imagesUltimately,
dbuserror messages are typically a configuration issue - not a bug.