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dwi.dot.yogi edited this page Aug 12, 2026 · 3 revisions

Frequently Asked Questions

Does NoBrain require Android root?

No. It runs the Void Linux userspace through PRoot.

Does an official APK update delete Linux data?

No, provided you install it as an update over the existing package. Do not uninstall or clear app data. The package ID and release certificate must match.

Can I jump directly from 0.1.0 to a newer release?

Android can install the newest official APK directly over an older official version; intermediate versions are not required. The current update still downloads the full APK. A smaller in-application delta updater is planned for a future release but is not part of 0.1.5.

Where are my Linux files?

The persistent Linux home is /home/nobrain. Android-visible files are under /sdcard, including /sdcard/Download.

Why does SSH use the user nobrain, not my Android or developer username?

Every installation uses the Linux login user nobrain. The exported key path is Android's shared Download/NoBrain-SSH directory and does not depend on a host username.

Can SSH install updates silently?

SSH can manage packages inside the Linux guest. Android APK installation still requires Android's package installer confirmation unless the device grants special system-management privileges, which NoBrain does not request.

Why can WPS open a file from Android storage but refuse PDF export there?

WPS performs an internal ownership/mode check that does not understand the UID/GID presentation of Android shared storage inside PRoot. Export to /home/nobrain/Documents/WPS-Export first.

Why does Chromium show a no-sandbox warning?

The normal Chromium sandbox is unavailable in the current PRoot environment. The warning is safer than hiding it with testing flags or invalid Google API credentials that can break authentication.

What passwords are used on a fresh install?

Both nobrain and root initially use nobrain. Change them:

passwd
sudo passwd root

SSH remains key-only until the owner explicitly selects another mode.

Where should I report a bug?

Use GitHub Issues. Never include private keys, passwords, tokens, or personal documents.


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