Live ISO: cups.socket not enabled, so Printers shows 'Scheduler is not running' #93

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opened 2026-10-13 20:00:51 +08:00 by Breadway · 1 comment

Breadway commented

2026-10-13 20:00:51 +08:00

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How it was found: clicking through a fresh BOS ISO (16b4bb8) in QEMU on 2026-10-13. bos-settings Printers page shows "The printing service isn't answering. lpstat: Scheduler is not running." systemctl is-enabled cups.service cups.socket = disabled/disabled in the live session.

Confidence: high for the live session. Installed systems enable cups.socket in iso/airootfs/etc/calamares/post-install.sh line ~549, so it is only live-media behaviour.

Bug: a user trying the live USB with a printer can't print or add one, and the error reads like something is broken.

Fix: enable cups.socket (and avahi-daemon.socket if wanted) in the live airootfs (multi-user.target.wants / sockets.target.wants symlink), matching post-install. Separately bos-settings could offer "Start printing service" rather than the raw lpstat text.

**How it was found:** clicking through a fresh BOS ISO (16b4bb8) in QEMU on 2026-10-13. bos-settings Printers page shows "The printing service isn't answering. lpstat: Scheduler is not running." `systemctl is-enabled cups.service cups.socket` = disabled/disabled in the live session. **Confidence:** high for the live session. Installed systems enable cups.socket in iso/airootfs/etc/calamares/post-install.sh line ~549, so it is only live-media behaviour. **Bug:** a user trying the live USB with a printer can't print or add one, and the error reads like something is broken. **Fix:** enable cups.socket (and avahi-daemon.socket if wanted) in the live airootfs (multi-user.target.wants / sockets.target.wants symlink), matching post-install. Separately bos-settings could offer "Start printing service" rather than the raw lpstat text.

Breadway commented

2026-10-20 15:22:14 +08:00

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PR opened: #95 (Breadway/bos #95)
Head SHA: 94b7b1ff46
Adds the cups.socket symlink to the live airootfs (sockets.target.wants) and a staged-image assertion in scripts/ci-verify-bake.sh. Verified by bash -n and a fixture only. Not verified live, no ISO baked. Needs independent review.

PR opened: https://git.breadway.dev/Breadway/bos/pulls/95 (Breadway/bos #95) Head SHA: 94b7b1ff46452028429d45d8dc0569e74ca112b8 Adds the cups.socket symlink to the live airootfs (sockets.target.wants) and a staged-image assertion in scripts/ci-verify-bake.sh. Verified by bash -n and a fixture only. Not verified live, no ISO baked. Needs independent review.