The visible symptom is often too vague. “The task stopped” can describe several different failures:

1. The Web UI disconnected, but the Mac and process are still active.
2. The Mac entered sleep, so network access and process progress changed.
3. You disconnected from the remote session, but did not log out of macOS.
4. The macOS user logged out, changing the process context and credentials.
5. The Harness process or a child process exited while the session record remained visible.
6. The Mac restarted, leaving partial files and an uncertain completion state.

The public DeepSeek Harness README describes its package structure, command-line tool, MCP server, session-related components, and execution architecture. It does not provide a blanket promise that every task automatically resumes across sleep, user logout, process exit, or system restart. Treat automatic recovery as a behavior to test for your exact version and execution mode, not as an assumption. (github.com)

Scenario: the page is gone, but the job may still be alive

A disconnected Web UI is a presentation failure until proven otherwise.

Suppose you launched a build through a remote browser. The browser tab reports a timeout. Before submitting the prompt again, open a second connection. Use SSH, a separate terminal, or another approved management path. Then inspect:

date
ps -axo pid,ppid,user,etime,state,command | grep -i harness
pgrep -alf 'deepseek|harness|node|python'

The exact process name varies by installation. The point is to identify the parent process, its children, elapsed runtime, and current state.

Next, inspect the controlled log:

tail -n 80 /path/to/task.log
stat -f '%Sm %z %N' /path/to/task.log

Check whether the expected workspace is changing:

git status --short
git diff --stat
find ./artifacts -type f -mmin -30 -print

Continue waiting only if the process is alive, new events are appearing, and the expected workspace or artifact side effects are traceable.

A session record is evidence of history. It is not proof of current execution.

macOS sleep changes the operating conditions of a task. It can reduce network availability, pause ordinary execution, and interrupt tools that depend on a live user session or active connection. Apple documents settings for preventing automatic sleep, enabling Power Nap, and allowing wake for network access. Those settings do not prove that a particular Harness task will resume correctly. (support.apple.com)

Use the power state as evidence, not as a conclusion:

pmset -g
pmset -g assertions
pmset -g sched

Apple documents pmset -g sched for viewing scheduled power events and supports scheduling sleep, wake, restart, and shutdown operations through pmset. (support.apple.com)

Record these timestamps:

• Last Harness event.
• Last log modification.
• Last workspace modification.
• Approximate sleep start.
• Mac wake time.
• First post-wake process or network event.

Do not conclude that the task died merely because the last log line predates sleep. Do not conclude that it survived merely because the process ID still exists after wake.

First step: compare the sleep interval with task evidence

Create a small recovery note before making changes:

Task:
Workspace:
Last known Harness event:
Last log modification:
Observed sleep or disconnect:
Wake or reconnect:
Process found after wake:
Artifacts verified:
Recovery decision:

Then inspect the workspace:

git status --short
git diff --name-only
find . -type f -newermt "2026-08-19 08:00:00" -print

Replace the timestamp with the actual recovery window. Avoid relying on a single file timestamp. A generated file may be touched before the command that produced it finishes.

Warning: If some files changed, tests are incomplete, and the final command status is unknown, stop automatic continuation. Partial output is not a successful checkpoint.

The phrase “Mac sleep interrupted DeepSeek Harness” therefore describes a recovery investigation, not a single command.

Closing a browser, disconnecting from SSH, logging out of macOS, and restarting the Mac are four different events.

Apple separates system processes from login-session processes. A login session is associated with an authenticated user. When that user logs out, macOS attempts to terminate processes belonging to that session. A session identifier also changes after a new login. (developer.apple.com)

That creates four separate checks:

• Browser closed: The UI is gone. The task may still run.
• Remote connection closed: The shell may exit, or the process may survive depending on how it was started.
• macOS user logged out: User-scoped processes, credentials, Keychain access, and graphical permissions may change.
• System restarted: Every ordinary process ended. Recovery depends on startup configuration and persisted state.

Inspect the current identity and session:

whoami
id
echo "$HOME"
stat -f '%Su %Sm %N' "$HOME"
launchctl print-disabled "gui/$(id -u)"

If the Harness depends on a user-level LaunchAgent, confirm that the expected user is logged in and that the service belongs to that user. Apple describes LaunchAgents as processes running for the currently logged-in user, while LaunchDaemons operate in the system context and can run without an active user login. (developer.apple.com)

Do not reuse credentials from the old run without checking their context. Keychain entries, environment variables, SSH agents, GUI permissions, and API tokens may not be available in a new login session.

This is the most dangerous state for automatic recovery. The interface may show a task, session, or conversation. The underlying process may have exited hours earlier.

Apple’s launchd documentation explains that user agents are loaded when a user logs in, while launch-managed processes may be restarted according to their property-list settings. A process that exits does not automatically mean its work is resumable. The service manager may restart the wrapper, but not reconstruct the exact child process state or unfinished external operation. (developer.apple.com)

Check five items before restarting:

1. Parent and child processes
   Confirm whether the Harness, shell, compiler, test runner, and helper tools exist.

2. Workspace difference
   Review modified files, untracked files, generated code, and staged changes.

3. Lock files
   A stale lock can indicate an abandoned stage. Removing it blindly can create concurrent execution.

4. External side effects
   Check commits, uploaded artifacts, deployment records, database changes, or submitted jobs.

5. Task idempotency
   Determine whether repeating the stage creates duplicates or safely overwrites the same result.

Use a conservative decision:

• Resume when a durable checkpoint identifies the next stage.
• Rebuild when the process is gone but the workspace can be restored and reproduced.
• Manually take over when an external side effect may already have happened.
• Do not rerun when the operation could publish, deploy, charge, or submit twice without a reconciliation check.

DeepSeek Harness background tasks should be treated like build pipelines. A visible session is useful for navigation. It is not a transaction log unless you have independently verified the event and artifact model for your installed version.

Use this sequence. Do not skip directly to “continue.”

Step 1: Freeze the current state

Copy or snapshot the log. Record the current time, user, hostname, process list, and workspace status.

date
hostname
whoami
ps -axo pid,ppid,user,etime,state,command > /tmp/processes-after-recovery.txt
git status --short > /tmp/worktree-after-recovery.txt

Step 2: Confirm the Mac itself is stable

Check power and scheduled events:

pmset -g
pmset -g sched
uptime

If the Mac has just restarted, confirm the current boot and login state. A restart may also require a password or FileVault unlock before the user session becomes available. Apple notes that FileVault requires login after startup and does not permit automatic account login. (support.apple.com)

Step 3: Verify the Harness process tree

Find the parent process and children. A wrapper without its worker is not a healthy task. Look for a recent event, not merely a process ID.

Step 4: Validate the workspace

Use version control, checksums, generated artifact inspection, and the smallest relevant test. Do not ask the Agent to infer that a missing result was produced before the restart.

git diff --check
git diff --stat
shasum -a 256 path/to/important-artifact

Step 5: Re-authenticate dependencies

Check API keys, SSH credentials, Keychain permissions, environment variables, and access to the remote repository or artifact store. A new user session can expose a different environment even when the filesystem is unchanged.

Step 6: Select the recovery mode

Choose one:

• Continue the live process.
• Resume from a verified checkpoint.
• Rebuild from a clean worktree.
• Stop for human approval.

The recovery standard is not “the UI loads.” The standard is “the current stage, process state, workspace state, and external side effects are all explainable.”

Use the following acceptance checklist after every change to the power or startup setup:

• [ ] Run one task while the Web UI disconnects, then verify it through a second connection.
• [ ] Put the Mac into controlled sleep and record the last Harness event before sleep.
• [ ] Wake the Mac and verify process state, workspace differences, and artifacts.
• [ ] Terminate the Harness process and confirm whether the configured supervisor behaves as expected.
• [ ] Restart the Mac and verify startup order, user session, credentials, and worktree state.
• [ ] Run a small post-restart test before allowing a long task to continue.
• [ ] Confirm that duplicate submission cannot create a second external side effect.
• [ ] Record the exact Harness version and macOS version used for the test.

Apple recommends launchd for per-user background processes and documents that user agents run in the context of a logged-in user. That makes the process context part of the design, not an implementation detail. (developer.apple.com)

A local Mac is reasonable when:

• The task can be safely rerun.
• The user can inspect failures quickly.
• Physical access or local development tools matter.
• Sleep prevention and restart behavior are controlled.
• The occupancy window is short enough that manual recovery is acceptable.

An independent Mac environment is preferable when:

• The process must remain available across work sessions.
• The job occupies the machine overnight or across multiple days.
• Remote access is the normal operating model.
• You need repeatable restart tests.
• A failed task has meaningful external side effects.

For a remote delivery model, start with the KVMNODE Mac cloud ordering options, then validate the actual environment with the same four-event test: disconnect, sleep, process exit, and restart. Regional delivery pages such as the US East Mac environment and US West Mac environment should be evaluated by recovery behavior, not by the assumption that a remote Mac automatically preserves every session.

Will DeepSeek Harness keep running after I close my MacBook lid?

Not reliably by default. Closing the lid can trigger macOS sleep, which changes power and network availability. The task may pause, lose a connection, or continue only if the Mac remains awake through an approved power configuration. After waking the Mac, verify the process, recent event time, workspace changes, and output artifacts before deciding whether to wait or restart.

Does a disconnected Web UI mean the Agent task has stopped?

No. A browser or remote control connection can fail while the Mac and Harness process continue running. Use SSH or another independent channel to check reachability, inspect the process tree, read the latest controlled log entry, and compare workspace changes. Treat the task as alive only when both process activity and expected side effects remain observable.

How can you tell whether a task can continue after the Mac wakes?

First preserve the workspace and logs. Then compare the last event time with the sleep interval, inspect running parent and child processes, check lock files, and validate partial artifacts. Continue only when the process is alive and the current stage is unambiguous. If files changed but completion is unknown, stop automation and rebuild a trusted baseline.

Will DeepSeek Harness automatically restore its session after a remote Mac restart?

Do not assume it will. A visible session record is not proof that the process, child tools, credentials, or graphical permissions were restored. Check whether a service manager restarted the correct user or system process, whether the workspace is intact, and whether the Harness version supports the required persistence behavior. Otherwise, recover manually from verified artifacts.

How can long-running Agent tasks avoid macOS sleep interruptions?

Classify the task first. Jobs that can be safely rerun may use a local Mac with controlled sleep settings. Jobs that must retain a live process should run on a continuously available Mac with explicit restart handling, log persistence, and post-reboot acceptance tests. Test sleep, network loss, process termination, and restart before trusting unattended execution.

A local Mac gives you direct access and a simple development loop. Its weaknesses are equally clear: sleep can interrupt progress, a user logout can remove user-scoped services, and a restart can leave the Harness state unclear. A browser connection also creates a misleading second failure mode because the page can disappear while the process continues.

If the task must cross work hours, the safer choice is an independent Mac environment that you can keep online, test after restart, and monitor through a separate control path. KVMNODE can be evaluated for that use case after you establish the recovery boundary with the four-event checklist above. Renting is most useful for temporary build windows, remote testing, and jobs that need a Mac available without tying your personal machine to unattended execution.