diff --git a/telemetry/README.md b/telemetry/README.md
index f7464da..d499ab9 100644
--- a/telemetry/README.md
+++ b/telemetry/README.md
@@ -172,6 +172,11 @@ So a job's lines are one query away, from the client and the QPM alike:
 {service_name="qfw-qpm", qfw_device_name="fake-iqm-20q"} | severity_text=~"ERROR|CRITICAL"
 ```
 
+On the dashboards, and in the hop from a span to its logs, each line starts
+with the component that wrote it, `[client]` or `[qpm fake-iqm-20q]`: the
+panels show a line's body, not its labels, and a job's story has two
+writers. The labels are still there in a line's details.
+
 Three links tie the signals together: the QFw Trace dashboard shows a job's
 lines under its waterfall; a span's **Logs for this span** button in Explore
 runs the first query for its trace; and a log line's `trace_id` opens its
diff --git a/telemetry/grafana/dashboards/qfw-jobs.json b/telemetry/grafana/dashboards/qfw-jobs.json
index 4b80b8b..1f7d1d4 100644
--- a/telemetry/grafana/dashboards/qfw-jobs.json
+++ b/telemetry/grafana/dashboards/qfw-jobs.json
@@ -898,7 +898,7 @@
             "uid": "qfw-loki"
           },
           "refId": "A",
-          "expr": "{service_name=~\"qfw-.+\"} | severity_text=~\"WARN.*|ERROR|CRITICAL\"",
+          "expr": "{service_name=~\"qfw-.+\"} | severity_text=~\"WARN.*|ERROR|CRITICAL\" | line_format \"[{{.qfw_component_role}}{{if .qfw_device_name}} {{.qfw_device_name}}{{end}}] {{__line__}}\"",
           "queryType": "range"
         }
       ],
diff --git a/telemetry/grafana/dashboards/qfw-trace.json b/telemetry/grafana/dashboards/qfw-trace.json
index d9a5375..a6057e5 100644
--- a/telemetry/grafana/dashboards/qfw-trace.json
+++ b/telemetry/grafana/dashboards/qfw-trace.json
@@ -116,7 +116,7 @@
             "uid": "qfw-loki"
           },
           "refId": "A",
-          "expr": "{service_name=~\"qfw-.+\"} | trace_id=\"${traceId}\"",
+          "expr": "{service_name=~\"qfw-.+\"} | trace_id=\"${traceId}\" | line_format \"[{{.qfw_component_role}}{{if .qfw_device_name}} {{.qfw_device_name}}{{end}}] {{__line__}}\"",
           "queryType": "range"
         }
       ],
diff --git a/telemetry/grafana/provisioning/datasources/qfw.yaml b/telemetry/grafana/provisioning/datasources/qfw.yaml
index 134c416..8d9c879 100644
--- a/telemetry/grafana/provisioning/datasources/qfw.yaml
+++ b/telemetry/grafana/provisioning/datasources/qfw.yaml
@@ -38,7 +38,7 @@ datasources:
         customQuery: true
         # Grafana expands $VAR in provisioning files, so the span variable
         # the query needs at run time is written with a doubled dollar.
-        query: '{service_name=~"qfw-.+"} | trace_id="$${__span.traceId}"'
+        query: '{service_name=~"qfw-.+"} | trace_id="$${__span.traceId}" | line_format "[{{.qfw_component_role}}{{if .qfw_device_name}} {{.qfw_device_name}}{{end}}] {{__line__}}"'
 
   - name: Loki
     uid: qfw-loki