diff --git a/backend/app/plugins/builtin/common/ping.py b/backend/app/plugins/builtin/common/ping.py
index e21203e..077fab4 100644
--- a/backend/app/plugins/builtin/common/ping.py
+++ b/backend/app/plugins/builtin/common/ping.py
@@ -15,13 +15,14 @@ class PingAction(BaseAction):
     async def execute(self, device: Device, obj: Object, params: dict, emit: Emitter) -> ActionResult:
         await emit(f"Pinging {device.ip}...", "info")
         start = time.monotonic()
+        proc = None
         try:
             proc = await asyncio.create_subprocess_exec(
-                "ping", "-c", "4", "-W", "2", device.ip,
+                "ping", "-c", "1", "-W", "2", device.ip,
                 stdout=asyncio.subprocess.PIPE,
                 stderr=asyncio.subprocess.PIPE,
             )
-            stdout, stderr = await asyncio.wait_for(proc.communicate(), timeout=5)
+            stdout, stderr = await asyncio.wait_for(proc.communicate(), timeout=10)
             duration = int((time.monotonic() - start) * 1000)
             success = proc.returncode == 0
             msg = f"{device.ip}: {'reachable' if success else 'unreachable'} ({duration}ms)"
@@ -29,10 +30,17 @@ class PingAction(BaseAction):
             return ActionResult(
                 success=success,
                 stdout=stdout.decode(errors="replace").strip(),
+                stderr=stderr.decode(errors="replace").strip(),
                 exit_code=proc.returncode or 0,
                 data={"ping_ms": duration if success else None},
             )
         except asyncio.TimeoutError:
+            if proc is not None:
+                try:
+                    proc.kill()
+                    await proc.wait()
+                except Exception:
+                    pass
             await emit(f"{device.ip}: ping timed out", "error")
             return ActionResult(success=False, error="Timeout")
         except Exception as e:
diff --git a/backend/app/routers/tasks.py b/backend/app/routers/tasks.py
index 8fee559..e6098a5 100644
--- a/backend/app/routers/tasks.py
+++ b/backend/app/routers/tasks.py
@@ -33,6 +33,9 @@ async def _resolve_labels(db: AsyncSession, tasks: list[Task]) -> dict[str, str]
             obj_ids.add(scope["id"])
         elif kind == "device":
             dev_ids.add(scope["id"])
+        elif kind == "device_list":
+            for did in scope.get("ids", []):
+                dev_ids.add(did)
         elif kind == "rack":
             rack_ids.add(scope["id"])
         elif kind == "zone":
@@ -77,6 +80,11 @@ async def _resolve_labels(db: AsyncSession, tasks: list[Task]) -> dict[str, str]
         elif kind == "zone":
             _zid = scope.get('id')
             labels[t.id] = f"Зона: {zone_names.get(_zid, f'#{_zid}')}"
+        elif kind == "device_list":
+            ids = scope.get("ids", [])
+            names = [devs.get(did, f"#{did}") for did in ids[:3]]
+            suffix = f" и ещё {len(ids) - 3}" if len(ids) > 3 else ""
+            labels[t.id] = ", ".join(names) + suffix
         elif kind in ("category", "role"):
             val = scope.get("value", "?")
             if oid := scope.get("object_id"):
@@ -167,4 +175,17 @@ async def get_task(
     labels = await _resolve_labels(db, [task])
     result = TaskDetail.model_validate(task)
     result.target_label = labels.get(task.id)
+
+    # Enrich device_results with IP and hostname
+    if result.device_results:
+        device_ids = [r.device_id for r in result.device_results]
+        dev_rows = await db.execute(
+            select(Device.id, Device.ip, Device.hostname).where(Device.id.in_(device_ids))
+        )
+        dev_map = {row[0]: (row[1], row[2]) for row in dev_rows.all()}
+        for r in result.device_results:
+            ip, hostname = dev_map.get(r.device_id, (None, None))
+            r.device_ip = ip
+            r.device_hostname = hostname
+
     return result
diff --git a/backend/app/schemas/task.py b/backend/app/schemas/task.py
index 5d95870..8462843 100644
--- a/backend/app/schemas/task.py
+++ b/backend/app/schemas/task.py
@@ -22,6 +22,8 @@ class TaskEventRead(BaseModel):
 class TaskResultRead(BaseModel):
     id: int
     device_id: int
+    device_ip: Optional[str] = None
+    device_hostname: Optional[str] = None
     status: str
     stdout: Optional[str] = None
     stderr: Optional[str] = None
diff --git a/backend/app/services/task.py b/backend/app/services/task.py
index a30a108..fe3cd3c 100644
--- a/backend/app/services/task.py
+++ b/backend/app/services/task.py
@@ -142,7 +142,7 @@ async def _run_on_device(
             action_stdout = ""
             action_stderr = ""
             action_exit_code = -1
-            action_data = {}
+            action_data = {"error": str(exc)}
             action_error = str(exc)
         else:
             action_result_success = action_result.success
@@ -163,7 +163,7 @@ async def _run_on_device(
                     tr.stdout = action_stdout
                     tr.stderr = action_stderr
                     tr.exit_code = action_exit_code
-                    tr.data = action_data or None
+                    tr.data = {**(action_data or {}), "error": action_error} if action_error else (action_data or None)
                     tr.duration_ms = duration_ms
 
         # For ping action: update device status, last_seen, last_ping_ms
@@ -199,8 +199,11 @@ async def _run_on_device(
             data={
                 "device_id": device.id,
                 "device_ip": device.ip,
+                "device_hostname": device.hostname,
                 "status": "success" if action_result_success else "failed",
                 "duration_ms": duration_ms,
+                "stdout": action_stdout or None,
+                "stderr": action_stderr or None,
                 "error": action_error or None,
             },
         ))
diff --git a/frontend/src/api/tasks.ts b/frontend/src/api/tasks.ts
index 59513b0..ef8f6c7 100644
--- a/frontend/src/api/tasks.ts
+++ b/frontend/src/api/tasks.ts
@@ -11,10 +11,13 @@ export interface TaskEvent {
 export interface TaskResult {
   id: number
   device_id: number
+  device_ip: string | null
+  device_hostname: string | null
   status: string
   stdout: string | null
   stderr: string | null
   exit_code: number | null
+  data: Record<string, unknown> | null
   duration_ms: number | null
   executed_at: string | null
 }
diff --git a/frontend/src/hooks/useSSE.ts b/frontend/src/hooks/useSSE.ts
index 8e7ee1e..756bdf8 100644
--- a/frontend/src/hooks/useSSE.ts
+++ b/frontend/src/hooks/useSSE.ts
@@ -4,7 +4,16 @@ import { useAuthStore } from '../store/auth'
 
 interface SSEHandlers {
   onTaskEvent?: (data: { message: string; level: string; ts: string }) => void
-  onTaskResult?: (data: { device_id: number; device_ip: string; status: string; duration_ms: number }) => void
+  onTaskResult?: (data: {
+    device_id: number
+    device_ip: string
+    device_hostname: string | null
+    status: string
+    duration_ms: number
+    stdout: string | null
+    stderr: string | null
+    error: string | null
+  }) => void
   onTaskStatus?: (data: { status: string; total: number; ok: number; failed: number }) => void
 }
 
diff --git a/frontend/src/pages/TaskDetail.tsx b/frontend/src/pages/TaskDetail.tsx
index 13d7c9c..59c3362 100644
--- a/frontend/src/pages/TaskDetail.tsx
+++ b/frontend/src/pages/TaskDetail.tsx
@@ -1,7 +1,7 @@
-import { ArrowLeftOutlined, CheckCircleOutlined, CloseCircleOutlined, ExpandAltOutlined } from '@ant-design/icons'
+import { ArrowLeftOutlined, CheckCircleOutlined, CloseCircleOutlined, ExpandAltOutlined, LoadingOutlined } from '@ant-design/icons'
 import { Breadcrumb, Card, Col, Descriptions, Modal, Row, Spin, Table, Tag, Typography } from 'antd'
 import dayjs from 'dayjs'
-import { useEffect, useRef, useState } from 'react'
+import { useCallback, useEffect, useRef, useState } from 'react'
 import { useNavigate, useParams } from 'react-router-dom'
 import { useTask, type TaskResult } from '../api/tasks'
 import { TaskStatusBadge } from '../components/StatusBadge'
@@ -13,34 +13,76 @@ interface LogLine {
   level: string
 }
 
+interface DeviceResultState {
+  status: string
+  duration_ms: number | null
+  stdout: string | null
+  stderr: string | null
+  error: string | null
+  device_ip: string | null
+  device_hostname: string | null
+}
+
 const LEVEL_COLOR: Record<string, string> = {
   info:  '#52c41a',
   warn:  '#faad14',
   error: '#ff4d4f',
 }
 
+function renderOutput(r: TaskResult & Partial<DeviceResultState>) {
+  const text = r.stdout || r.stderr || (r.data as any)?.error || null
+  if (!text) return '—'
+  return (
+    <code style={{ fontSize: 12, whiteSpace: 'pre-wrap', wordBreak: 'break-all' }}>
+      {text.slice(0, 120)}{text.length > 120 ? '…' : ''}
+    </code>
+  )
+}
+
 export function TaskDetailPage() {
   const { id } = useParams<{ id: string }>()
   const navigate = useNavigate()
   const { data: task, isLoading } = useTask(id)
   const [log, setLog] = useState<LogLine[]>([])
-  const [deviceResults, setDeviceResults] = useState<Record<number, { status: string; duration_ms: number }>>({})
+  const [deviceResults, setDeviceResults] = useState<Record<number, DeviceResultState>>({})
   const logEndRef = useRef<HTMLDivElement>(null)
   const [stdoutModal, setStdoutModal] = useState<string | null>(null)
 
-  // Populate log from persisted events on load
+  // Deduplication key set for log lines (ts + message)
+  const seenLogKeys = useRef(new Set<string>())
+
+  const addLogLines = useCallback((lines: LogLine[]) => {
+    const newLines = lines.filter((l) => {
+      const key = `${l.ts}:${l.level}:${l.message}`
+      if (seenLogKeys.current.has(key)) return false
+      seenLogKeys.current.add(key)
+      return true
+    })
+    if (newLines.length > 0) setLog((prev) => [...prev, ...newLines])
+  }, [])
+
+  // Merge DB events on every task refetch (deduplication handles overlaps with SSE)
   useEffect(() => {
-    if (task?.events?.length) {
-      setLog(task.events.map((e) => ({ ts: e.created_at, message: e.message, level: e.level })))
-    }
-  }, [task?.id]) // only on initial load
+    if (!task?.events?.length) return
+    addLogLines(task.events.map((e) => ({ ts: e.created_at, message: e.message, level: e.level })))
+  }, [task?.events, addLogLines])
 
   // Live SSE updates
   useSSE(id, {
-    onTaskEvent: (data) =>
-      setLog((prev) => [...prev, { ts: data.ts, message: data.message, level: data.level }]),
+    onTaskEvent: (data) => addLogLines([{ ts: data.ts, message: data.message, level: data.level }]),
     onTaskResult: (data) =>
-      setDeviceResults((prev) => ({ ...prev, [data.device_id]: { status: data.status, duration_ms: data.duration_ms } })),
+      setDeviceResults((prev) => ({
+        ...prev,
+        [data.device_id]: {
+          status: data.status,
+          duration_ms: data.duration_ms,
+          stdout: data.stdout ?? null,
+          stderr: data.stderr ?? null,
+          error: data.error ?? null,
+          device_ip: data.device_ip ?? null,
+          device_hostname: data.device_hostname ?? null,
+        },
+      })),
   })
 
   // Auto-scroll log
@@ -55,60 +97,73 @@ export function TaskDetailPage() {
     if (!s) return '—'
     if (s.type === 'device') return `Устройство #${s.id}`
     if (s.type === 'object') return `Объект #${s.id}`
-    if (s.type === 'category') return `Категория: ${s.value}`
-    if (s.type === 'role') return `Роль: ${s.value}`
+    if (s.type === 'category') return `Категория: ${s.value ?? s.category}`
+    if (s.type === 'role') return `Роль: ${s.value ?? s.role}`
+    if (s.type === 'device_list') return `${s.ids?.length ?? 0} устройств`
+    if (s.type === 'filter') return 'Фильтр'
     return JSON.stringify(s)
   })()
 
   const resultColumns = [
     {
       title: 'Устройство',
-      dataIndex: 'device_id',
-      key: 'device_id',
-      render: (id: number) => `#${id}`,
+      key: 'device',
+      render: (_: unknown, r: TaskResult) => {
+        const live = deviceResults[r.device_id]
+        const ip = live?.device_ip ?? r.device_ip ?? null
+        const hostname = live?.device_hostname ?? r.device_hostname ?? null
+        if (ip) return hostname ? `${ip} (${hostname})` : ip
+        return `#${r.device_id}`
+      },
     },
     {
       title: 'Статус',
-      dataIndex: 'status',
       key: 'status',
-      render: (s: string) =>
-        s === 'success' ? (
-          <Tag icon={<CheckCircleOutlined />} color="success">Успешно</Tag>
-        ) : (
-          <Tag icon={<CloseCircleOutlined />} color="error">Ошибка</Tag>
-        ),
+      render: (_: unknown, r: TaskResult) => {
+        const s = deviceResults[r.device_id]?.status ?? r.status
+        if (s === 'success') return <Tag icon={<CheckCircleOutlined />} color="success">Успешно</Tag>
+        if (s === 'failed')  return <Tag icon={<CloseCircleOutlined />} color="error">Ошибка</Tag>
+        return <Tag icon={<LoadingOutlined />} color="processing">Ожидание</Tag>
+      },
     },
     {
       title: 'Время',
-      dataIndex: 'duration_ms',
       key: 'duration_ms',
-      render: (ms: number | null) => (ms != null ? `${ms}ms` : '—'),
+      render: (_: unknown, r: TaskResult) => {
+        const ms = deviceResults[r.device_id]?.duration_ms ?? r.duration_ms
+        return ms != null ? `${ms}ms` : '—'
+      },
     },
     {
       title: 'Вывод',
-      dataIndex: 'stdout',
-      key: 'stdout',
-      render: (s: string | null) => s ? (
-        <div style={{ display: 'flex', alignItems: 'flex-start', gap: 4 }}>
-          <code style={{ fontSize: 12, whiteSpace: 'pre-wrap', wordBreak: 'break-all', flex: 1 }}>
-            {s.slice(0, 120)}{s.length > 120 ? '…' : ''}
-          </code>
-          {s.length > 120 && (
-            <ExpandAltOutlined
-              style={{ color: '#1677ff', cursor: 'pointer', flexShrink: 0, marginTop: 2 }}
-              onClick={() => setStdoutModal(s)}
-            />
-          )}
-        </div>
-      ) : '—',
+      key: 'output',
+      render: (_: unknown, r: TaskResult) => {
+        const live = deviceResults[r.device_id]
+        const merged = live ? { ...r, ...live } : r
+        const text =
+          merged.stdout ||
+          merged.stderr ||
+          (merged as any).error ||
+          (r.data as any)?.error ||
+          null
+        if (!text) return '—'
+        return (
+          <div style={{ display: 'flex', alignItems: 'flex-start', gap: 4 }}>
+            <code style={{ fontSize: 12, whiteSpace: 'pre-wrap', wordBreak: 'break-all', flex: 1 }}>
+              {text.slice(0, 120)}{text.length > 120 ? '…' : ''}
+            </code>
+            {text.length > 120 && (
+              <ExpandAltOutlined
+                style={{ color: '#1677ff', cursor: 'pointer', flexShrink: 0, marginTop: 2 }}
+                onClick={() => setStdoutModal(text)}
+              />
+            )}
+          </div>
+        )
+      },
     },
   ]
 
-  const mergedResults = (task?.device_results ?? []).map((r: TaskResult) => ({
-    ...r,
-    ...(deviceResults[r.device_id] ?? {}),
-  }))
-
   return (
     <div>
       <Breadcrumb
@@ -126,7 +181,9 @@ export function TaskDetailPage() {
             <Descriptions.Item label="Статус">
               {task && <TaskStatusBadge status={task.status} />}
             </Descriptions.Item>
-            <Descriptions.Item label="Цель">{scopeLabel}</Descriptions.Item>
+            <Descriptions.Item label="Цель">
+              {task?.target_label ?? scopeLabel}
+            </Descriptions.Item>
             <Descriptions.Item label="Создана">
               {task && dayjs(task.created_at).format('DD.MM.YYYY HH:mm:ss')}
             </Descriptions.Item>
@@ -177,11 +234,11 @@ export function TaskDetailPage() {
           </Card>
         </Col>
 
-        {mergedResults.length > 0 && (
+        {task?.device_results && task.device_results.length > 0 && (
           <Col span={24}>
             <Card title="Результаты по устройствам" size="small">
               <Table
-                dataSource={mergedResults}
+                dataSource={task.device_results}
                 columns={resultColumns}
                 rowKey="id"
                 size="small"