task bar disappeared.

English Install/Boot/Login
1

Hi there I have a Sony Vaio VPCEB4S1E installed openSuse 12.1 KDE 32bit.
I’ve just experienced that task bar disappeared as the snapshot below.
http://s15.postimage.org/iwho7i7kr/snapshot2.png

I’ve tried on a terminal:


vaio-erik@linux-dabd:~> kquitapp plasma-desktop
vaio-erik@linux-dabd:~> plasma-desktop

responds:

QDBusObjectPath: invalid path ""
QGraphicsLinearLayout::insertItem: cannot insert null item
QGraphicsLinearLayout::insertItem: cannot insert null item
Object::connect: No such slot AbstractItemView::iconSettingsChanged(int)
Could not resolve property : linearGradient4504
plasma-desktop(13496)/kdecore (services) KServicePrivate::init: The desktop entry file  "/usr/share/kde4/services/sysinfo.protocol"  has Type= "Application"  but no Exec line 

Object::connect: No such signal QDBusAbstractInterface::Changed()
link XMLID_34_ hasn't been detected!
link XMLID_34_ hasn't been detected!
link XMLID_36_ hasn't been detected!
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
QGridLayoutEngine::addItem: Cell (1, 1) already taken
QGraphicsLinearLayout::removeAt: invalid index 0
Object::connect: No such signal RemoteWirelessNetwork::activationStateChanged(Knm::InterfaceConnection::ActivationState, Knm::InterfaceConnection::ActivationState)
QGridLayoutEngine::addItem: Cell (0, 1) already taken
Object::connect: No such signal RemoteWirelessNetwork::activationStateChanged(Knm::InterfaceConnection::ActivationState, Knm::InterfaceConnection::ActivationState)
QGridLayoutEngine::addItem: Cell (0, 1) already taken
Object::connect: No such signal RemoteWirelessNetwork::activationStateChanged(Knm::InterfaceConnection::ActivationState, Knm::InterfaceConnection::ActivationState)
QGridLayoutEngine::addItem: Cell (0, 1) already taken
Object::connect: No such signal RemoteWirelessNetwork::activationStateChanged(Knm::InterfaceConnection::ActivationState, Knm::InterfaceConnection::ActivationState)
QGridLayoutEngine::addItem: Cell (0, 1) already taken
QGraphicsLinearLayout::insertItem: cannot insert null item
QGraphicsLinearLayout::insertItem: cannot insert null item
plasma-desktop(13496)/kio (KDirWatch) KDirWatchPrivate::removeEntry: doesn't know "" 
QImage::scaled: Image is a null image
QImage::scaled: Image is a null image
Object::connect: No such slot AbstractItemView::iconSettingsChanged(int)
vaio-erik@linux-dabd:~> X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)                                                           
  Resource id:  0x4a004b2                                                                    
X Error: BadWindow (invalid Window parameter) 3                                              
  Major opcode: 3 (X_GetWindowAttributes)                                                    
  Resource id:  0x0                                                                          
X Error: BadDrawable (invalid Pixmap or Window parameter) 9                                  
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)                                                      
  Resource id:  0x4a004b2                                                                    
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 8 (RenderComposite)
  Resource id:  0x4a004b2
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004b2
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004b2
X Error: BadAlloc (insufficient resources for operation) 11
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0xb3
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004b6
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004b6
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 62 (X_CopyArea)
  Resource id:  0x4a004b6
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004b6
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 5 (RenderChangePicture)
  Resource id:  0x4a004b6
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004b6
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004b6
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 7 (RenderFreePicture)
  Resource id:  0x4a004b6
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x4a004b9
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0xb6facff4
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004b9
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 8 (RenderComposite)
  Resource id:  0x4a004b9
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004b9
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004b9
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004bd
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004bd
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 62 (X_CopyArea)
  Resource id:  0x4a004bd
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004bd
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 5 (RenderChangePicture)
  Resource id:  0x4a004bd
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004bd
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004bd
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 7 (RenderFreePicture)
  Resource id:  0x4a004bd
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x4a004c0
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0xb6facff4
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004c0
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 8 (RenderComposite)
  Resource id:  0x4a004c0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004c0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004c0
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004c4
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004c4
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 62 (X_CopyArea)
  Resource id:  0x4a004c4
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004c4
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 5 (RenderChangePicture)
  Resource id:  0x4a004c4
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004c4
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004c4
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 7 (RenderFreePicture)
  Resource id:  0x4a004c4
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x4a004c7
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0xb6facff4
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004c7
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 8 (RenderComposite)
  Resource id:  0x4a004c7
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004c7
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004c7
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004cb
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004cb
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 62 (X_CopyArea)
  Resource id:  0x4a004cb
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004cb
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 5 (RenderChangePicture)
  Resource id:  0x4a004cb
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004cb
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004cb
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 7 (RenderFreePicture)
  Resource id:  0x4a004cb
2

continues…


X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x4a004ce
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0xb6facff4
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004ce
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 8 (RenderComposite)
  Resource id:  0x4a004ce
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004ce
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004ce
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004d2
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004d2
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 62 (X_CopyArea)
  Resource id:  0x4a004d2
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004d2
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 5 (RenderChangePicture)
  Resource id:  0x4a004d2
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004d2
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004d2
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 7 (RenderFreePicture)
  Resource id:  0x4a004d2
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x4a004d5
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0xb6facff4
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004d5
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 8 (RenderComposite)
  Resource id:  0x4a004d5
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004d5
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004d5
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004d9
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004d9
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 62 (X_CopyArea)
  Resource id:  0x4a004d9
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004d9
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 5 (RenderChangePicture)
  Resource id:  0x4a004d9
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004d9
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004d9
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 7 (RenderFreePicture)
  Resource id:  0x4a004d9
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x4a004dc
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0xb6facff4
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004dc
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 8 (RenderComposite)
  Resource id:  0x4a004dc
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004dc
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004dc
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004e0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004e0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 62 (X_CopyArea)
  Resource id:  0x4a004e0
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004e0
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 5 (RenderChangePicture)
  Resource id:  0x4a004e0
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004e0
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004e0
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 7 (RenderFreePicture)
  Resource id:  0x4a004e0
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x4a004e3
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0xb6facff4
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004e3
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 8 (RenderComposite)
  Resource id:  0x4a004e3
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004e3
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004e3
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    156 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x4a004e7
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 55 (X_CreateGC)
  Resource id:  0x4a004e7
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 62 (X_CopyArea)
  Resource id:  0x4a004e7
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004e7
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 5 (RenderChangePicture)
  Resource id:  0x4a004e7
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004e7
X Error: BadGC (invalid GC parameter) 13
  Major opcode: 60 (X_FreeGC)
  Resource id:  0x4a004e7
X Error: RenderBadPicture (invalid Picture parameter) 178
  Extension:    156 (RENDER)
  Minor opcode: 7 (RenderFreePicture)
  Resource id:  0x4a004e7
vaio-erik@linux-dabd:~> plasma-desktop(13496)/plasma StatusNotifierItemSource::refreshCallback: DBusMenu disabled for this application 
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::setCompositionMode: Painter not active
QPainter::end: Painter not active, aborted
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::setCompositionMode: Painter not active
QPainter::end: Painter not active, aborted
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::setCompositionMode: Painter not active
QPainter::end: Painter not active, aborted
QColor::setNamedColor: Unknown color name '4294967295'
QTextHtmlParser::applyAttributes: Unknown color name '4294967295'
plasma-desktop(13496)/plasma StatusNotifierItemSource::refreshCallback: DBusMenu disabled for this application 
plasma-desktop(13496)/plasma StatusNotifierItemSource::refreshCallback: DBusMenu disabled for this application

I can handle without my taskbar for now… But I should solve it…
Any idea?

3

added task manager into the task bar, and solved.

4

On 2012-02-29 16:06, erinct wrote:
>
> added task manager into the task bar, and solved.

You should say how, for those coming in the future reading this.

–
Cheers / Saludos,

Carlos E. R.
(from 11.4 x86_64 “Celadon” at Telcontar)

5

On 29/02/12 21:33, Carlos E. R. wrote:
> On 2012-02-29 16:06, erinct wrote:
>>
>> added task manager into the task bar, and solved.
>
> You should say how, for those coming in the future reading this.
>

The taskbar/manager is a widget.
It’s as simple as adding it to the panel

Right click > Unlock widgets
Right click panel > Add widgets
Search for taskmanager > double click it
Move in place
Done
Right click > Lock widgets