Hi, I have printer Canon Pixma 4250 connected by wifi, It works well in any app but not in gwenview.
Terminal says:
przemek@przemek-HP:~$ gwenview
kf5.kiconthemes: "Theme tree: (Bryza)"
Invalid pixmap specified.
QTimeLine::setDuration: cannot set duration <= 0
Invalid pixmap specified.
QTimeLine::setDuration: cannot set duration <= 0
Invalid pixmap specified.
QTimeLine::setDuration: cannot set duration <= 0
Invalid pixmap specified.
QTimeLine::setDuration: cannot set duration <= 0
kf5.kservice.sycoca: Trying to open ksycoca from "/home/przemek/.cache/ksycoca5"
Invalid pixmap specified.
QTimeLine::setDuration: cannot set duration <= 0
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/010656_600.jpg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/010656_600.jpg"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/109971032.jpg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/109971032.jpg"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/10E78852D6AC6F75417498E71B4FCF61.jpg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/10E78852D6AC6F75417498E71B4FCF61.jpg"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/CAM_6758.jpg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/CAM_6758.jpg"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/Dz.184.png" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/Dz.184.png"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/Dz.184.svg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/Dz.184.svg"
Could not create a temporary file.
Could not create a temporary file.
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/I-etap.svg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/I-etap.svg"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/images.jpeg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/images.jpeg"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/ryc1.png" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/ryc1.png"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/ryc1.svg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/ryc1.svg"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/timthumb.php.jpeg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/timthumb.php.jpeg"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/z69-502x372.jpg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/z69-502x372.jpg"
Could not create a temporary file.
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/zdjecie,600,234642,20111128,pole.jpg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/zdjecie,600,234642,20111128,pole.jpg"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/zdjecie,600,307589,20120814,pole-uprawne.jpg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/zdjecie,600,307589,20120814,pole-uprawne.jpg"
Thumbnail for "file:///home/przemek/Pobrane/Karta informacyjna/zrzut ekranu1.jpeg" does not contain correct image size information
Could not get a valid KFileMetaInfo instance for "file:///home/przemek/Pobrane/Karta informacyjna/zrzut ekranu1.jpeg"
org.kde.kactivities.lib.core: Creating ResourceInstance: empty for now
Invalid pixmap specified.
No frame loaded
QPainter::begin(): Returned false
QPainter::viewport: Painter not active
alignment= 132
QPainter::setViewport: Painter not active
QPainter::setWindow: Painter not activeregards,