Bug 386995 - Black Screen
Summary: Black Screen
Status: CONFIRMED
Alias: None
Product: kamoso
Classification: Applications
Component: general (show other bugs)
Version: 3.2
Platform: Neon Linux
: NOR normal
Target Milestone: ---
Assignee: Aleix Pol
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-11-16 18:23 UTC by varlesh
Modified: 2018-02-13 15:24 UTC (History)
4 users (show)

See Also:
Latest Commit:
Version Fixed In:


Attachments
lsusb -v -d 0458:708f (29.18 KB, text/plain)
2017-11-16 18:23 UTC, varlesh
Details

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Description varlesh 2017-11-16 18:23:19 UTC
Created attachment 108899 [details]
lsusb -v -d 0458:708f

Always show black screen on window. Webcam worked and record, but i see always black screen.

----------LOG:----------
kamoso
Playing device changed "/dev/video0"
Couldn't find "purpose/types/ExportPluginType.json"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/DefaultFileDialog.qml:210:25: QML ListView: Binding loop detected for property "model"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/DefaultFileDialog.qml:210:25: QML ListView: Binding loop detected for property "model"
new gamma 137
new gamma 138
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Slider.qml:204:5: QML RangeModel: Binding loop detected for property "value"
New saturation  100
New contrast  100
new hue -15


OS: KDE Neon User Edition (based on Ubuntu 16.04)
Kamoso: 3.2.4-0neon+16.04+xenial+build5
Plasma: 5.11.3
KDE Frameworks: 5.40.0
Qt 5.9.1

Webcam Genius Facecam 1000X
Comment 1 G 2018-01-19 07:06:00 UTC
Same problem here.  Cameras work and records video, but Kamoso is just a black screen.  Pictures are visible for a fraction of a second after they taken as they are shrunken from the main screen area down to the bottom right during the save animation.

VLC is able to show video from both capture devices (/dev/video0 and /dev/video1), so it's definitely a Kamoso (or Qt5) issue.


Package: kamoso 3.2.4-0neon+16.04+xenial+build5 amd64
KDE neon User Edition 5.11 (based on Ubuntu Xenial)
Plasma: 5.11.5
KDE Frameworks: 5.42.0
Qt: 5.9.3

Front and Rear Cameras:
Bus 002 Device 003: ID 04ca:7027 Lite-On Technology Corp. 
Bus 001 Device 005: ID 04ca:7028 Lite-On Technology Corp. 

Console output:
$ kamoso 
Playing device changed "/dev/video1"
Cannot initialize model with data QJsonObject() . missing: QJsonValue(string, "urls")
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/DefaultFileDialog.qml:210:25: QML ListView: Binding loop detected for property "model"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/DefaultFileDialog.qml:210:25: QML ListView: Binding loop detected for property "model"
new gamma 102
new gamma 103
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Slider.qml:204:5: QML RangeModel: Binding loop detected for property "value"
New saturation  100
New contrast  100
Playing device changed "/dev/video0"
new gamma 105
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Slider.qml:204:5: QML RangeModel: Binding loop detected for property "value"                                                                                                                                         
playing device "/dev/video0" 4
Comment 2 Patrick Silva 2018-02-05 14:10:53 UTC
I also get a black screen using flatpak version from kdeapps repository.
Version from Arch Linux repositories works fine on the same computer/system.
Comment 3 Baltasar 2018-02-12 17:35:43 UTC
Same problem en KDE Neon with Plasma 5.12 LTS
Comment 4 Jonathan Riddell 2018-02-13 15:24:42 UTC
I confirm this, black space where camera output should be on my Slimbook II user edition.  Works fine on my thinkpad dev edition