the same thing happens to me when I run Caspar 2.3.0 LTS (without changing anything in the original configuration file) :
[2020-12-02 08:28:22.212] [info] ############################################################################
[2020-12-02 08:28:22.212] [info] CasparCG Server is distributed by the Swedish Broadcasting Corporation (SVT)
[2020-12-02 08:28:22.212] [info] under the GNU General Public License GPLv3 or higher.
[2020-12-02 08:28:22.212] [info] Please see LICENSE.TXT for details.
[2020-12-02 08:28:22.212] [info] http://www.casparcg.com/
[2020-12-02 08:28:22.212] [info] ############################################################################
[2020-12-02 08:28:22.212] [info] Starting CasparCG Video and Graphics Playout Server 2.3.0 a4a7c053 Dev
[2020-12-02 08:28:22.466] [info] Initializing OpenGL Device.
[2020-12-02 08:28:22.467] [info] Initialized OpenGL 4.5.0 NVIDIA 452.39 NVIDIA Corporation
[2020-12-02 08:28:22.469] [info] Initialized ffmpeg module.
[2020-12-02 08:28:22.469] [info] Initialized oal module.
[2020-12-02 08:28:22.469] [info] Initialized decklink module.
[2020-12-02 08:28:22.470] [info] Initialized screen module.
[2020-12-02 08:28:22.470] [info] Initialized newtek module.
[1202/082822.491:ERROR:gpu_process_transport_factory.cc(990)] Lost UI shared context.
[2020-12-02 08:28:22.572] [info] Initialized html module.
[2020-12-02 08:28:22.572] [info] Flash support is disabled
[2020-12-02 08:28:22.572] [info] Initialized flash module.
[2020-12-02 08:28:22.574] [info] Initialized bluefish module.
[2020-12-02 08:28:22.574] [info] Initialized image module.
[2020-12-02 08:28:22.574] [info] "C:/CASPAR\CasparCG Server 2.3.0\casparcg.config":
[2020-12-02 08:28:22.574] [info] -----------------------------------------
[2020-12-02 08:28:22.574] [info] <?xml version="1.0" encoding="utf-8"?>
[2020-12-02 08:28:22.574] [info] <configuration>
[2020-12-02 08:28:22.574] [info] <paths>
[2020-12-02 08:28:22.574] [info] <media-path>media/</media-path>
[2020-12-02 08:28:22.574] [info] <log-path>log/</log-path>
[2020-12-02 08:28:22.574] [info] <data-path>data/</data-path>
[2020-12-02 08:28:22.574] [info] <template-path>template/</template-path>
[2020-12-02 08:28:22.574] [info] </paths>
[2020-12-02 08:28:22.574] [info] <lock-clear-phrase>secret</lock-clear-phrase>
[2020-12-02 08:28:22.574] [info] <channels>
[2020-12-02 08:28:22.574] [info] <channel>
[2020-12-02 08:28:22.574] [info] <video-mode>720p5000</video-mode>
[2020-12-02 08:28:22.574] [info] <consumers>
[2020-12-02 08:28:22.574] [info] <screen/>
[2020-12-02 08:28:22.574] [info] <system-audio/>
[2020-12-02 08:28:22.574] [info] </consumers>
[2020-12-02 08:28:22.574] [info] </channel>
[2020-12-02 08:28:22.574] [info] </channels>
[2020-12-02 08:28:22.574] [info] <controllers>
[2020-12-02 08:28:22.574] [info] <tcp>
[2020-12-02 08:28:22.574] [info] <port>5250</port>
[2020-12-02 08:28:22.574] [info] <protocol>AMCP</protocol>
[2020-12-02 08:28:22.574] [info] </tcp>
[2020-12-02 08:28:22.574] [info] </controllers>
[2020-12-02 08:28:22.574] [info] <amcp>
[2020-12-02 08:28:22.574] [info] <media-server>
[2020-12-02 08:28:22.574] [info] <host>localhost</host>
[2020-12-02 08:28:22.574] [info] <port>8000</port>
[2020-12-02 08:28:22.574] [info] </media-server>
[2020-12-02 08:28:22.574] [info] </amcp>
[2020-12-02 08:28:22.574] [info] </configuration>
[2020-12-02 08:28:22.574] [info] -----------------------------------------
[2020-12-02 08:28:22.580] [info] Initialized OpenGL Accelerated GPU Image Mixer for channel 1
[2020-12-02 08:28:22.581] [info] video_channel[1|720p5000] Successfully Initialized.
[2020-12-02 08:28:22.583] [warning] Screen consumer [1|720p5000] Could not find display settings for screen-index: 0
[2020-12-02 08:28:22.583] [info] Screen consumer [1|720p5000] Initialized.
[2020-12-02 08:28:22.607] [info] oal[1|720p5000] Initialized.
[2020-12-02 08:28:22.607] [info] Initialized channels.
[2020-12-02 08:28:22.608] [info] Initialized controllers.
[2020-12-02 08:28:22.608] [info] Initialized osc.
this comes from Chrome driver as DidiKunz points out in its link.
But I don’t use WebGL for my templates (I don’t use HTML templates)
if I add
<html>
<enable-gpu>true</enable-gpu>
</html>
the message disappears :
[2020-12-02 08:29:45.124] [info] ############################################################################
[2020-12-02 08:29:45.125] [info] CasparCG Server is distributed by the Swedish Broadcasting Corporation (SVT)
[2020-12-02 08:29:45.125] [info] under the GNU General Public License GPLv3 or higher.
[2020-12-02 08:29:45.125] [info] Please see LICENSE.TXT for details.
[2020-12-02 08:29:45.125] [info] http://www.casparcg.com/
[2020-12-02 08:29:45.125] [info] ############################################################################
[2020-12-02 08:29:45.125] [info] Starting CasparCG Video and Graphics Playout Server 2.3.0 a4a7c053 Dev
[2020-12-02 08:29:45.370] [info] Initializing OpenGL Device.
[2020-12-02 08:29:45.371] [info] Initialized OpenGL 4.5.0 NVIDIA 452.39 NVIDIA Corporation
[2020-12-02 08:29:45.429] [info] D3D11: Selected adapter: NVIDIA Quadro P2000
[2020-12-02 08:29:45.429] [info] D3D11: Selected feature level: 45312
[2020-12-02 08:29:45.435] [info] Initialized ffmpeg module.
[2020-12-02 08:29:45.435] [info] Initialized oal module.
[2020-12-02 08:29:45.435] [info] Initialized decklink module.
[2020-12-02 08:29:45.435] [info] Initialized screen module.
[2020-12-02 08:29:45.435] [info] Initialized newtek module.
[2020-12-02 08:29:45.545] [info] Initialized html module.
[2020-12-02 08:29:45.545] [info] Flash support is disabled
[2020-12-02 08:29:45.545] [info] Initialized flash module.
[2020-12-02 08:29:45.548] [info] Initialized bluefish module.
[2020-12-02 08:29:45.548] [info] Initialized image module.
[2020-12-02 08:29:45.548] [info] "C:/CASPAR\CasparCG Server 2.3.0\casparcg.config":
[2020-12-02 08:29:45.548] [info] -----------------------------------------
[2020-12-02 08:29:45.548] [info] <?xml version="1.0" encoding="utf-8"?>
[2020-12-02 08:29:45.548] [info] <configuration>
[2020-12-02 08:29:45.548] [info] <paths>
[2020-12-02 08:29:45.548] [info] <media-path>media/</media-path>
[2020-12-02 08:29:45.548] [info] <log-path>log/</log-path>
[2020-12-02 08:29:45.548] [info] <data-path>data/</data-path>
[2020-12-02 08:29:45.548] [info] <template-path>template/</template-path>
[2020-12-02 08:29:45.548] [info] </paths>
[2020-12-02 08:29:45.548] [info] <lock-clear-phrase>secret</lock-clear-phrase>
[2020-12-02 08:29:45.548] [info] <html>
[2020-12-02 08:29:45.548] [info] <enable-gpu>true</enable-gpu>
[2020-12-02 08:29:45.548] [info] </html>
[2020-12-02 08:29:45.548] [info] <channels>
[2020-12-02 08:29:45.548] [info] <channel>
[2020-12-02 08:29:45.548] [info] <video-mode>720p5000</video-mode>
[2020-12-02 08:29:45.548] [info] <consumers>
[2020-12-02 08:29:45.548] [info] <screen/>
[2020-12-02 08:29:45.548] [info] <system-audio/>
[2020-12-02 08:29:45.548] [info] </consumers>
[2020-12-02 08:29:45.548] [info] </channel>
[2020-12-02 08:29:45.548] [info] </channels>
[2020-12-02 08:29:45.548] [info] <controllers>
[2020-12-02 08:29:45.548] [info] <tcp>
[2020-12-02 08:29:45.548] [info] <port>5250</port>
[2020-12-02 08:29:45.548] [info] <protocol>AMCP</protocol>
[2020-12-02 08:29:45.548] [info] </tcp>
[2020-12-02 08:29:45.548] [info] </controllers>
[2020-12-02 08:29:45.548] [info] <amcp>
[2020-12-02 08:29:45.548] [info] <media-server>
[2020-12-02 08:29:45.548] [info] <host>localhost</host>
[2020-12-02 08:29:45.548] [info] <port>8000</port>
[2020-12-02 08:29:45.548] [info] </media-server>
[2020-12-02 08:29:45.548] [info] </amcp>
[2020-12-02 08:29:45.548] [info] </configuration>
[2020-12-02 08:29:45.548] [info] -----------------------------------------
[2020-12-02 08:29:45.555] [info] Initialized OpenGL Accelerated GPU Image Mixer for channel 1
[2020-12-02 08:29:45.555] [info] video_channel[1|720p5000] Successfully Initialized.
[2020-12-02 08:29:45.556] [warning] Screen consumer [1|720p5000] Could not find display settings for screen-index: 0
[2020-12-02 08:29:45.557] [info] Screen consumer [1|720p5000] Initialized.
[2020-12-02 08:29:45.588] [info] oal[1|720p5000] Initialized.
[2020-12-02 08:29:45.588] [info] Initialized channels.
[2020-12-02 08:29:45.589] [info] Initialized controllers.
[2020-12-02 08:29:45.589] [info] Initialized osc.
can be offered an option to deactivate the loading of the Chrome driver when it is not being used ?
as to activate / deactivate the flash player :
it's a suggestion, the option does not exist
<html>
<enabled>true/false</enabled>
</html>