Please turn on logging and post a log of the attempt to go into theater view. There is a lot of information logged about the video interfacing.
Done. I have a log file 'JRiver Log 2023-02-23 16-08-06.zip' but it is too big to write it here as txt. How can I send it to you?
Just a few lines...
0168127: 140386079073856: General: CTheaterViewBackgroundItemLoadThread::Thread: Load: /home/joaquim/.jriver/Media Center 30/Skins/Theater View/Themes/Default/Van Gogh - Starry Night.jpg
0168131: 140387359492032: General: CTheaterViewLayout::Layout: Navigation roller layout
0168131: 140387359492032: General: CTheaterViewLayout::Layout: View layout
0168131: 140387359492032: General: CTheaterViewLayout::Layout: Search layout
0168131: 140387359492032: General: CTheaterViewLayout::Layout: Statusbar layout
0168131: 140387359492032: General: CTheaterViewLayout::Layout: Setting focus
0168136: 140387359492032: General: CTheaterViewLayout::Layout: Updating pictures
0168136: 140387359492032: General: CTheaterViewLayout::Layout: Updating text
0168136: 140387359492032: General: CTheaterViewLayout::Layout: Finish (10 ms)
0168159: 140386745964096: General: COGLCore::ResizeInternal: Start
0168159: 140386745964096: General: COGLCore::ResizeInternal: Resizing GL Viewport to 2480x1408 (2480x1408 render size)
0168159: 140386745964096: General: JRMonitor::UpdateInfo: Start
0168159: 140386745964096: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0168159: 140386745964096: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0168159: 140386745964096: General: JRMonitor::UpdateInfo: Finish (0 ms)
0168159: 140386745964096: General: COGLCore::ResizeInternal: Setting up FBO for Anti-aliasing, Max Samples: 16, using 4
0168159: 140386745964096: General: COGLCore::ResizeInternal: Using FBO to render, state: 1
0168159: 140386745964096: General: COGLCore::ResizeInternal: Finish (0 ms)
0168162: 140387359492032: General: CMainUIWnd::ShowUI: Start
0168162: 140387359492032: General: CMainUIWnd::ShowUI: Finish (0 ms)
0168162: 140387359492032: General: CMainUIWnd::UpdateSizes: Start
0168162: 140387359492032: General: CMainUIWnd::UpdateSizes: Finish (0 ms)
0168162: 140387359492032: General: CMainUIWnd::ShowUI: Start
0168162: 140387359492032: General: CMainUIWnd::ShowUI: Recalculate views because update size or layout
0168162: 140387359492032: General: CMainUIWnd::ShowUI: Start
0168162: 140387359492032: General: CMainUIWnd::ShowUI: Finish (0 ms)
0168169: 140387359492032: General: CMainUIWnd::Resize: Start
0168169: 140387359492032: General: CMainUIWnd::ShowUI: Start
0168169: 140387359492032: General: CMainUIWnd::ShowUI: Finish (0 ms)
0168176: 140386079073856: General: CTheaterViewBackgroundItemLoadThread::Thread: Output
0168177: 140387359492032: General: CMainUIWnd::ShowUI: Start
0168177: 140387359492032: General: CMainUIWnd::ShowUI: Finish (0 ms)
0168177: 140387359492032: General: CMainUIWnd::Resize: Finish (8 ms)
0168178: 140387359492032: General: CMainUIWnd::ShowUI: Start
0168178: 140387359492032: General: CMainUIWnd::ShowUI: Finish (0 ms)
0168178: 140387359492032: General: CMainUIWnd::ShowUI: Finish (15 ms)
0168184: 140386079073856: General: CTheaterViewBackgroundItemLoadThread::Thread: Load: /home/joaquim/.jriver/Media Center 30/Skins/Theater View/Themes/Default/Van Gogh - Rhone.jpg
0168200: 140387359492032: General: CTheaterViewLayout::Layout: Start
0168201: 140387359492032: General: CTheaterViewLayout::Layout: Evaluating XML layout
0168201: 140387359492032: General: CTheaterViewLayout::Layout: Root roller layout
0168201: 140387359492032: General: CTheaterViewLayout::Layout: Navigation roller layout
0168201: 140387359492032: General: CTheaterViewLayout::Layout: View layout
0168201: 140387359492032: General: CTheaterViewLayout::Layout: Search layout
0168201: 140387359492032: General: CTheaterViewLayout::Layout: Statusbar layout
0168201: 140387359492032: General: CTheaterViewLayout::Layout: Setting focus
0168201: 140387359492032: General: CTheaterViewLayout::Layout: Updating pictures
0168201: 140387359492032: General: CTheaterViewLayout::Layout: Updating text
0168201: 140387359492032: General: CTheaterViewLayout::Layout: Finish (0 ms)
0168207: 140386745964096: General: COGLCore::ResizeInternal: Start
0168207: 140386745964096: General: COGLCore::ResizeInternal: Resizing GL Viewport to 2560x1440 (2560x1440 render size)
0168207: 140386745964096: General: JRMonitor::UpdateInfo: Start
0168207: 140386745964096: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0168207: 140386745964096: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0168207: 140386745964096: General: JRMonitor::UpdateInfo: Finish (0 ms)
0168207: 140386745964096: General: COGLCore::ResizeInternal: Setting up FBO for Anti-aliasing, Max Samples: 16, using 4
0168282: 140386745964096: General: COGLCore::ResizeInternal: Using FBO to render, state: 1
0168282: 140386745964096: General: COGLCore::ResizeInternal: Finish (74 ms)
0168302: 140386745964096: General: COGLCore::ResizeInternal: Start
0168302: 140386745964096: General: COGLCore::ResizeInternal: Resizing GL Viewport to 2560x1440 (2560x1440 render size)
0168302: 140386745964096: General: JRMonitor::UpdateInfo: Start
0168303: 140386745964096: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0168303: 140386745964096: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0168303: 140386745964096: General: JRMonitor::UpdateInfo: Finish (0 ms)
0168303: 140386745964096: General: COGLCore::ResizeInternal: Setting up FBO for Anti-aliasing, Max Samples: 16, using 4
0168303: 140386745964096: General: COGLCore::ResizeInternal: Using FBO to render, state: 1
0168303: 140386745964096: General: COGLCore::ResizeInternal: Finish (0 ms)
0168389: 140386745964096: General: COGLCore::ResizeInternal: Start
0168390: 140386745964096: General: COGLCore::ResizeInternal: Resizing GL Viewport to 2560x1440 (2560x1440 render size)
0168390: 140386745964096: General: JRMonitor::UpdateInfo: Start
0168390: 140386745964096: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0168390: 140386745964096: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0168390: 140386745964096: General: JRMonitor::UpdateInfo: Finish (0 ms)
0168391: 140386745964096: General: COGLCore::ResizeInternal: Setting up FBO for Anti-aliasing, Max Samples: 16, using 4
0168391: 140386745964096: General: COGLCore::ResizeInternal: Using FBO to render, state: 1
0168391: 140386745964096: General: COGLCore::ResizeInternal: Finish (1 ms)
0168431: 140387359492032: General: CTheaterViewLayout::Layout: Start
0168431: 140387359492032: General: CTheaterViewLayout::Layout: Evaluating XML layout
0168431: 140387359492032: General: CTheaterViewLayout::Layout: Root roller layout
0168432: 140387359492032: General: CTheaterViewLayout::Layout: Navigation roller layout
0168432: 140387359492032: General: CTheaterViewLayout::Layout: View layout
0168432: 140387359492032: General: CTheaterViewLayout::Layout: Search layout
0168432: 140387359492032: General: CTheaterViewLayout::Layout: Statusbar layout
0168432: 140387359492032: General: CTheaterViewLayout::Layout: Setting focus
0168432: 140387359492032: General: CTheaterViewLayout::Layout: Updating pictures
0168432: 140387359492032: General: CTheaterViewLayout::Layout: Updating text
0168432: 140387359492032: General: CTheaterViewLayout::Layout: Finish (1 ms)
0169026: 140387359492032: General: JRMonitor::UpdateInfo: Start
0169027: 140387359492032: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0169027: 140387359492032: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0169027: 140387359492032: General: JRMonitor::UpdateInfo: Finish (0 ms)
0170027: 140387359492032: General: JRMonitor::UpdateInfo: Start
0170028: 140387359492032: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0170028: 140387359492032: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0170028: 140387359492032: General: JRMonitor::UpdateInfo: Finish (0 ms)
0171030: 140387359492032: General: JRMonitor::UpdateInfo: Start
0171030: 140387359492032: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0171030: 140387359492032: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0171031: 140387359492032: General: JRMonitor::UpdateInfo: Finish (0 ms)
0172031: 140387359492032: General: JRMonitor::UpdateInfo: Start
0172031: 140387359492032: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0172031: 140387359492032: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0172032: 140387359492032: General: JRMonitor::UpdateInfo: Finish (0 ms)
0172802: 140387359492032: TV: CTVRecordingManager::Process: Start
0172804: 140387359492032: TV: CTVRecordingManager::PerformBackgroundTasks: Silent Days ago 0,0000571371128899, dialog days ago 0
0172841: 140387359492032: TV: CLoadEPGBaseWizardWnd::EPGProfile::SetOverallNextUpdateTime: Start
0172842: 140387359492032: TV: CLoadEPGBaseWizardWnd::EPGProfile::SetOverallNextUpdateTime: overall next load time , 0 Jan 1900 00:00:00 GMT
0172842: 140387359492032: TV: CLoadEPGBaseWizardWnd::EPGProfile::SetOverallNextUpdateTime: Finish (0 ms)
0172842: 140387359492032: TV: CTVRecordingManager::PerformBackgroundTasks: checking program cleanup timer. Last cleanup 0,0458620598988889 hours ago
0172842: 140387359492032: TV: CTVRecordingManager::Process: Finish (40 ms)
0173033: 140387359492032: General: JRMonitor::UpdateInfo: Start
0173033: 140387359492032: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0173033: 140387359492032: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0173033: 140387359492032: General: JRMonitor::UpdateInfo: Finish (0 ms)
0174036: 140387359492032: General: JRMonitor::UpdateInfo: Start
0174037: 140387359492032: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0174037: 140387359492032: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0174037: 140387359492032: General: JRMonitor::UpdateInfo: Finish (0 ms)
0175038: 140387359492032: General: JRMonitor::UpdateInfo: Start
0175039: 140387359492032: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0175039: 140387359492032: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0175039: 140387359492032: General: JRMonitor::UpdateInfo: Finish (0 ms)
0175808: 140386271999552: Sharing Plugins: CUDPSocketReader::Accept: Finish (20738 ms)
0175808: 140386056709696: Sharing Plugins: CHTTPListenerWorker::HandleConnection: Start
0175808: 140386056709696: Sharing Plugins: CHTTPListenerWorker::HandleRequest: UDP: 192.168.1.64: M-SEARCH:
http://239.255.255.250:1900*
0176037: 140386056709696: Sharing Plugins: CHTTPListenerWorker::HandleConnection: Finish (228 ms)
0176040: 140387359492032: General: JRMonitor::UpdateInfo: Start
0176040: 140387359492032: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0176040: 140387359492032: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0176040: 140387359492032: General: JRMonitor::UpdateInfo: Finish (0 ms)
0176041: 140386271999552: Sharing Plugins: CUDPSocketReader::Accept: Start
0176041: 140386271999552: Sharing Plugins: CUDPSocketReader::Accept: Description: CListenerBase::CListenerBase [UDP]
0176812: 140386271999552: Sharing Plugins: CUDPSocketReader::Accept: Finish (771 ms)
0176813: 140386056709696: Sharing Plugins: CHTTPListenerWorker::HandleConnection: Start
0176813: 140386056709696: Sharing Plugins: CHTTPListenerWorker::HandleRequest: UDP: 192.168.1.64: M-SEARCH:
http://239.255.255.250:1900*
0176955: 140386056709696: Sharing Plugins: CHTTPListenerWorker::HandleConnection: Finish (142 ms)
0176964: 140386271999552: Sharing Plugins: CUDPSocketReader::Accept: Start
0176964: 140386271999552: Sharing Plugins: CUDPSocketReader::Accept: Description: CListenerBase::CListenerBase [UDP]
0177042: 140387359492032: General: JRMonitor::UpdateInfo: Start
0177042: 140387359492032: General: JRMonitor::UpdateInfo: Screen width = 2560 height = 1440 x = 0, y = 0, rrmode = 35
0177042: 140387359492032: General: JRMonitor::UpdateInfo: 1 non-zero size screens found
0177042: 140387359492032: General: JRMonitor::UpdateInfo: Finish (0 ms)
0177803: 140387359492032: TV: CTVRecordingManager::Process: Start
0177806: 140387359492032: TV: CTVRecordingManager::PerformBackgroundTasks: Silent Days ago 0,0000559701729799, dialog days ago 0
0177820: 140386271999552: Sharing Plugins: CUDPSocketReader::Accept: Finish (855 ms)