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MediaPortal 1
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[solved by driver update of PCTV 461e] "Continuity error..." after updating from Windows 10 1909 to 20H2
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<blockquote data-quote="Andy_2639" data-source="post: 1279807" data-attributes="member: 161048"><p>Nevertheless, I appreciate your time and effort <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite24" alt="(y)" title="Thumbs Up (y)" loading="lazy" data-shortname="(y)" /> Thank you!</p><p></p><p></p><p></p><p>I have to correct myself: for realtime streaming, USB should use the Isochronous transfers mode ... <a href="https://en.wikipedia.org/wiki/USB#System_design" target="_blank">USB - Wikipedia</a></p><p>As far as I understand USB (up to 2.0), a USB device must not start talking by itself bust has to wait to be requested by the host and then can send a reply. So it needs constant polling for the TV card (or keyboard, mouse, although they should use the interrupt mode).</p><p></p><p>I tested with the current Intel HD Graphics Driver 15.40.47.5166 (from 2020-10-23): same results with the continuity errors on H.264 programs. MPEG2 programs couldn't be tested because of <a href="https://forum.team-mediaportal.com/threads/mediaportal-crash-and-restart-on-livetv-after-windows-update-sep-2020-driver-update-for-intel-hd-graphics-4600.140113/post-1279806" target="_blank">MediaPortal crash (and restart) on LiveTV after Windows Update (Sep 2020) driver update for Intel HD Graphics 4600</a></p><p></p><p>I also installed the Intel Microcode Update Microsoft provides: <a href="https://support.microsoft.com/en-us/help/4589212/intel-microcode-updates" target="_blank">https://support.microsoft.com/en-us/help/4589212/intel-microcode-updates</a> - no change.</p><p>Disabling Spectre mitigations also didn't help (on an earlier Windows 10 version, I got worse continuity errors after installing the microcode update for spectre and disabling the mitigation in Windows helped).</p><p></p><p>Also using a USB 2.0 USB port instead of an 3.x USB port didn't change anything.</p><p></p><p>Btw:</p><ul> <li data-xf-list-type="ul">TV card: PCTV DVB-S2 Stick (461e)</li> <li data-xf-list-type="ul">Mainboard: MSI Z97 Gaming 7</li> <li data-xf-list-type="ul">CPU and graphics adapter: Intel Core i7-4785T</li> </ul></blockquote><p></p>
[QUOTE="Andy_2639, post: 1279807, member: 161048"] Nevertheless, I appreciate your time and effort (y) Thank you! I have to correct myself: for realtime streaming, USB should use the Isochronous transfers mode ... [URL='https://en.wikipedia.org/wiki/USB#System_design']USB - Wikipedia[/URL] As far as I understand USB (up to 2.0), a USB device must not start talking by itself bust has to wait to be requested by the host and then can send a reply. So it needs constant polling for the TV card (or keyboard, mouse, although they should use the interrupt mode). I tested with the current Intel HD Graphics Driver 15.40.47.5166 (from 2020-10-23): same results with the continuity errors on H.264 programs. MPEG2 programs couldn't be tested because of [URL='https://forum.team-mediaportal.com/threads/mediaportal-crash-and-restart-on-livetv-after-windows-update-sep-2020-driver-update-for-intel-hd-graphics-4600.140113/post-1279806']MediaPortal crash (and restart) on LiveTV after Windows Update (Sep 2020) driver update for Intel HD Graphics 4600[/URL] I also installed the Intel Microcode Update Microsoft provides: [URL]https://support.microsoft.com/en-us/help/4589212/intel-microcode-updates[/URL] - no change. Disabling Spectre mitigations also didn't help (on an earlier Windows 10 version, I got worse continuity errors after installing the microcode update for spectre and disabling the mitigation in Windows helped). Also using a USB 2.0 USB port instead of an 3.x USB port didn't change anything. Btw: [LIST] [*]TV card: PCTV DVB-S2 Stick (461e) [*]Mainboard: MSI Z97 Gaming 7 [*]CPU and graphics adapter: Intel Core i7-4785T [/LIST] [/QUOTE]
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[solved by driver update of PCTV 461e] "Continuity error..." after updating from Windows 10 1909 to 20H2
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