<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> If this doesn't work I suspect the converter is really blocking/damaging the EDID information. The official NVIDIA driver is willing to fall back to default modes, but this fall-back was handled less gracefully on nouveau last time I checked. You might be able to use the xrandr tool to manually add a mode for the display. Forgive me for not knowing the exact syntax, but from what I recall you can use cvt to generate a modeline and copy-paste the parameters into an xrandr command to add, then use a second xrandr command to enable the display either in mirror mode or positioned relative to another display. If you're lucky, that mode corresponds well enough with what the projector will accept to just work. <div class="moz-cite-prefix">Op 01-09-17 om 18:01 schreef Ilia Mirkin: </div> <blockquote type="cite" cite="mid:CAKb7Uvg37iJGwzCZZyJHzSRNb=KHAtDjHutzdWB=gjr0JTe9bQ@mail.gmail.com"> <pre wrap="">Are you running a v4.12-based kernel? If so, update to v4.13-rcN or integrate <a class="moz-txt-link-freetext" href="https://github.com/skeggsb/linux/commit/13a86519202c5d119d83640d6f781f3181205d2c">https://github.com/skeggsb/linux/commit/13a86519202c5d119d83640d6f781f3181205d2c</a> into your kernel build. On Fri, Sep 1, 2017 at 12:50 PM, Marko Schuetz-Schmuck <a class="moz-txt-link-rfc2396E" href="mailto:MarkoSchuetz@web.de"><MarkoSchuetz@web.de></a> wrote: </pre> <blockquote type="cite"> <pre wrap="">I want to connect to an InFocus projector that sits behind a Panduit VGA adapter. I use a Thinkpad P51 with a mini display-port to VGA converter. The laptop runs Manjaro and has the video-hybrid-intel-nouveau-prime installed and it works with other monitors. For some reason it does not detect the projector that is connected through the Panduit. The keyboard shortcut to switch monitor configuration says "No External Display". xrandr reports only the built-in screen. I talked to the technician for the room installation and he told me that he had seen this before on a Ubuntu machine and that switching to the proprietary nvidia driver solved that problem. For various reasons I'd rather not switch to that driver. I also found some lines with "DRM: DDC responded, but no EDID for DP-1" in them from around the time I tried connecting to the projector. Could they be related? Is there some setting or configuration that can help in this case? Best regards, Marko _______________________________________________ Nouveau mailing list <a class="moz-txt-link-abbreviated" href="mailto:Nouveau@lists.freedesktop.org">Nouveau@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="https://lists.freedesktop.org/mailman/listinfo/nouveau">https://lists.freedesktop.org/mailman/listinfo/nouveau</a> </pre> </blockquote> <pre wrap="">_______________________________________________ Nouveau mailing list <a class="moz-txt-link-abbreviated" href="mailto:Nouveau@lists.freedesktop.org">Nouveau@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="https://lists.freedesktop.org/mailman/listinfo/nouveau">https://lists.freedesktop.org/mailman/listinfo/nouveau</a> </pre> </blockquote> </body> </html>