yes, I want to rotate the desktop like xrandr -o left , but the display device only show the signal is lost Jonny Bowes <jonnybowes2000@googlemail.com>编写： I think what he means is that he is trying to rotate the actual desktop not a video. I'm not exactly sure about the problem that you are facing but it could be hardware related. Jonnybowes... <div class="gmail_quote">On 10 Apr 2015 17:15, "Hartmut Haase" <<a href="mailto:hha4491@web.de">hha4491@web.de</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi 雍兴辉, <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> My video card is Intel integrated GMA3600, when I choose to rotate 90 degrees in "Display Setting", the display show the message "the Signal is Lost". what can I do to support it? </blockquote> do I get you right? You have a video that you want to rotate 90°? If yes, e. g. vlc can do it. If no I don't understand at all what you want. -- Viele Grüße, Hartmut Hungerhilfe: <a href="http://www.thehungersite.com" target="_blank">http://www.thehungersite.com</a> Ohne Zensur suchen: <a href="http://suche.amnesty-bergedorf.de" target="_blank">http://suche.amnesty-bergedorf.de</a> Googeln ohne Google: <a href="https://www.startpage.com/deu" target="_blank">https://www.startpage.com/deu</a> Das heutige Motto: Wer lächelt, statt zu toben, ist immer der Stärkere. -- xubuntu-users mailing list <a href="mailto:xubuntu-users@lists.ubuntu.com" target="_blank">xubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/xubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/xubuntu-users</a> </blockquote></div>