Please don't top post. Again. On 28/12/14 01:09, Heng Zhou wrote: > I'm sorry I'm getting more and more confused. To run RandR, i.e., > xrandr, I have to use xpra to hold the whole desktop This sounds like you have it backwards, but whatever. > (if xpra forwards only application, the xpra window can resize at the > client side. Yes it can), but the http://xpra.org/trac/wiki/Usage > webpage requires using Xnest as a nested X11 server. I did not run > Xdummy or Xvfb. Xnest (or Xephyr) runs nested inside another X11 server, which can either be Xdummy or Xvfb. > Actually I don't know how to run Xdummy -- there is a command "xvfb" > in ubuntu, but there is no command of Xdummy or xdummy. So I don't > understand your reply "Xdummy supports RandR, Xvfb does not, hence the > error.". I only run Xnest. No you don't. Xpra runs a display server (either Xdummy or Xvfb) and you start Xnest in it. See the wiki page on Xdummy. > Do you mean Xnest is equivalent to Xdummy or Xvfb? No. > For the former, Xdummy doesn't work on ubuntu so RANDR doesn't work. > For the latter, Xvfb does not support GLX so metacity and all other > OpenGL applications do not work. Am I right? If I am, which one is > Xnest equivalent to? Xpra supports OpenGL with Xdummy only. AFAIK, even with Xdummy, you will not be able to get OpenGL with Xnest or Xephyr, which you need for running a full desktop. > And as for Xdummy, does it run automatically after I run xpra, so it > is expected that a virtual frame buffer, or a virtual graphics card > exists on display :100 after xpra start :100, so I can run glxgears on > a remote Red Hat machine (on display :100), e.g., Amazon EC2 Red Hat > instance, without any trouble like those I encountered on ubuntu, > right? Hopefully my understanding is right. Yes, xpra starts the virtual display server when you run "xpra start". > Gnome Panel is the only desktop I can use on Amazon EC2 instance, > which appears only under Xnest. If I run Xephyr, the xpra window is > black. There are bugs anywhere in Linux world. Xephyr works fine here.
Antoine > > > On Sat, Dec 27, 2014 at 12:35 PM, Antoine Martin > <[email protected] <mailto:[email protected]>> wrote: > > Please don't top post. > > On 28/12/14 00:25, Heng Zhou wrote: >> Thanks for the reply. So RandR only works at the server side >> (because window manage runs at server side); resizing at client >> side does not work, right? > Sort of. RandR has nothing to do with the window manager. > You can't resize client-side because the xpra protocol does not > support it yet. >> But after I run the following commands at the server side: >> >> (1) xpra start :100 >> (2) sudo DISPLAY=:100 Xnest +extension RANDR :200 -ac -geometry >> 800x600+24 & >> (3) Use Xpra Launcher to connect to the server. A 800x600 Xpra >> window comes out. >> (4) sudo DISPLAY=:200 metacity & >> There is an error: "Xlib: extension "RANDR" missing on display >> ":200"." >> (5) sudo DISPLAY=:200 gnome-settings-daemon & >> (6) sudo DISPLAY=:200 gnome-panel & >> The GNOME Panel desktop environment appears >> (7) sudo DISPLAY=:200 xrandr --size 1024x768 > Xdummy supports RandR, Xvfb does not, hence the error. > > And don't run everything root... >> >> , I received an error: "RandR extension missing" and the size of >> the Xpra window containing the whole desktop is unchanged. > Like the error says... >> >> I don't know what is the matter. I also tried "sudo DISPLAY=:100 >> xrandr --size 1024x768" but nothing is changed. It seems that the >> RANDR extension is not enabled on display :200 (or :100? I don't >> know), but how should I enable it? > By using Xdummy instead of Xvfb. >> I have already include the +extension RANDR option in step (2). >> Should I install some other packages? The server is running >> ubuntu 14.04. > And here is your problem again. >> >> Looking forward to your further clarification. > Let's just make it crystal clear: Ubuntu is creating all these > problems, either move away from it or be prepared to solve those > problems on your own. > > Cheers > Antoine > > > > >> >> On Sat, Dec 27, 2014 at 10:25 AM, Antoine Martin >> <[email protected] <mailto:[email protected]>> wrote: >> >> On 27/12/14 22:18, Heng Zhou wrote: >> > Hi, >> > >> > I can display a whole desktop using the instruction in >> > http://xpra.org/trac/wiki/Usage >> >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__xpra.org_trac_wiki_Usage&d=AwMDaQ&c=TqceLeU8_c9CVUat-eLTFu19-lyGiWSvB_skZXlxt8Q&r=P1ABBvTuGPmJbUz5MdDh1bh-eAJtxjX6QuAJblLMVsI&m=1BG4F5DZ3vJ_ekEvx6ohg66_W_6vaZGYLu45aaV4Xhg&s=CRmtgmFewhBiPiCYnV5HnSDle3JhNjU5JfjiTc-s4EQ&e=>. >> Now I hope I can miximize the window >> > containing the desktop if I double click the title bar of >> the xpra window, >> > just like miximizing a normal window in Windows. >> "Double-click-to-maximize" is going to be desktop environment >> specific, >> often mapped as a shortcut for the maximize button. >> In this case, it is not possible because the window has a >> fixed size, >> and for that reason the maximize button should be disabled too. >> > The same webpage says that >> > "you can resize the desktop using the standard "randr" >> desktop tools (and >> > not by resizing the window at present)", so I think this is >> the approach to >> > accomplish what I want. >> randr is the X11 protocol, you may use any tool that uses it, ie: >> xrandr -s 1024x768 >> "man xrandr" for details >> > But after search the internet, I still have no idea >> > how to do it. Could you please give me a step by step >> configuration to >> > accomplish miximizing the window containing the whole >> desktop by double >> > click? >> It cannot be done at present because the window has a fixed size. >> There is a ticket for that: >> http://xpra.org/trac/ticket/530 >> >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__xpra.org_trac_ticket_530&d=AwMDaQ&c=TqceLeU8_c9CVUat-eLTFu19-lyGiWSvB_skZXlxt8Q&r=P1ABBvTuGPmJbUz5MdDh1bh-eAJtxjX6QuAJblLMVsI&m=1BG4F5DZ3vJ_ekEvx6ohg66_W_6vaZGYLu45aaV4Xhg&s=IJoQJL9km27EPxWH7M0euPBBCMIJHubITJeczUGllN8&e=> >> It doesn't look hard to implement, I just haven't had the time. >> > Thank you very much! >> Cheers >> Antoine >> >> _______________________________________________ >> shifter-users mailing list >> [email protected] >> <mailto:[email protected]> >> http://lists.devloop.org.uk/mailman/listinfo/shifter-users >> >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.devloop.org.uk_mailman_listinfo_shifter-2Dusers&d=AwMDaQ&c=TqceLeU8_c9CVUat-eLTFu19-lyGiWSvB_skZXlxt8Q&r=P1ABBvTuGPmJbUz5MdDh1bh-eAJtxjX6QuAJblLMVsI&m=1BG4F5DZ3vJ_ekEvx6ohg66_W_6vaZGYLu45aaV4Xhg&s=fjfodKw_jha4_0QDvURC--gFJOJBI67BuMACVYe7-38&e=> >> >> > > _______________________________________________ shifter-users mailing list [email protected] http://lists.devloop.org.uk/mailman/listinfo/shifter-users
