Hi, Whenever an xpra client connects to a server I want to resize the dummy xserver to match the client's resolution exactly. The server is started with: Xorg +extension RANDR +extension RENDER -config xorg-dummy.conf I calculate a modeline using: http://xtiming.sourceforge.net/cgi-bin/xtiming.pl (say 1128x738@50) and add it: xrandr --newmode "1128x738@50" 54.17 1128 1160 1360 1392 738 753 759 775 Then I add it to the "default" output: xrandr --addmode "default" "1128x738@50" Then I try to actually set it: xrandr -s "1128x738@50" And get this error message: "Failed to change the screen configuration!"
Running the same commands against a real X11 server sort-of worked in that it did set the resolution (I think - I got a black screen because my LCD did not support it). Interestingly, it would not let me switch back to the original resolution from a virtual terminal (same "Failed to change..." error), I had to add a "sleep 5" to delay it and switch back to the X11 vt to make it work. Could it be something similar with my dummy instance? vt related? How do I fix it? Or, what am I doing wrong? I have tried doing this via the API rather than the xrandr commandline and did not fare any better: * XRRAllocModeInfo to allocate a new mode * XRRCreateMode to create it with calculations similar to xtimings * XRRAddOutputMode on the only output found using XRRGetScreenResourcesCurrent Strangely, the new mode is not listed by XRRSizes() And calling XRRSetScreenSize actually crashed the whole X11 server!.. Thanks Antoine _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
