Why do I get a black window when creating a whole desktop on remote?












-1















https://xpra.org/trac/wiki/Usage#Forwardingawholedesktop




Xpra normally forwards just the windows of the application you are
interested in. If you want to forward a full desktop instead
(including its start menu, background, task bar, etc...)
use the
"start-desktop" mode:



xpra start-desktop --start-child=fluxbox


Notes: you can start a window manager of your choice (here fluxbox) or
none at all..




I have two Lubuntu 18.04 laptops. I want to start a new session on one from the other and access it from the other



First start by running the window manager:



$ xpra start-desktop ssh:t@olive:400 --start-child=openbox
2019-03-12 19:39:57,590 Xpra gtk2 client version 2.1.3-r17247M 64-bit
2019-03-12 19:39:57,592 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:39:57,594 Warning: failed to import opencv:
2019-03-12 19:39:57,594 No module named cv2
2019-03-12 19:39:57,594 webcam forwarding is disabled
Warning: failed to import GStreamer 1.x:
Namespace Gst not available
2019-03-12 19:39:59,304 Error: failed to query sound subsystem:
2019-03-12 19:39:59,305 query did not return any data
2019-03-12 19:40:00,690 Warning: vendor 'Intel Open Source Technology Center' is greylisted,
2019-03-12 19:40:00,691 you may want to turn off OpenGL if you encounter bugs
2019-03-12 19:40:00,714 PyOpenGL warning: missing accelerate module
2019-03-12 19:40:00,816 OpenGL enabled with Mesa DRI Mobile Intel® GM45 Express Chipset
2019-03-12 19:40:00,914 keyboard settings: rules=evdev, model=pc105, layout=us
2019-03-12 19:40:00,918 desktop size is 1440x900 with 1 screen:
2019-03-12 19:40:00,919 :0.0 (381x238 mm - DPI: 96x96) workarea: 1440x876
2019-03-12 19:40:00,920 monitor 1 (303x190 mm - DPI: 120x120)
t@olive's password:
Warning: cannot use the system proxy for 'start-desktop' subcommand,
failed to connect to '/run/xpra/system':
[Errno 2] No such file or directory
Entering daemon mode; any further errors will be reported to:
/run/user/1000/xpra/:400.log
InitException: failed to identify the new server display!
xpra initialization error:
failed to identify the new server display!
2019-03-12 19:40:26,066 Error: failed to receive anything, not an xpra server?
2019-03-12 19:40:26,066 could also be the wrong protocol, username, password or port
2019-03-12 19:40:26,066 Connection lost
2019-03-12 19:40:26,068 Error: printing disabled:
2019-03-12 19:40:26,073 No module named cups


Then connect to it:



$ xpra attach ssh:t@olive:400
2019-03-12 19:42:53,514 Xpra gtk2 client version 2.1.3-r17247M 64-bit
2019-03-12 19:42:53,514 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:42:53,516 Warning: failed to import opencv:
2019-03-12 19:42:53,517 No module named cv2
2019-03-12 19:42:53,517 webcam forwarding is disabled
Warning: failed to import GStreamer 1.x:
Namespace Gst not available
2019-03-12 19:42:55,275 Error: failed to query sound subsystem:
2019-03-12 19:42:55,276 query did not return any data
2019-03-12 19:42:56,640 Warning: vendor 'Intel Open Source Technology Center' is greylisted,
2019-03-12 19:42:56,641 you may want to turn off OpenGL if you encounter bugs
2019-03-12 19:42:56,669 PyOpenGL warning: missing accelerate module
2019-03-12 19:42:56,782 OpenGL enabled with Mesa DRI Mobile Intel® GM45 Express Chipset
2019-03-12 19:42:56,886 keyboard settings: rules=evdev, model=pc105, layout=us
2019-03-12 19:42:56,892 desktop size is 1440x900 with 1 screen:
2019-03-12 19:42:56,893 :0.0 (381x238 mm - DPI: 96x96) workarea: 1440x876
2019-03-12 19:42:56,893 monitor 1 (303x190 mm - DPI: 120x120)
t@olive's password:
2019-03-12 19:43:05,014 Xpra X11 desktop server version 2.1.3-r17247 64-bit
2019-03-12 19:43:05,014 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:43:05,015 enabled remote logging
2019-03-12 19:43:05,019 Attached to ssh/t@olive/:400 (press Control-C to detach)

2019-03-12 19:43:38,621 window-close event on desktop or shadow window, disconnecting
2019-03-12 19:43:38,623 Error: printing disabled:
2019-03-12 19:43:38,625 No module named cups


But it gives a completely black window. What shall I do?



enter image description here



If I start the GUI session (instead of window manager) on remote, by xpra start-desktop ssh:t@olive:400 --start-child=lxsession, it doesn't give me start menu, background, task bar, etc), but a very vague login small window. After I login, the same black window as above.



enter image description here



Thanks.










share|improve this question




















  • 1





    It would be much better if you follow the instructions of guide at your beginner stage.

    – 炸鱼薯条德里克
    24 mins ago











  • Could you kindly tell me how I did not follow it, or what specifically I shall follow?

    – Tim
    24 mins ago


















-1















https://xpra.org/trac/wiki/Usage#Forwardingawholedesktop




Xpra normally forwards just the windows of the application you are
interested in. If you want to forward a full desktop instead
(including its start menu, background, task bar, etc...)
use the
"start-desktop" mode:



xpra start-desktop --start-child=fluxbox


Notes: you can start a window manager of your choice (here fluxbox) or
none at all..




I have two Lubuntu 18.04 laptops. I want to start a new session on one from the other and access it from the other



First start by running the window manager:



$ xpra start-desktop ssh:t@olive:400 --start-child=openbox
2019-03-12 19:39:57,590 Xpra gtk2 client version 2.1.3-r17247M 64-bit
2019-03-12 19:39:57,592 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:39:57,594 Warning: failed to import opencv:
2019-03-12 19:39:57,594 No module named cv2
2019-03-12 19:39:57,594 webcam forwarding is disabled
Warning: failed to import GStreamer 1.x:
Namespace Gst not available
2019-03-12 19:39:59,304 Error: failed to query sound subsystem:
2019-03-12 19:39:59,305 query did not return any data
2019-03-12 19:40:00,690 Warning: vendor 'Intel Open Source Technology Center' is greylisted,
2019-03-12 19:40:00,691 you may want to turn off OpenGL if you encounter bugs
2019-03-12 19:40:00,714 PyOpenGL warning: missing accelerate module
2019-03-12 19:40:00,816 OpenGL enabled with Mesa DRI Mobile Intel® GM45 Express Chipset
2019-03-12 19:40:00,914 keyboard settings: rules=evdev, model=pc105, layout=us
2019-03-12 19:40:00,918 desktop size is 1440x900 with 1 screen:
2019-03-12 19:40:00,919 :0.0 (381x238 mm - DPI: 96x96) workarea: 1440x876
2019-03-12 19:40:00,920 monitor 1 (303x190 mm - DPI: 120x120)
t@olive's password:
Warning: cannot use the system proxy for 'start-desktop' subcommand,
failed to connect to '/run/xpra/system':
[Errno 2] No such file or directory
Entering daemon mode; any further errors will be reported to:
/run/user/1000/xpra/:400.log
InitException: failed to identify the new server display!
xpra initialization error:
failed to identify the new server display!
2019-03-12 19:40:26,066 Error: failed to receive anything, not an xpra server?
2019-03-12 19:40:26,066 could also be the wrong protocol, username, password or port
2019-03-12 19:40:26,066 Connection lost
2019-03-12 19:40:26,068 Error: printing disabled:
2019-03-12 19:40:26,073 No module named cups


Then connect to it:



$ xpra attach ssh:t@olive:400
2019-03-12 19:42:53,514 Xpra gtk2 client version 2.1.3-r17247M 64-bit
2019-03-12 19:42:53,514 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:42:53,516 Warning: failed to import opencv:
2019-03-12 19:42:53,517 No module named cv2
2019-03-12 19:42:53,517 webcam forwarding is disabled
Warning: failed to import GStreamer 1.x:
Namespace Gst not available
2019-03-12 19:42:55,275 Error: failed to query sound subsystem:
2019-03-12 19:42:55,276 query did not return any data
2019-03-12 19:42:56,640 Warning: vendor 'Intel Open Source Technology Center' is greylisted,
2019-03-12 19:42:56,641 you may want to turn off OpenGL if you encounter bugs
2019-03-12 19:42:56,669 PyOpenGL warning: missing accelerate module
2019-03-12 19:42:56,782 OpenGL enabled with Mesa DRI Mobile Intel® GM45 Express Chipset
2019-03-12 19:42:56,886 keyboard settings: rules=evdev, model=pc105, layout=us
2019-03-12 19:42:56,892 desktop size is 1440x900 with 1 screen:
2019-03-12 19:42:56,893 :0.0 (381x238 mm - DPI: 96x96) workarea: 1440x876
2019-03-12 19:42:56,893 monitor 1 (303x190 mm - DPI: 120x120)
t@olive's password:
2019-03-12 19:43:05,014 Xpra X11 desktop server version 2.1.3-r17247 64-bit
2019-03-12 19:43:05,014 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:43:05,015 enabled remote logging
2019-03-12 19:43:05,019 Attached to ssh/t@olive/:400 (press Control-C to detach)

2019-03-12 19:43:38,621 window-close event on desktop or shadow window, disconnecting
2019-03-12 19:43:38,623 Error: printing disabled:
2019-03-12 19:43:38,625 No module named cups


But it gives a completely black window. What shall I do?



enter image description here



If I start the GUI session (instead of window manager) on remote, by xpra start-desktop ssh:t@olive:400 --start-child=lxsession, it doesn't give me start menu, background, task bar, etc), but a very vague login small window. After I login, the same black window as above.



enter image description here



Thanks.










share|improve this question




















  • 1





    It would be much better if you follow the instructions of guide at your beginner stage.

    – 炸鱼薯条德里克
    24 mins ago











  • Could you kindly tell me how I did not follow it, or what specifically I shall follow?

    – Tim
    24 mins ago
















-1












-1








-1








https://xpra.org/trac/wiki/Usage#Forwardingawholedesktop




Xpra normally forwards just the windows of the application you are
interested in. If you want to forward a full desktop instead
(including its start menu, background, task bar, etc...)
use the
"start-desktop" mode:



xpra start-desktop --start-child=fluxbox


Notes: you can start a window manager of your choice (here fluxbox) or
none at all..




I have two Lubuntu 18.04 laptops. I want to start a new session on one from the other and access it from the other



First start by running the window manager:



$ xpra start-desktop ssh:t@olive:400 --start-child=openbox
2019-03-12 19:39:57,590 Xpra gtk2 client version 2.1.3-r17247M 64-bit
2019-03-12 19:39:57,592 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:39:57,594 Warning: failed to import opencv:
2019-03-12 19:39:57,594 No module named cv2
2019-03-12 19:39:57,594 webcam forwarding is disabled
Warning: failed to import GStreamer 1.x:
Namespace Gst not available
2019-03-12 19:39:59,304 Error: failed to query sound subsystem:
2019-03-12 19:39:59,305 query did not return any data
2019-03-12 19:40:00,690 Warning: vendor 'Intel Open Source Technology Center' is greylisted,
2019-03-12 19:40:00,691 you may want to turn off OpenGL if you encounter bugs
2019-03-12 19:40:00,714 PyOpenGL warning: missing accelerate module
2019-03-12 19:40:00,816 OpenGL enabled with Mesa DRI Mobile Intel® GM45 Express Chipset
2019-03-12 19:40:00,914 keyboard settings: rules=evdev, model=pc105, layout=us
2019-03-12 19:40:00,918 desktop size is 1440x900 with 1 screen:
2019-03-12 19:40:00,919 :0.0 (381x238 mm - DPI: 96x96) workarea: 1440x876
2019-03-12 19:40:00,920 monitor 1 (303x190 mm - DPI: 120x120)
t@olive's password:
Warning: cannot use the system proxy for 'start-desktop' subcommand,
failed to connect to '/run/xpra/system':
[Errno 2] No such file or directory
Entering daemon mode; any further errors will be reported to:
/run/user/1000/xpra/:400.log
InitException: failed to identify the new server display!
xpra initialization error:
failed to identify the new server display!
2019-03-12 19:40:26,066 Error: failed to receive anything, not an xpra server?
2019-03-12 19:40:26,066 could also be the wrong protocol, username, password or port
2019-03-12 19:40:26,066 Connection lost
2019-03-12 19:40:26,068 Error: printing disabled:
2019-03-12 19:40:26,073 No module named cups


Then connect to it:



$ xpra attach ssh:t@olive:400
2019-03-12 19:42:53,514 Xpra gtk2 client version 2.1.3-r17247M 64-bit
2019-03-12 19:42:53,514 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:42:53,516 Warning: failed to import opencv:
2019-03-12 19:42:53,517 No module named cv2
2019-03-12 19:42:53,517 webcam forwarding is disabled
Warning: failed to import GStreamer 1.x:
Namespace Gst not available
2019-03-12 19:42:55,275 Error: failed to query sound subsystem:
2019-03-12 19:42:55,276 query did not return any data
2019-03-12 19:42:56,640 Warning: vendor 'Intel Open Source Technology Center' is greylisted,
2019-03-12 19:42:56,641 you may want to turn off OpenGL if you encounter bugs
2019-03-12 19:42:56,669 PyOpenGL warning: missing accelerate module
2019-03-12 19:42:56,782 OpenGL enabled with Mesa DRI Mobile Intel® GM45 Express Chipset
2019-03-12 19:42:56,886 keyboard settings: rules=evdev, model=pc105, layout=us
2019-03-12 19:42:56,892 desktop size is 1440x900 with 1 screen:
2019-03-12 19:42:56,893 :0.0 (381x238 mm - DPI: 96x96) workarea: 1440x876
2019-03-12 19:42:56,893 monitor 1 (303x190 mm - DPI: 120x120)
t@olive's password:
2019-03-12 19:43:05,014 Xpra X11 desktop server version 2.1.3-r17247 64-bit
2019-03-12 19:43:05,014 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:43:05,015 enabled remote logging
2019-03-12 19:43:05,019 Attached to ssh/t@olive/:400 (press Control-C to detach)

2019-03-12 19:43:38,621 window-close event on desktop or shadow window, disconnecting
2019-03-12 19:43:38,623 Error: printing disabled:
2019-03-12 19:43:38,625 No module named cups


But it gives a completely black window. What shall I do?



enter image description here



If I start the GUI session (instead of window manager) on remote, by xpra start-desktop ssh:t@olive:400 --start-child=lxsession, it doesn't give me start menu, background, task bar, etc), but a very vague login small window. After I login, the same black window as above.



enter image description here



Thanks.










share|improve this question
















https://xpra.org/trac/wiki/Usage#Forwardingawholedesktop




Xpra normally forwards just the windows of the application you are
interested in. If you want to forward a full desktop instead
(including its start menu, background, task bar, etc...)
use the
"start-desktop" mode:



xpra start-desktop --start-child=fluxbox


Notes: you can start a window manager of your choice (here fluxbox) or
none at all..




I have two Lubuntu 18.04 laptops. I want to start a new session on one from the other and access it from the other



First start by running the window manager:



$ xpra start-desktop ssh:t@olive:400 --start-child=openbox
2019-03-12 19:39:57,590 Xpra gtk2 client version 2.1.3-r17247M 64-bit
2019-03-12 19:39:57,592 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:39:57,594 Warning: failed to import opencv:
2019-03-12 19:39:57,594 No module named cv2
2019-03-12 19:39:57,594 webcam forwarding is disabled
Warning: failed to import GStreamer 1.x:
Namespace Gst not available
2019-03-12 19:39:59,304 Error: failed to query sound subsystem:
2019-03-12 19:39:59,305 query did not return any data
2019-03-12 19:40:00,690 Warning: vendor 'Intel Open Source Technology Center' is greylisted,
2019-03-12 19:40:00,691 you may want to turn off OpenGL if you encounter bugs
2019-03-12 19:40:00,714 PyOpenGL warning: missing accelerate module
2019-03-12 19:40:00,816 OpenGL enabled with Mesa DRI Mobile Intel® GM45 Express Chipset
2019-03-12 19:40:00,914 keyboard settings: rules=evdev, model=pc105, layout=us
2019-03-12 19:40:00,918 desktop size is 1440x900 with 1 screen:
2019-03-12 19:40:00,919 :0.0 (381x238 mm - DPI: 96x96) workarea: 1440x876
2019-03-12 19:40:00,920 monitor 1 (303x190 mm - DPI: 120x120)
t@olive's password:
Warning: cannot use the system proxy for 'start-desktop' subcommand,
failed to connect to '/run/xpra/system':
[Errno 2] No such file or directory
Entering daemon mode; any further errors will be reported to:
/run/user/1000/xpra/:400.log
InitException: failed to identify the new server display!
xpra initialization error:
failed to identify the new server display!
2019-03-12 19:40:26,066 Error: failed to receive anything, not an xpra server?
2019-03-12 19:40:26,066 could also be the wrong protocol, username, password or port
2019-03-12 19:40:26,066 Connection lost
2019-03-12 19:40:26,068 Error: printing disabled:
2019-03-12 19:40:26,073 No module named cups


Then connect to it:



$ xpra attach ssh:t@olive:400
2019-03-12 19:42:53,514 Xpra gtk2 client version 2.1.3-r17247M 64-bit
2019-03-12 19:42:53,514 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:42:53,516 Warning: failed to import opencv:
2019-03-12 19:42:53,517 No module named cv2
2019-03-12 19:42:53,517 webcam forwarding is disabled
Warning: failed to import GStreamer 1.x:
Namespace Gst not available
2019-03-12 19:42:55,275 Error: failed to query sound subsystem:
2019-03-12 19:42:55,276 query did not return any data
2019-03-12 19:42:56,640 Warning: vendor 'Intel Open Source Technology Center' is greylisted,
2019-03-12 19:42:56,641 you may want to turn off OpenGL if you encounter bugs
2019-03-12 19:42:56,669 PyOpenGL warning: missing accelerate module
2019-03-12 19:42:56,782 OpenGL enabled with Mesa DRI Mobile Intel® GM45 Express Chipset
2019-03-12 19:42:56,886 keyboard settings: rules=evdev, model=pc105, layout=us
2019-03-12 19:42:56,892 desktop size is 1440x900 with 1 screen:
2019-03-12 19:42:56,893 :0.0 (381x238 mm - DPI: 96x96) workarea: 1440x876
2019-03-12 19:42:56,893 monitor 1 (303x190 mm - DPI: 120x120)
t@olive's password:
2019-03-12 19:43:05,014 Xpra X11 desktop server version 2.1.3-r17247 64-bit
2019-03-12 19:43:05,014 running on Linux Ubuntu 18.04 bionic
2019-03-12 19:43:05,015 enabled remote logging
2019-03-12 19:43:05,019 Attached to ssh/t@olive/:400 (press Control-C to detach)

2019-03-12 19:43:38,621 window-close event on desktop or shadow window, disconnecting
2019-03-12 19:43:38,623 Error: printing disabled:
2019-03-12 19:43:38,625 No module named cups


But it gives a completely black window. What shall I do?



enter image description here



If I start the GUI session (instead of window manager) on remote, by xpra start-desktop ssh:t@olive:400 --start-child=lxsession, it doesn't give me start menu, background, task bar, etc), but a very vague login small window. After I login, the same black window as above.



enter image description here



Thanks.







lxde openbox lubuntu xpra






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 25 mins ago







Tim

















asked 58 mins ago









TimTim

27.7k78264483




27.7k78264483








  • 1





    It would be much better if you follow the instructions of guide at your beginner stage.

    – 炸鱼薯条德里克
    24 mins ago











  • Could you kindly tell me how I did not follow it, or what specifically I shall follow?

    – Tim
    24 mins ago
















  • 1





    It would be much better if you follow the instructions of guide at your beginner stage.

    – 炸鱼薯条德里克
    24 mins ago











  • Could you kindly tell me how I did not follow it, or what specifically I shall follow?

    – Tim
    24 mins ago










1




1





It would be much better if you follow the instructions of guide at your beginner stage.

– 炸鱼薯条德里克
24 mins ago





It would be much better if you follow the instructions of guide at your beginner stage.

– 炸鱼薯条德里克
24 mins ago













Could you kindly tell me how I did not follow it, or what specifically I shall follow?

– Tim
24 mins ago







Could you kindly tell me how I did not follow it, or what specifically I shall follow?

– Tim
24 mins ago












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