Re: running openGL application remotely using ssh -X and cygwin/x ,extension NV-GLX missing on display localhost:10.0
On 28/04/2014 22:02, Linda Walsh wrote: Jon TURNEY wrote: Yes, this should work. *But*, I'm pretty sure it doesn't anymore since the Xgl extension that was used to transport the openGL commands between client/server was removed from xorg's Xserver. You seem to be confusing Xgl (an X server implementation) and GLX (an X protocol extension). While they do contain the same letters in a different order, they are very different things. AIGLX doesn't work with client's native openGL drives when the DISPLAY isn't local. Instead, it sends full-frame-buffer updates to simulate what would be happening -- something that appears to work correctly for small OpenGL windows. But is entirely 'faked' (not really remote openGL that used the Server's acceleration Hardware. Which would give you unaccelerated frame-buffer updates to simulate the effect. Not quite what used to be available. This is also totally wrong. You are (more or less) describing how mesa's direct software rendering works (which is usually the default path for remote displays) which is completely different to AIGLX (where GL commands are sent via the GLX protocol to the X server and rendered using acceleration there) So, again, please stop spreading misinformation. I'm sure there are bugs in and limitations with OpenGL and the XWin server, but if you have a problem, please don't hijack someone else's thread, but report it in sufficient detail for me to try to reproduce it. -- Jon TURNEY Volunteer Cygwin/X X Server maintainer -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: running openGL application remotely using ssh -X and cygwin/x ,extension NV-GLX missing on display localhost:10.0
Jon TURNEY wrote: Yes, this should work. *But*, I'm pretty sure it doesn't anymore since the Xgl extension that was used to transport the openGL commands between client/server was removed from xorg's Xserver. From wikipedia: Xgl was a display server implementation supporting the X Window System protocol designed to take advantage of modern graphics cards via their OpenGL drivers, layered on top of OpenGL via glitz. It supported hardware acceleration of all X, OpenGL and XVideo applications and graphical effects by a compositing window manager such as Compiz or Beryl. The project was started by David Reveman of Novell and first released on January 2, 2006. It was removed[1] from the X.org server in favor of AIGLX on June 12, 2008. --- AIGLX doesn't work with client's native openGL drives when the DISPLAY isn't local. Instead, it sends full-frame-buffer updates to simulate what would be happening -- something that appears to work correctly for small OpenGL windows. But is entirely 'faked' (not really remote openGL that used the Server's acceleration Hardware. I'm not entirely clear if the 'extension �NV-GLX� missing' message is a warning or an error, but according to the internet it seems to be due to having a Nvidia libGL installed on the remote machine, so if all else fails you might look at uninstalling the Nvidia proprietary driver and libGL, and using mesa instead. Which would give you unaccelerated frame-buffer updates to simulate the effect. Not quite what used to be available. Note: this isn't a cygwin specific problem. i.e. people running xorg's server on a linux box have the same problem -- accelerated+remote 3D graphics seems to be dead. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: running openGL application remotely using ssh -X and cygwin/x ,extension NV-GLX missing on display localhost:10.0
I know for a fact that when I ssh from my Ubuntu partition to the remote machine the application works without crashing. However, when I use windows 8 and Cygwin X the crash occurs for the same application. I will install the debugging tools and report my findings to you. Thanks for looking into this! -Octavian On Sat, Apr 26, 2014 at 7:52 AM, Jon TURNEY jon.tur...@dronecode.org.uk wrote: On 24/04/2014 23:45, Biris, Octavian wrote: I am attempting to run an opengl application remptely to a ubuntu linux machine from my windows 8 machine. To do so I start the cygwin console, call startxwin. Running glxinfo | grep OpenGL returns the vendor of my graphics card, NVIDIA. glxinfo |grep OpenGL OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: GeForce GTX 580/PCIe/SSE2 OpenGL version string: 1.4 (4.4.0) OpenGL extensions: Then I ssh on the ubuntu machine using -X -C as the parameters. When attempting to start the application the console reads extension NV-GLX missing on display localhost:10.0. Afterwards, the cygwin/X server crashes and I have to restart it.I attached the log from /var/log/Xwin/XWin.0.log Thanks for the bug report. I'm afraid that the log doesn't contain enough information for me to identify the cause of the crash. Can you install the xorg-server-debuginfo package and try again? I also have been working on a tool to automate sending better crash information using minidumps. If you would like to try that, download it from [1] (anonymous ftp) and put it into /usr/bin and reproduce your crash again. [1] ftp://cygwin.com/pub/cygwinx/x86_64/xorg_cygwin_crash_reporter_gui.exe Does cygwin/x support running OpenGL applications remotely? Am I missing something? Do I have to install the mesa-utils libraries on the remote machine? Yes, this should work. I'm not entirely clear if the 'extension NV-GLX missing' message is a warning or an error, but according to the internet it seems to be due to having a Nvidia libGL installed on the remote machine, so if all else fails you might look at uninstalling the Nvidia proprietary driver and libGL, and using mesa instead. -- Jon TURNEY Volunteer Cygwin/X X Server maintainer -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: running openGL application remotely using ssh -X and cygwin/x ,extension NV-GLX missing on display localhost:10.0
On 24/04/2014 23:45, Biris, Octavian wrote: I am attempting to run an opengl application remptely to a ubuntu linux machine from my windows 8 machine. To do so I start the cygwin console, call startxwin. Running glxinfo | grep OpenGL returns the vendor of my graphics card, NVIDIA. glxinfo |grep OpenGL OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: GeForce GTX 580/PCIe/SSE2 OpenGL version string: 1.4 (4.4.0) OpenGL extensions: Then I ssh on the ubuntu machine using -X -C as the parameters. When attempting to start the application the console reads extension NV-GLX missing on display localhost:10.0. Afterwards, the cygwin/X server crashes and I have to restart it.I attached the log from /var/log/Xwin/XWin.0.log Thanks for the bug report. I'm afraid that the log doesn't contain enough information for me to identify the cause of the crash. Can you install the xorg-server-debuginfo package and try again? I also have been working on a tool to automate sending better crash information using minidumps. If you would like to try that, download it from [1] (anonymous ftp) and put it into /usr/bin and reproduce your crash again. [1] ftp://cygwin.com/pub/cygwinx/x86_64/xorg_cygwin_crash_reporter_gui.exe Does cygwin/x support running OpenGL applications remotely? Am I missing something? Do I have to install the mesa-utils libraries on the remote machine? Yes, this should work. I'm not entirely clear if the 'extension “NV-GLX” missing' message is a warning or an error, but according to the internet it seems to be due to having a Nvidia libGL installed on the remote machine, so if all else fails you might look at uninstalling the Nvidia proprietary driver and libGL, and using mesa instead. -- Jon TURNEY Volunteer Cygwin/X X Server maintainer -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
running openGL application remotely using ssh -X and cygwin/x ,extension NV-GLX missing on display localhost:10.0
Hello there! I am attempting to run an opengl application remptely to a ubuntu linux machine from my windows 8 machine. To do so I start the cygwin console, call startxwin. Running glxinfo | grep OpenGL returns the vendor of my graphics card, NVIDIA. glxinfo |grep OpenGL OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: GeForce GTX 580/PCIe/SSE2 OpenGL version string: 1.4 (4.4.0) OpenGL extensions: Then I ssh on the ubuntu machine using -X -C as the parameters. When attempting to start the application the console reads extension NV-GLX missing on display localhost:10.0. Afterwards, the cygwin/X server crashes and I have to restart it.I attached the log from /var/log/Xwin/XWin.0.log Does cygwin/x support running OpenGL applications remotely? Am I missing something? Do I have to install the mesa-utils libraries on the remote machine? Thanks so much! -Octavian XWin.0.log Description: Binary data -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
