Rob. I had problems with vnc because it was gnome crashing out through vnc as well. But maybe I missed something. I don’t have opencl available on either machine despite the server running darktable-cli having a decent graphics card. It can’t find libopencl according to the terminal when I launch it with –d opencl but I don’t have time to fix it and this machine is going to sit there quietly crunching raw files for the next year so it doesn’t matter for me.
From: Rob Z. Smith Sent: Wednesday, November 05, 2014 4:20 PM To: Matt Kitcat Subject: RE: [Darktable-users] Darktable over XRDP? Hey , well done. My problem here is that X (even with MobaXterm acceleration) is pretty much unusable tunnelled across the net to our servers. I experimented briefly with XRDP but like you found KDE was needed and I simply don’t have the option to install that on all our servers so for me VNC is a much better and lighter weight solution. With either of these methods I guess you should be able to use OpenCL on dt if the server graphics are suitable. After all everything is ‘local’ on the server to dt with only the display frame buffer being redirected to your PC so it should work. If your network latency is as bad as mine though screen area redraws might be tedious. From: Matt Kitcat [mailto:[email protected]] Sent: 05 November 2014 12:41 To: Rob Z. Smith Subject: Re: [Darktable-users] Darktable over XRDP? Hi Rob. The reason I was suggesting a local client run x server was because I have been struggling for days to successfully remote to my Fedora 20 server running XRDP so I switched to XWinlogon. But I couldn’t get darktable to run. I can’t remember the problem but I suspect it is due to opencl. I was going to try run it with opencl disabled but eventually I managed to log on using windows remote desktop. This isn’t the place to discuss this but here I go anyway. Fedora 20 and Gnome seem to fail with remote desktop (I get the “Oh no, something has gone wrong” Gnome fail when logging on). No amount of google provided a solution so I installed KDE and had to create a .Xclients file in my home directory with "startkde" in it and this forces XRDP to launch KDE as the desktop manager. And now Darktable seems to run fine over XRDP . Active opencl is greyed out and states “not available on this system” which I guess is because this is a Dell server with a very basic graphics (vga) system. If I get time I will switch to another machine which is the one I am using for the cli image processing. This has a half decent graphics card and I will test with that but for my purposes I am happy to do the occasional tweaks with the Dell server. I asked this question because I didn’t want to waste the rest of my life on it if it was going to be impossible but actually it seems fine. Thanks for the encouragement! Rob From: Rob Z. Smith Sent: Wednesday, November 05, 2014 9:30 AM To: Matt Kitcat ; [email protected] Subject: RE: [Darktable-users] Darktable over XRDP? My guess is that it would probably work with an Xserver on your PC but whether you would be able to use the OpenCL stuff will be interesting – for what it’s worth I use MobaXterm a lot myself as that’s the first PC X package I’ve found to actually be fairly stable. If I was going to try this myself I think I’d probably prefer running a vncserver on the dt box and then connecting to that with vncviewer or similar as the dt session should then persist when the desktop connection craps out. Dt would also then, hopefully, run exactly as it does for a normal local session, maybe. Good luck, and let us know how it goes. Rob. From: Matt Kitcat [mailto:[email protected]] Sent: 04 November 2014 18:59 To: [email protected] Subject: [Darktable-users] Darktable over XRDP? Hello all. Do you think it would be possible to run darktable via xwinlogon server or some such thing (currently I am failing to get XRDP to work on Fedora 20 but I can use Xwin log on server). I can’t launch darktable though. The thing is I am using darktable-cli on a server and occasionally might need to tweak a raw file to create a new xmp file for the processing of images. I would export an image and then view it via a windows machine over the network to assess the changes on a high end monitor. I don’t want to spend too much time on this if it is a no go but I need to find a way of quickly tweaking an xmp file without having to boot from a USB stick to run darktable and thought remote desktop to the server where it is installed might be an answer. Thanks Matt This email is confidential and is intended for the addressee only. If you are not the addressee, please delete the email and do not use it in any way. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of the company. NHBC reserves the right to monitor all email communications. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. 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