> On May 18, 2016, at 3:26 PM, Rich Cook <[email protected]> wrote: > > Well, then there is some misunderstanding on my part. If GLX is disabled in > Xorg, how are my users running remote OpenGL programs and displaying back to > their desktop? My immediate thought is that it's just that we don't run the > "latest and greatest" linux on our clusters.
Likely. It’s off by default in server versions 1.17 and newer. If you’re running such a server, you’d have to configure Xorg to enable it. > If we had the latest RedHat or a newer XOrg, are you saying they would not > be able to see glxgears on their desktop any more? That's important > information for us as I say. Not by default. You’d need to configure your server to turn it on. > Thanks > -- Rich > >> On May 18, 2016, at 9:55 AM, Jeremy Huddleston Sequoia <[email protected]> >> wrote: >> >> >>> On May 18, 2016, at 07:31, Rich Cook <[email protected]> wrote: >>> >>> IGLX is dead? >> >> It is disabled by default these days in Xorg: >> >> commit d0da0e9c3bb8fe0cd4879ecb24d21715bfaa209b >> Author: Eric Anholt <[email protected]> >> Date: Thu Sep 4 10:59:40 2014 -0700 >> >> glx: Disable indirect GLX contexts by default. >> >> Almost every situation of someone running indirect GLX is a mistake >> that results in X Server crashes. Indirect GLX is the cause of >> regular security vulnerabilities, and rarely provides any capability >> to the user. Just disable it unless someone wants to enable it for >> their special use case (using +iglx on the command line). >> >> Signed-off-by: Eric Anholt <[email protected]> >> Acked-by: Keith Packard <[email protected]> >> Signed-off-by: Keith Packard <[email protected]> >> >>> I think you are going to find a lot of people to be very shocked by that >>> statement. Something really has to replace it, and something definitely >>> will, because many many users are using IGLX right now. Not everyone using >>> OpenGL is playing games and looking for fast refresh rates. Scientists at >>> the national laboratories and other research facilities are using IGLX >>> every day to get their work done. >>> >>> There are lots of applications that draw with OpenGL, such as plotting >>> software for scientific applications like TecPlot or IDL, lots of >>> engineering software, etc, where scientists need to display their data on a >>> remote cluster back to their desktop. It's highly inconvenient to shuttle >>> their data back to the desktop. Other applications draw things like >>> buttons and other GUI elements with OpenGL. IGLX is not as fast as direct >>> mode GL, but software rendering is incredibly slow, often by 10X or more, >>> because of the incredibly inefficient asynchronous X11 rendering nightmare. >>> >>> >>> My guess is that if IGLX goes away, people will switch to RealVNC or >>> TurboGL, which are VNC technologies that support OpenGL in hardware and >>> then copy pixels around. These solutions require users to spin up their >>> own X11 server, which is a pretty heavy weight solution, but it's how we do >>> it where I work when necessary. >>> >>> >>>> On May 17, 2016, at 11:16 PM, Jeremy Huddleston Sequoia >>>> <[email protected]> wrote: >>>> >>>> >>>>> On May 17, 2016, at 22:42, Rich Cook <[email protected]> wrote: >>>>> >>>>> Hmm, what is going to replace IGLX? >>>> >>>> Nothing. It's been pretty much dead for years. >>>> >>>>> How are people going to display OpenGL graphics over remote X11 if not by >>>>> GLX? Sorry if this is offtopic. >>>> >>>> They're not. It's not efficient. You can use software rendering if you >>>> need to. >>>> >>>>> >>>>>> On May 17, 2016, at 10:38 PM, Jeremy Huddleston Sequoia >>>>>> <[email protected]> wrote: >>>>>> >>>>>> >>>>>>> On May 17, 2016, at 22:18, Richard Cook <[email protected]> wrote: >>>>>>> >>>>>>> I don't know what IGLX is, but GLX did not seem to work for me at all >>>>>>> when I tried it in 2.7.9. Specifically, I could not run glxgears on a >>>>>>> remote linux box, which is the canonical GLX test I always use. >>>>>> >>>>>> That is IGLX. >>>>>> >>>>>>> But the good news it that switching back to 2.7.8 was painless and made >>>>>>> my problems with 2.7.9 go away. >>>>>>> >>>>>>>> On May 17, 2016, at 9:40 PM, Jeremy Huddleston Sequoia >>>>>>>> <[email protected]> wrote: >>>>>>>> >>>>>>>> FWIW, there are security vulnerabilities addressed in the versions of >>>>>>>> libpng in 2.7.9, so you might want to update at least for the security >>>>>>>> reasons. >>>>>>>> >>>>>>>> The only issues that I'm aware of as regressions are the issues with >>>>>>>> IGLX (which isn't really going to be supported much longer) and a >>>>>>>> regression in the support for tcp connections (which is off by default >>>>>>>> and discouraged). >>>>>>>> >>>>>>>> --Jeremy >>>>>>>> >>>>>>>>> On May 17, 2016, at 14:39, Christopher Fick <[email protected]> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>> Magda, thank you so much for your thoughts! I did notice that v2.7.9 >>>>>>>>> was just released earlier this month, and bugs were one thing I >>>>>>>>> wondered about. I'm pretty out of the loop on this stuff. >>>>>>>>> >>>>>>>>> And, no I don't think I have anything to gain from an upgrade. >>>>>>>>> Nothing prompted me to look into an upgrade aside from curiosity and >>>>>>>>> an attempt to stay up to date. I just use XQ to run Inkscape, and so >>>>>>>>> far I haven't had any issues in the little I've used it. It also >>>>>>>>> appears that Inkscape is still standing at the same version (0.91) as >>>>>>>>> when I initially installed it with XQ So, I will take your advice. If >>>>>>>>> it ain't broken... >>>>>>>>> >>>>>>>>> Many Thanks! >>>>>>>>> Christopher >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> On Tue, May 17, 2016 at 4:25 PM, Magda Tsintou >>>>>>>>> <[email protected]> wrote: >>>>>>>>> Note: Sorry forgot to reply to all so that everyone can keep track of >>>>>>>>> the conversation... >>>>>>>>> >>>>>>>>> Hi Christopher, >>>>>>>>> >>>>>>>>> With your OSX you would certainly not need to update. We recently >>>>>>>>> were discussing some bugs in XQ 2.7.9 that have not been resolved >>>>>>>>> while the version 2.7.8 works perfectly fine and I am running El >>>>>>>>> Capitan 10.11.5. XQ 2.7.9 did not allow me to work with certain >>>>>>>>> commands that needed forwarding over ssh and given the limited people >>>>>>>>> who have been working on that fix this may cause problems for some >>>>>>>>> time. I would strongly recommend from my personal experience to stick >>>>>>>>> with XQ 2.7.8 if you have nothing in particular to gain from >>>>>>>>> upgrading. I hope this helps a bit. Good luck! >>>>>>>>> >>>>>>>>> Best regards, >>>>>>>>> Magda. >>>>>>>>> >>>>>>>>> >>>>>>>>> On Tue, May 17, 2016 at 5:17 PM, Christopher Fick >>>>>>>>> <[email protected]> wrote: >>>>>>>>> Hi I'm running XQ 2.7.8, and I see that 2.7.9 is now available. If I >>>>>>>>> check for updates through the XQ "app" it says I'm up to date with >>>>>>>>> 2.7.8. >>>>>>>>> >>>>>>>>> So, if I manually download and install 2.7.9 from the website should >>>>>>>>> I just install it over the previous version? >>>>>>>>> >>>>>>>>> And on a side note, should I be able to update through 2.7.8, or is >>>>>>>>> it common knowledge that it doesn't work that way since this is more >>>>>>>>> of a framework (for lack of better words) rather than a normal >>>>>>>>> application. >>>>>>>>> >>>>>>>>> Macbook Pro Mid 2012 15" >>>>>>>>> OSX 10.8.5 >>>>>>>>> >>>>>>>>> Thanks! >>>>>>>>> Christopher >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Do not post admin requests to the list. They will be ignored. >>>>>>>>> X11-users mailing list ([email protected]) >>>>>>>>> Help/Unsubscribe/Update your Subscription: >>>>>>>>> https://lists.apple.com/mailman/options/x11-users/magda.tsintou%40gmail.com >>>>>>>>> >>>>>>>>> This email sent to [email protected] >>>>>>>>> >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Do not post admin requests to the list. They will be ignored. >>>>>>>>> X11-users mailing list ([email protected]) >>>>>>>>> Help/Unsubscribe/Update your Subscription: >>>>>>>>> https://lists.apple.com/mailman/options/x11-users/jeremyhu%40freedesktop.org >>>>>>>>> >>>>>>>>> This email sent to [email protected] >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Do not post admin requests to the list. They will be ignored. >>>>>>>> X11-users mailing list ([email protected]) >>>>>>>> Help/Unsubscribe/Update your Subscription: >>>>>>>> https://lists.apple.com/mailman/options/x11-users/wealthychef%40gmail.com >>>>>>>> >>>>>>>> This email sent to [email protected] >>>>>>> >>>>>> >>>>> >>>>> ————— >>>>> Cheers from Rich Cook >>>>> =============================== >>>>> Success is the ability to go from one failure to the next with no loss of >>>>> enthusiasm. --Winston Churchill >>>>> >>>> >>> >>> ————— >>> Cheers from Rich Cook >>> =============================== >>> Success is the ability to go from one failure to the next with no loss of >>> enthusiasm. --Winston Churchill >>> >> > > ————— > Cheers from Rich Cook > =============================== > Success is the ability to go from one failure to the next with no loss of > enthusiasm. --Winston Churchill > _______________________________________________ Do not post admin requests to the list. They will be ignored. 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