Thankyou for that advice and I will be sure to do that; recording all of the system calls that it makes would be useful I imagine. <div><br></div><div>I am still trying to solve this problem as best as I can though. The latest thing that I have tried is just upgrading my NVIDIA drivers to the absolute latest beta versions (285.03 to be precise) and so far so good. However, that was only a few hours ago and the problem probably still exists.</div> <div><br></div><div>I will update you on any progress and, once again, any and all ideas and suggestions are very welcome,</div><div>I am going to get to the bottom of this,</div><div>Robert</div><div><br></div><div>P.S. I have also contacted the Nvidia developers and submitted a bug report and pointed them to the descriptions of the problems that I have been having.<br> <div><br><div class="gmail_quote">On Thu, Sep 8, 2011 at 12:03 PM, Pat Kane <span dir="ltr"><<a href="mailto:pekane52@gmail.com">pekane52@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> It would be interesting to see strace output of the Xorg process when<br> it is in that state. That is a bit tricky to do however, you need to ssh into<br> the box to run strace, otherwise you might hit a deadlock, see:<br> <br> <a href="http://lists.x.org/archives/xorg/2008-August/038048.html" target="_blank">http://lists.x.org/archives/xorg/2008-August/038048.html</a><br> <br> Run the strace with detailed timestamps and do not be confused by<br> "normal" Xorg activity. You should practice running strace on the<br> X server when it is not broken.<br> <br> Pat<br> ---<br> <div><div></div><div class="h5"><br> <br> On Mon, Sep 5, 2011 at 7:46 PM, Robert Massaioli<br> <<a href="mailto:robertmassaioli@gmail.com">robertmassaioli@gmail.com</a>> wrote:<br> > Hi XOrg Mailing List,<br> ><br> > In a nutshell: I am having issues with /usr/bin/X taking up way too much CPU<br> > and, when it does start to use more CPU, my entire user experience becomes<br> > quite laggy. I have tried really hard to solve the problem on my own but I<br> > was unable to find a solution so I have finally decided that it is time for<br> > me to ask this mailing list for help. That is the fundamental problem, the<br> > rest of this post deals with how it happens, what I am running and what I<br> > have already tried. I could use any help I can get so thank you for reading.<br> ><br> > This link points to a screenshot of htop running showing the constant high<br> > 40-60% CPU usage that /usr/bin/X now sits at: <a href="http://i.imgur.com/mRIzG.png" target="_blank">http://i.imgur.com/mRIzG.png</a><br> ><br> > My computer is quite powerful and should easily be able to handle any load<br> > that any part of linux can throw at it. I have a Quad Core i2500k CPU, an<br> > NVIDIA 560 Ti Graphics Card and 8GB RAM, so no hardware bottlenecks thats<br> > for sure (and my Windows Partition runs like a breeze; which proves that the<br> > hardware seems to be solid). However, with that in mind this is what<br> > happens:<br> ><br> > Start computer, everything is working fine, /usr/bin/X is behaving normally.<br> > I can play and watch videos with no lag at all.<br> > Wait some undefined period of time and just work on stuff (I don't actually<br> > know how to reliably reproduce the problem but it does happen every single<br> > time I use my linux partition).<br> > Watch one of my CPU's spike to an average of 50% and keyboard responsiveness<br> > drop to the point where I can notice the lag in response time. Video<br> > playback also becomes impossibly slow at this point.<br> ><br> > I would not have thought that the keyboard would be an issue but it is<br> > lagging so I have a Razer Acosta keyboard if that helps.<br> ><br> > In short, I have no idea what is causing the problem, on the software side I<br> > am running:<br> ><br> > $ uname -a<br> > Linux ShhnapDesk 2.6.38-10-generic #46-Ubuntu SMP Tue Jun 28 15:07:17 UTC<br> > 2011 x86_64 x86_64 x86_64 GNU/Linux<br> > $ cat /etc/lsb-release<br> > DISTRIB_ID=Ubuntu<br> > DISTRIB_RELEASE=11.04<br> > DISTRIB_CODENAME=natty<br> > DISTRIB_DESCRIPTION="Ubuntu 11.04"<br> > $ xmonad --version<br> > xmonad 0.9.2<br> ><br> > My window manager is XMonad as you can see from above and I am also running<br> > XMobar (0.13) through that. I have tried:<br> ><br> > Asking for help elsewhere:<br> > <a href="http://superuser.com/questions/328612/linux-x11-is-using-up-50-of-one-of-my-cpus-and-lagging-terribly" target="_blank">http://superuser.com/questions/328612/linux-x11-is-using-up-50-of-one-of-my-cpus-and-lagging-terribly</a><br> > Uninstalling Flash because I read that it might be the problem.<br> > Using Firefox instead of Google Chrome (I found that chrome had some X<br> > issues in the past)<br> > Closing every single X program (bar XMonad) to see if /usr/bin/X would start<br> > behaving again.<br> ><br> > But none of those troubleshooting attempts worked out for me.<br> ><br> > I do not know what else to do other than read through the entire codebase of<br> > X and try and reverse engineer where my problem lies. If anybody has any<br> > suggestions then please make them and any extra information that you happen<br> > to require I will be more than happy to provide. This problem is<br> > significantly hindering my Linux joy and I love Linux. I use it for<br> > everything and have done so for the last three years.<br> ><br> > Thanks in advance for any and all help,<br> > Robert<br> ><br> </div></div><div class="im">> _______________________________________________<br> > <a href="mailto:xorg@lists.freedesktop.org">xorg@lists.freedesktop.org</a>: X.Org support<br> > Archives: <a href="http://lists.freedesktop.org/archives/xorg" target="_blank">http://lists.freedesktop.org/archives/xorg</a><br> > Info: <a href="http://lists.freedesktop.org/mailman/listinfo/xorg" target="_blank">http://lists.freedesktop.org/mailman/listinfo/xorg</a><br> </div>> Your subscription address: <a href="mailto:pekane52@gmail.com">pekane52@gmail.com</a><br> ><br> </blockquote></div><br></div></div>