Eric H. Johnson wrote: > Hi all, > > Ok, I am stymied on this. Here are a couple more things I tried: > > 1> I noticed a slight difference in the file size between > initrd.img-2.6.24-16-rtai as built when installed from an install of xubunut > vs when built from my minimal system. I copied that file as generated from > xubuntu and copied it to /boot on the minimal system. Just for grins, I also > copied all of the rtai files in /boot from the xubuntu system to the minimal > system, even though the others were exactly the same size on both systems. > In both cases there was no difference. > > 2> There was also a slight difference in the /etc/apt/spources.list files, > so I copied that file from xubuntu to the minimal system before install > xorg, xfce, etc. then installed the remaining software. Again no difference. > > 3> While I do not see how this problem can be a function of the packages > installed, I tried taking an xubuntu install and start removing packages > until EMC would generate this error. I was never able to get EMC to stop > working, at least where it would generate a segfault.
Starting with xubuntu and taking things away works, but starting with a bare minimum install and adding things doesn't? Weird. > Those were more random shots than really knowing what I was doing. I was > mostly using the "Bob Hoover" method (he was the backup pilot for Chuck > Yeager on the X1) who said if you get into a situation you don't know how to > get out of, change the situation to one you can. :) So far I have not been > able to change it. I guess it is going to take putting some debug > information into the rtai kernel, which for the moment is beyond my skill > set. > > For anyone wanting to reproduce my steps, or to see what I might be doing > wrong, here my exact steps: > > 1> Install Ubuntu 8.04 from the alternate install CD > Select F4 - MODE > Select "Install a command line system" > Follow the prompts, I basically used all of the defaults > > 2> Optionally do > sudo aptitude update > sudo aptitude upgrade > It made no difference whether this step was run or not > Also check /etc/apt/sources.list, but by default all necessary repositories > are enabled. > > 3> Install xorg > sudo aptitiude install xorg > startx > > 4> Install xfce > sudo aptitude install xfce4 > startxfce4 > > 5> Install slim > sudo aptitude install slim > [reboot and log in] > > 6> Install EMC >>From a terminal session and the /home/<user name> folder: > wget http://linuxcnc.org/hardy/emc2-install.sh > sudo chmod 755 emc2-install.sh > ./emc2-install.sh > > 7> Make sure the rtai kernel is the default kernel > sudo nano /boot/grub/menu.lst > [Delete the generic kernels, or move the rtai kernels ahead of the generic > kernels] > > 8> Reboot and run EMC >>From terminal session enter: > emc > [Under sim, select the tkemc configuration] > It should generate 4 segfault errors and clean up. > > Regards, > Eric Thanks for posting those steps. I planning to do a similar light-weight install over the weekend - I just got an Atom motherboard that I want to use for a robotics project. I won't be using EMC2, but I will be using HAL. I had been thinking of using Dapper instead of Hardy, but I think I'll start by following your steps. If I can duplicate the problem I'll see what I can figure out. Regards, John Kasunich ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
