Comments on: How To Install EMC2 on Unbuntu 7.10 Gutsy From Scratch

By: colioium

colioium — Mon, 25 Aug 2008 17:49:11 +0000

hi Andy,

Everything worked just right
…..
carlos@ubuntu:/usr/src$ sudo nano -w /boot/grub/menu.lst
carlos@ubuntu:/usr/src$ uname -a

until here:
Linux ubuntu 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008 i686 GNU/Linux

carlos@ubuntu:/usr/src$ cd /home/carlos/Área\ de\ Trabalho/rtai-3.6-test1
carlos@ubuntu:~/Área de Trabalho/rtai-3.6-test1$ make menuconfig

make[1]: Entering directory `/home/carlos/Área de Trabalho/rtai-3.6-test1/base/config/kconfig’

make[1]: /home/carlos/Área: Ficheiro ou directoria inexistente
make[1]: *** No rule to make target `/home/carlos/Área’. Stop.
make[1]: Leaving directory `/home/carlos/Área de Trabalho/rtai-3.6-test1/base/config/kconfig’
make: *** [mconf] Error 2

Could you tell me where is the mistake.

By: Colin MacKenzie

Colin MacKenzie — Thu, 01 May 2008 14:38:34 +0000

Hi Andy,

Great job! Helped me get things compiled on the new Hardy stable 8.04 with only minor changes.

By: Andy

Andy — Wed, 09 Apr 2008 00:54:08 +0000

ACEMI – problem solved. I was missing the “*” in the hard memlock line. Thanks to Jeff Epler for pointing this out.

By: Andy

Andy — Tue, 25 Mar 2008 06:29:12 +0000

ACEMI – I tried the chmod and chown on /usr/local/bin/halcmd. No luck. So then I tried changing the 40-permissions.rules file for udev. Still no luck. The hard memlock is already set to a high value in my steps.

By: acemi

acemi — Fri, 28 Dec 2007 12:56:43 +0000

sudo problem is solved for my Debian Lenny box. It’s related with udev and memlock size.

The instructions for Debian Lenny are on http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Debian_Lenny_Compile_RTAI#OS_Configuration

By: acemi

acemi — Mon, 19 Nov 2007 05:52:16 +0000

After some testing, I see that chmod is not a solution. It’s only solve the halcmd problem, but EMC2 is not running correctly without sudo

By: Andy

Andy — Mon, 19 Nov 2007 03:05:45 +0000

Interesting – I’ll give the chmod/chown options a try and possibly update the instructions. I previously tried sudo for halcmd and emc, but it didn’t work.

By: acemi

acemi — Sun, 18 Nov 2007 21:22:05 +0000

Hi Andy,

Nowadays, I’m trying to compile and to run EMC2 in Debian Lenny (which has the same kernel with Ubuntu 7.10)

The segmentation fault problem of halcmd occurs for me too. I use the following to not run EMC2 as root:

chmod 4750 halcmd
chown root:my_user_group halcmd

Secondly, I don’t turn off “ACPI support” completely at the kernel compilation step. I only turn off “ACPI processor support”
Power management options (ACPI, APM) —> ACPI (Advanced Configuration and Power Interface) Support —> Processor —> disabled

So, the computer may power itself off.

By: FriedPope

FriedPope — Fri, 16 Nov 2007 21:09:49 +0000

Excellent tutorial, made my life very simple.

BTW You can use [gksudo emc] as an icon command to prompt for a password, avoids using the cmd line.