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Home Forum Getting LinuxCNC Installing LinuxCNC 10.04 live cd no Realtime

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TOPIC: 10.04 live cd no Realtime

10.04 live cd no Realtime 09 Sep 2010 22:25 #4082

I downloaded the 10.04 emc live cd and installed it seems the realtime system is not loading. I checked the grub boot menu and realtime kernel is listed but doesn't seem to load, the memory lock limit is set to 20480KiB. Here is the output i get running emc from term.


hans@CnC:~$ sudo emc
EMC2 - 2.4.3
Machine configuration directory is '/home/hans/emc2/configs/my-mill'
Machine configuration file is 'my-mill.ini'
Starting EMC2...
insmod: error inserting '/usr/realtime-2.6.32-122-rtai/modules/rtai_hal.ko': -1 Operation not permitted
Realtime system did not load
Shutting down and cleaning up EMC2...
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
RTAPI: ERROR: could not open shared memory (errno=2)
RTAPI: Locked memory limit is 64KiB, recommended at least 20480KiB.
This can cause the error 'could not open shared memory'.
For more information, see
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
HAL: ERROR: rtapi init failed
halcmd: hal_init() failed: -22
NOTE: 'rtapi' kernel module must be loaded
ERROR: Module hal_lib does not exist in /proc/modules
ERROR: Module rtapi does not exist in /proc/modules
ERROR: Module rtai_math does not exist in /proc/modules
ERROR: Module rtai_sem does not exist in /proc/modules
ERROR: Module rtai_fifos does not exist in /proc/modules
ERROR: Module rtai_sched does not exist in /proc/modules
ERROR: Module rtai_hal does not exist in /proc/modules
Cleanup done
EMC terminated with an error. You can find more information in the log:
/home/hans/emc_debug.txt
and
/home/hans/emc_print.txt
as well as in the output of the shell command 'dmesg' and in the terminal
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Re:10.04 live cd no Realtime 10 Sep 2010 02:04 #4088

  • andypugh
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Have you tried doing what is suggested in the URL pointed to?
wiki.linuxcnc.org/cgi-bin/emcinfo.pl?LockedMemory
(Your second sentence suggests that you have, I am just trying to be clear)
Not that that should be necessary on a fresh, LiveCD install.
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Re:10.04 live cd no Realtime 10 Sep 2010 04:30 #4089

yes i have sorry.

limits.conf :
# /etc/security/limits.conf
#
#Each line describes a limit for a user in the form:
#
#<domain>        <type>  <item>  <value>
#
#Where:
#<domain> can be:
#        - an user name
#        - a group name, with @group syntax
#        - the wildcard *, for default entry
#        - the wildcard %, can be also used with %group syntax,
#                 for maxlogin limit
#        - NOTE: group and wildcard limits are not applied to root.
#          To apply a limit to the root user, <domain> must be
#          the literal username root.
#
#<type> can have the two values:
#        - "soft" for enforcing the soft limits
#        - "hard" for enforcing hard limits
#
#<item> can be one of the following:
#        - core - limits the core file size (KB)
#        - data - max data size (KB)
#        - fsize - maximum filesize (KB)
#        - memlock - max locked-in-memory address space (KB)
#        - nofile - max number of open files
#        - rss - max resident set size (KB)
#        - stack - max stack size (KB)
#        - cpu - max CPU time (MIN)
#        - nproc - max number of processes
#        - as - address space limit (KB)
#        - maxlogins - max number of logins for this user
#        - maxsyslogins - max number of logins on the system
#        - priority - the priority to run user process with
#        - locks - max number of file locks the user can hold
#        - sigpending - max number of pending signals
#        - msgqueue - max memory used by POSIX message queues (bytes)
#        - nice - max nice priority allowed to raise to values: [-20, 19]
#        - rtprio - max realtime priority
#        - chroot - change root to directory (Debian-specific)
#
#<domain>      <type>  <item>         <value>
#

#*               soft    core            0
#root            hard    core            100000
#*               hard    rss             10000
#@student        hard    nproc           20
#@faculty        soft    nproc           20
#@faculty        hard    nproc           50
#ftp             hard    nproc           0
#ftp             -       chroot          /ftp
#@student        -       maxlogins       4

# End of file

* - memlock 20480 #EMC2
hans@CnC:~$ sudo /etc/init.d/realtime start
insmod: error inserting '/usr/realtime-2.6.32-122-rtai/modules/rtai_hal.ko': -1 Operation not permitted


I updated the rt kernel via synaptic thats why the version shows as realtime-2.6.32-122-rtai, had the same error before the update.
Last Edit: 10 Sep 2010 04:46 by blazedforever.
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Re:10.04 live cd no Realtime 10 Sep 2010 06:34 #4096

  • Mike_Eitel
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I have the same problems with my testsystem

Update had ...rtai--- problem.

decided to setup completly new by 10.4 iso.

Can not run emc2 ( see above )

decidet to go back to 8.04 and wait some time for bugfix before for next try

Mike
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Re:10.04 live cd no Realtime 10 Sep 2010 07:31 #4097

  • andypugh
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blazedforever wrote:
#* soft core 0
#root hard core 100000

* - memlock 20480 #EMC2

[/quote]

I am not sure that the format "* - memlock 20480" is valid, it doesn't match the file comments.

I wonder if it is worth trying

* hard memlock 20480
( and possibly also * soft memlock 20480 )
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Re:10.04 live cd no Realtime 10 Sep 2010 07:33 #4098

  • andypugh
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andypugh wrote:
[
I am not sure that the format "* - memlock 20480" is valid, it doesn't match the file comments.

Ignore that, linux.die.net/man/5/limits.conf says that "-" means "hard" and "soft" at the same time.
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