Linux Mint with RTAI

I do believe Debian uses TCL and TK ver 8.5 where Mint and Ubuntu use 8.5 or 8.6. I have not messed with this in a while do not have time at this moment to check it out. You are welcome to try and fix then post here and I will update script later when I get a chance to see your post.

Good luck
Tim March

as tim says use tcl & tk 8.5 .
try and use debian ftp rather than obscure ones may help too

Thanks!

It looks like TJ made some changes to the .iso. I wasn't able to download them the other day, I tried again a couple days ago and saw that he had re-uploaded them.

The new iso worked fine with LMDE 2 Betsy.

So far so good, the new (to me) computer will be here Tuesday, I'll see how it runs.

Regards,

Matt

I am having the problem of axis not running and the error message that was discussed back on the first 2 pages of this thread.

I used the install procedure from Big John from his mesaus website in the download section. Apparently some newer versions are out since that doc so I installed them (mint 17.3, linuxcnc 2.7.4).

I believe I followed the instructions correctly but have the exact problem of axis not starting and the error message as in the first couple pages of this thread. (task: 513 cycles, min=0.000018, max=0.008041, avg=0.002026, 0 latency excursions (> 10x expected cycle time of 0.001000s)

I have read the entire thread but cannot figure out what might be the cause / cure for axis not starting. Naturally I do not want to do a complete reinstall with a different method if there is a way to "fix" the current install. I did not see any bottom line cause for the axis not running problem.

Any help much appreciated !

George

the

(task: 513 cycles, min=0.000018, max=0.008041, avg=0.002026, 0 latency excursions (> 10x expected cycle time of 0.001000s)

message is just for information, its not an error message

I would start LinuxCNC from the command line to look for error messages
(and look through the kernel log (dmesg) if running RTAI )

PCW wrote:

the

(task: 513 cycles, min=0.000018, max=0.008041, avg=0.002026, 0 latency excursions (> 10x expected cycle time of 0.001000s)

message is just for information, its not an error message

I would start LinuxCNC from the command line to look for error messages
(and look through the kernel log (dmesg) if running RTAI )

Axis does fail to launch and terminates with that message as the only real hint. This was a old problem (page 2 of this thread) that several had. It was just never clear what specifically was the cause of this problem. Several install techniques and versions were used over time, I don't want to play trial and error with each install taking a couple hours. Hopefully someone can point at what specifically causes axis to fail to launch so I can fix that without numerous complete reinstall attempts.

Thanks Pete

I think the best thing is to look for the real error message
either in the log files or dmesg

Newer version of LinuxCNC _always_ print that timing message when Axis exits
so it doesn't mean anything

Mine is a levono SFF computer with onboard video. It runs great on debian 7 and linuxcnc 2.7.4 or 2.8 pre so its not a issue of incompatible computer with linuxcnc, its something going on with mint.

I picked up the levono computers for a couple of future retrofits. I got a while yet before starting the retrofit so hopefully mint will mature and some of these compatibility bugs with linuxcnc will get sorted out by then.

I installed linux mint on a hard drive today using this ISO on a usb stick:

Linux Mint 17.3 "Rosa" - MATE (32-bit)



Than ran through the mint17.3.txt on JT's site. When it got to this line it had an error:

$ sudo apt-get -y install linux-headers-3.4-9-rtai-686-pae
…
Examining /etc/kernel/header_postinst.d.
run-parts: executing /etc/kernel/header_postinst.d/dkms 3.4-9-rtai-686-pae
Error! Bad return status for module build on kernel: 3.4-9-rtai-686-pae (i686)
Consult /var/lib/dkms/ndiswrapper/1.59/build/make.log for more information.

$ cat /var/lib/dkms/ndiswrapper/1.59/build/make.log

DKMS make.log for ndiswrapper-1.59 for kernel 3.4-9-rtai-686-pae (i686)
Tue Nov 15 15:01:51 CST 2016
make: Entering directory `/usr/src/linux-headers-3.4-9-rtai-686-pae'
LD /var/lib/dkms/ndiswrapper/1.59/build/built-in.o
MKEXPORT /var/lib/dkms/ndiswrapper/1.59/build/crt_exports.h
MKEXPORT /var/lib/dkms/ndiswrapper/1.59/build/hal_exports.h
MKEXPORT /var/lib/dkms/ndiswrapper/1.59/build/ndis_exports.h
MKEXPORT /var/lib/dkms/ndiswrapper/1.59/build/ntoskernel_exports.h
MKEXPORT /var/lib/dkms/ndiswrapper/1.59/build/ntoskernel_io_exports.h
MKEXPORT /var/lib/dkms/ndiswrapper/1.59/build/rtl_exports.h
MKEXPORT /var/lib/dkms/ndiswrapper/1.59/build/usb_exports.h
CC [M] /var/lib/dkms/ndiswrapper/1.59/build/crt.o
/var/lib/dkms/ndiswrapper/1.59/build/crt.c: In function ‘_win_srand’:
/var/lib/dkms/ndiswrapper/1.59/build/crt.c:470:2: error: implicit declaration of function ‘prandom_seed’ [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[3]: *** [/var/lib/dkms/ndiswrapper/1.59/build/crt.o] Error 1
make[2]: *** [_module_/var/lib/dkms/ndiswrapper/1.59/build] Error 2
make[1]: *** [sub-make] Error 2
make: *** [all] Error 2
make: Leaving directory `/usr/src/linux-headers-3.4-9-rtai-686-pae'

Any idea why a virgin install would error at this point?