Error loading lcd

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10 years 2 months ago #78194 by newbynobi
Error loading lcd was created by newbynobi
Hallo,

I am trying to get my display working.
It is connected to a 7i76e and a 7i74 to a 7i73.

But that is irrelevant at this state,
I added in my hal file only one line

loadrt lcd fmt_string="LinuxCNC"

nothing else and I got:

usr/bin/rtapi_app exited without becoming ready
insmod for display failed, returned -1

This error does not help much.

I tested with 2.7.5 and master with kernel 4.1.0-0.bpo.1-rt-amd64
(Jessie with machinekit kernel)

dmesg, linuxcnc.debug and text do not contain any helpful information.

is lcd depending on aspecial kernel?

Norbert

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10 years 2 months ago #78199 by BigJohnT
Replied by BigJohnT on topic Error loading lcd
Norbert,

It's loadrt lcd fmt_strings="test"

You are missing the "s".

JT

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10 years 2 months ago #78200 by newbynobi
Replied by newbynobi on topic Error loading lcd
Hallo John,

sorry my fault, it was only a typo, I do load as

loadrt lcd fmt_strings="LinuxCNC"

Norbert

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10 years 2 months ago #78205 by BigJohnT
Replied by BigJohnT on topic Error loading lcd
Must be something else...
Code:
halrun halcmd: loadrt lcd fmt_strings="LinuxCNC" halcmd:

Works for me...

JT

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10 years 2 months ago #78213 by phillc54
Replied by phillc54 on topic Error loading lcd
I tried both my machines.
Code:
phill@lcnc:~$ uname -a Linux lcnc 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 GNU/Linux phill@lcnc:~$ halrun . halcmd: loadrt lcd fmt_strings="LinuxCNC" halcmd: phill@lcnc:~$

Code:
phill@jessie-64:~$ uname -a Linux jessie-64 4.4.0-trunk-rt-amd64 #1 SMP PREEMPT RT Debian 4.4.1-1~exp1 (2016-02-10) x86_64 GNU/Linux phill@jessie-64:~$ halrun halcmd: loadrt lcd fmt_strings="LinuxCNC" Note: Using POSIX realtime Waiting for component 'lcd' to become ready.....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
it never became ready...

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10 years 2 months ago #78225 by newbynobi
Replied by newbynobi on topic Error loading lcd
Same here,
lcd does not become ready, so it is a kernel question and may even be related to 64 bit.
Code:
gmoccapy@machinekit:~/linuxcnc-org$ uname -a Linux machinekit 4.1.0-0.bpo.1-rt-amd64 #1 SMP PREEMPT RT Debian 4.1.3-1~bpo8+1 (2015-08-12) x86_64 GNU/Linux
Who can help?

Norbert

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10 years 2 months ago #78240 by BigJohnT
Replied by BigJohnT on topic Error loading lcd
I should have included what I was running:
Code:
john@mint-shop ~ $ uname -a Linux mint-shop 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 i686 i686 GNU/Linux john@mint-shop ~ $ halrun . halcmd: loadrt lcd fmt_strings="LinuxCNC" halcmd:

I don't run 64-bit anything so I can't test that.

JT

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10 years 2 months ago #78242 by BigJohnT
Replied by BigJohnT on topic Error loading lcd
Looks an issue with the Preempt RT kernel, I get the same "waiting on....." with my Preempt RT 32-bit on LinuxMint.

JT

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10 years 2 months ago #78243 by BigJohnT
Replied by BigJohnT on topic Error loading lcd
Dewey came up with a patch if you want to try it.

JT

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10 years 2 months ago #78250 by newbynobi
Replied by newbynobi on topic Error loading lcd
Thanks,

I will test the patch tomorrow and inform!

Norbert

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