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Old 12-20-2012, 07:21 AM   #1
Registered: Feb 2005
Posts: 45

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Linux - Point of Sale - Fail

Good day all. I have been trying to set up a POS computer for my friends business for quite a few months now. I seem to be stuck with the printer functioning properly. Here's the back story. I started with Xubuntu (liked the GUI, it's not graphic intensive) 11.10. Tried to install LemonPOS, but had problems; tried Openbravo 2.3, but seemed like it wasn't being updated, installed Unicenta oPOS & used that with an instillation of LAMP. I originally had an Epson TM-II receipt printer & used the drivers for a CBM 1000 (Epson said that they don't support Linux) to get it working in Linux, never printed correctly for Unicenta. Got a CBM 1000 (maybe a problem with the drivers) & same thing. Finally picked up an Epson TM-IV & installed Epson drivers (packaged for Ubuntu 9.04). Once again, it worked fine in Linux, but didn't work for Unicenta. I had looked at the forums & everybodies sugestions to fix the problem where for people using Windows.

I let things sit for a little bit & came back to them this week. I moved to Kubuntu 12.04 & gave Lemon another shot. It installed fine, but I had problems with the printer again. I moved back to Unicenta, problems with the printer. Frustrated, I pulled out Windows 7 & installed it. Found printer drivers & installed Unicenta. Everything was working perfectly in 30 minutes.

I really want to use Linux for this, but it has been taking too long to figure this out & there doesn't seem to be any helpful information to fix problems. Any suggestions would be great. I want to help out my friends with their new business.

Run down:
OS' tried
Xubuntu 11.10
Kubuntu 12.04

Lemon POS
Unicenta oPOS (based on Openbravo)
Openbravo 2.30

Printers - all use parallel port
Epson TM-II
CBM 1000
Epson TM-IV
Old 12-20-2012, 08:07 AM   #2
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  • seem to be stuck
  • seemed like it wasn't being updated
  • never printed correctly
  • maybe a problem with the drivers
  • didn't work
  • had problems with the printer

You seem A+ on trying things out but C- on analyzing problems. Learn to write down exactly what you do and what happened, and save the exact error message and logs when you have a problem. Post them on LQ when you need help.
1 members found this post helpful.
Old 12-20-2012, 10:13 PM   #3
Registered: Feb 2005
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Sorry about that. I was on my way out the door to work & posted this before I left. I had meant to add more information. The problem I have is with the printer. When I print from Libre Office or a test page everything works fine. When I try to print from Unicenta everything is messed up. I've tried posting on the Unicenta forum, but no one answered. It seems most people use Windows. Here is a link to another thread where someone is having the same problem.

Since I switched to Kubuntu I have been able to install Lemon, but have had problems with the program admitting that a printer was connected. This has just been frustrating. Everything seems to just work for other people, but not me. I don't have a preference on the POS software, I just to get this set up for my friends. Thanks for any help.
Old 12-21-2012, 07:33 AM   #4
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When you say "everything is messed up" does that include your job, your car, your mental health? It's not an error message that I recognize.
Old 12-21-2012, 02:09 PM   #5
Registered: Mar 2011
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smallpond has an excellent point in that you're being very disorganized in how you're going about diagnosing and resolving problems. It's not merely a matter of doing a fresh reinstall each time you encounter a road block.

Having said that though, my recommendation is that you use Windows where everything works fine and give that to your friends to use so that they don't suffer from your debugging process.

Then on a different computer, perform your experimentations.

1. The printer is not related to the software, what you need to do is get the printer driver installed and working under Linux first. So if you're using any application the printer will work. I will grant that there are cases where a printer behaves differently with some Linux applications, but first you ought to get it working in general under Linux before you add the POS software dimension.

2. I did a brief search of Lemon and Unicenta and they both claim Linux capability. Lemon more than Unicenta. Well, what you ought to do is a bit of web searching and see if there are stories or if each of those software's claims to have worked with a certain distribution. For instance if they claimed to work with Mandriva, Ubuntu, Debian, or something then you likely will wish to consider installing "that" Linux distribution so that you can use their POS software in a previously tested environment.

3. Beware of things that are old and no longer supported, but also beware of things that are so new that they're experimental and just someone playing around. Free is cool, but for business critical applications you get what you pay for. On the old end, if the last version was say in 2006 and tested on Ubuntu 6.06, well that Ubuntu was end of life a few years ago and this software you're using likely will have trouble with current Linux distos. On the new/experimental end, just verify that this isn't some grad school project that somebody wrote once to get a grade and posted on a blog. Neither of those sound to be that way and probably work very well by the way.

4. Get one concept working at a time, don't leap ahead or reinstall tons of stuff merely because you got to some point and it didn't yet work.

5. Understand that you may have to build from code in order to create a version of this free software which is unique to your Linux installation. This actually is one of the more guaranteed ways to make sure the software will work for you, but also may be problematic if there are a lot of package requirements needed.
Old 12-24-2012, 04:00 PM   #6
Registered: Feb 2005
Posts: 45

Original Poster
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Sorry, my thoughts have been a bit disorganized. Here is where I made it to.

Installed Linux fine.
Installed Unicenta fine.
Installed LAMP fine.
Installed printer fine.
Printed from LibreOffice fine.
Printed from Unicenta all messed up. This tells me that it is a problem with the software interfacing with either the OS or the printer & drivers.

Everything printed in the same manner as the the link I posted before. I had been messing around with a few different things & that's why I did a fresh install, I wanted to make sure that something I did in the past was not causing a problem now. If I move to Windows, I won't go back to Linux for this. I want to make this work on Linux & save them some money.

I was hoping someone else has encountered this, but it doesn't look like it. Thanks for trying.


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