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Software - Support => Installing Software => Topic started by: arky217 on August 10, 2020, 02:36:41 PM

Title: LuckyBackup not working in LL50
Post by: arky217 on August 10, 2020, 02:36:41 PM
When you install LuckyBackup, it puts two options in the menu.
Normal LuckyBackup and LuckyBackup as superuser.
With LuckyBackup, the command is /usr/bin/luckybackup.
With LuckyBackup as superuser, the command is /usr/bin/luckybackup-pkexec.

I save to an external hard drive and with the regular LuckyBackup, it always failed because
of not having the correct permission, so I always used the superuser LuckyBackup.
(This was with LL48)

Well, the superuser LuckyBackup always worked just fine in LL48, but in LL50, it gives the following error
when you use the terminal to start it:

 /usr/bin/luckybackup-pkexec
qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb.

Aborted

Anyone know what the problem could be ?

Title: Re: LuckyBackup not working in LL50
Post by: firenice03 on August 10, 2020, 04:03:30 PM

@arky217 I would say it maybe something with LuckyBackup and Ubuntu 20.04 (LL5.0 Base)...


I did a quick google search and there does appear to be a bug - https://bugs.launchpad.net/ubuntu/+source/luckybackup/+bug/1887279


You would want to follow up with those devs...
Title: Re: LuckyBackup not working in LL50
Post by: Şerban S. on August 10, 2020, 04:09:48 PM
[...] Anyone know what the problem could be ?

Hello! :)

I use LuckyBackup for years!
I used it on Linux Lite 4.2, 4.4, 4.6, 4.8 and now, i use it on 5.0. Never had any trouble.
I use it as Root, only in exceptional situations.
You probably messed up with the rights.
Now, the settings are all saved in /home so reinstalling, is unlikely to solve the problem.
The only way to solve it is uninstall everything and then delete manually any remainders from /home and wherever you find any traces of LuckyBackup. You'll have to enable viewing the hiddeen files. There are many LuckyBackup profiles spread here and there.
After cleaning everything, use Synaptic Package Manager to install.
It should work.
I never had any problem, except for the first run. Take care at the paths. It supoports only one directory depth (the root directory) as target.

Good luck! :)
Title: Re: LuckyBackup not working in LL50
Post by: Moltke on August 10, 2020, 04:20:06 PM
Quote
Well, the superuser LuckyBackup always worked just fine

I'm also facing this and the only work aorund I found is run it with sudo
Code: [Select]
sudo luckybackup so as @firenice03 posted it is a bug, its not supossed to behave like that.

Quote
I use it as Root, only in exceptional situations.

Like your regular user for backing up your /home folder it woks fine but if you want to backup the whole system you need to run it as root/superuser as it's not working. It's a bug.
Title: Re: LuckyBackup not working in LL50
Post by: Şerban S. on August 10, 2020, 04:23:55 PM
I tested it for the sake of convenience:

Below, there is a screenshot:

(https://imgur.com/a/IRGsEEB)

https://imgur.com/a/IRGsEEB (https://imgur.com/a/IRGsEEB)
Title: Re: LuckyBackup not working in LL50
Post by: Şerban S. on August 10, 2020, 04:34:42 PM
[...] Like your regular user for backing up your /home folder it woks fine but if you want to backup the whole system you need to run it as root/superuser as it's not working. It's a bug.

I never use it to backup /home or / (Root). It's a waste of time and space. I use CloneZilla. I only backup with LuckyBackup my personal data, nothing else.
So, I never use the "As Root" version. I only used it once, to backup Home (it's a partition) and I was sorry. It took ages (some 15 minutes or more) and sucked me 7 GB of HDD space. Bad business! :o
A common CloneZilla backup, takes below 3 GB. Some 2,5 GB / 7GB data.
LuckyBackup is very handy for 1:1 backup tasks, since you can access files directly. And is fast enough for this kind of job. :)
(Actually, the Oscar goes to rsync, but...)

PS:
A bug? What bug?
rsync works in real time so NEVER backup the whole system, since it leads to many errors, due to system locked files. I thought you knew this. That's the second reason I never tried to backup the system with LuckyBackup. Too many files are changing too fast and this prevents rsync to do its job, whatever superuser you might be.
These are basic backup rules: never backup a running OS. Do it from a bootable backup tool. If you ever used TimeShift, I bet you noticed it works after shutting down the system and re-loading from RAM. ;)
There is a difference between being a root user and trying to copy a common file and copying a system locked file. You need to issue a special command to unlock the file, which will then conflict with systemd, for one.
You may do as you please, it's your choice, but this is how it works. It has nothing to do with me, or you or anyone else. It is just the way the OS operates.

Best regards! :)
Title: Re: LuckyBackup not working in LL50
Post by: Moltke on August 10, 2020, 04:45:30 PM
I tested it for the sake of convenience:

Below, there is a screenshot:

(https://imgur.com/a/IRGsEEB)

https://imgur.com/a/IRGsEEB (https://imgur.com/a/IRGsEEB)

As your regular user it works fine, the problem it's not working as expected when superuser mode; if you click on menu and look for  luckybackup you'll find 2 versions/modes to choose from; a regular one and  the superuser one, if you choose the luckybackup (superuser) it won't launch/start, did you try that? did it work for you? It doesn't for me, OP and a bunch of other people apparently.
Title: Re: LuckyBackup not working in LL50
Post by: Şerban S. on August 10, 2020, 04:50:51 PM

[...] the problem it's not working as expected when superuser mode;
See all previous posts. I explained there what happens.
As a matter of fact, if you read all the docs of rsync, you'll understand.
LuckyBackup is only a GUI for rsync. ;)

Good luck! :)
Title: Re: LuckyBackup not working in LL50
Post by: arky217 on August 10, 2020, 05:00:05 PM

@arky217 I would say it maybe something with LuckyBackup and Ubuntu 20.04 (LL5.0 Base)...


I did a quick google search and there does appear to be a bug - https://bugs.launchpad.net/ubuntu/+source/luckybackup/+bug/1887279


You would want to follow up with those devs...

Thank you firenice03 for that link.

I edited the command in Luckybackup (superuser) and put in  sudo -H luckybackup

Then I checked the box 'Run in terminal'.

Now when I click on the Luckybackup (superuser) icon, the terminal opens,
I enter my sudo password and LuckyBackup starts.
I created a task and backed up my Documents folder to the external drive, works fine.
Of course, I have to mount the external drive first or Luckybackup won't see it.
Title: Re: LuckyBackup not working in LL50
Post by: Moltke on August 10, 2020, 05:16:04 PM
I think I've found a solution or at least a "better" workaround; open a terminal and type
Code: [Select]
pkexec env DISPLAY=$DISPLAY XAUTHORITY=$XAUTHORITY luckybackup a window should pop up for you to type in your password and LBSU  should launch/start and if it does, open a terminal and type
Code: [Select]
sudo nano /usr/bin/luckybackup-pkexec comment the lines in the file, copy/paste the pkexec command above, hit Ctrl + o to save changes and then Ctrl + x to close nano.

(https://i.postimg.cc/tgRc5qmH/ksnip-20200810-170955.png)

Now, click on menu, search for luckybackup and click on LBSU, a window should pop up for you to type in your password, hit enter and LBSU should start without a problem, at least It did here. :)

Title: Re: LuckyBackup not working in LL50
Post by: Moltke on August 10, 2020, 05:27:21 PM

[...] the problem it's not working as expected when superuser mode;
See all previous posts. I explained there what happens.
As a matter of fact, if you read all the docs of rsync, you'll understand.
LuckyBackup is only a GUI for rsync. ;)

Good luck! :)

I saw your posts and they have nothing to do with the issue at hand, it's a known bug see here https://bugs.launchpad.net/ubuntu/+source/luckybackup/+bug/1887279 and here https://github.com/linuxmint/linuxmint/issues/277 
Yeah, I know what luckybackup is and also know what rsync is. You too. :) 
Title: Re: LuckyBackup not working in LL50
Post by: Moltke on August 10, 2020, 05:34:59 PM
Quote
There is a difference between being a root user and trying to copy a common file and copying a system locked file. You need to issue a special command to unlock the file, which will then conflict with systemd, for one.

That's not what we're talking about here, that could be another topic for a different thread. Thing is, Luckybackup(supersuser) should lauch/start whenever you click on it on the menu but it doesn't, regardless of whether or not it is a good idea to backup the entire system while it's running, which it does just fine by the way, it's been designed with that purpose in mind.
Title: Re: LuckyBackup not working in LL50
Post by: Moltke on August 10, 2020, 05:38:22 PM
@arky217 have you seen this? https://sourceforge.net/p/luckybackup/discussion/873563/thread/8463b76b07/?limit=25#6c31 Haven't tried it yet but LB developer OKes it.
Title: Re: LuckyBackup not working in LL50
Post by: arky217 on August 10, 2020, 05:47:55 PM
I think I've found a solution or at least a "better" workaround; open a terminal and type
Code: [Select]
pkexec env DISPLAY=$DISPLAY XAUTHORITY=$XAUTHORITY luckybackup a window should pop up for you to type in your password and LBSU  should launch/start and if it does, open a terminal and type
Code: [Select]
sudo nano /usr/bin/luckybackup-pkexec comment the lines in the file, copy/paste the pkexec command above, hit Ctrl + o to save changes and then Ctrl + x to close nano.

(https://i.postimg.cc/tgRc5qmH/ksnip-20200810-170955.png)

Now, click on menu, search for luckybackup and click on LBSU, a window should pop up for you to type in your password, hit enter and LBSU should start without a problem, at least It did here. :)



Moltke, the procedure I did in post #8 works fine for me, but I did start to do what you mentioned above.

But when I copied  pkexec env DISPLAY=$DISPLAY XAUTHORITY=$XAUTHORITY luckybackup
and pasted it in the terminal, I got a Warning- Unsafe Paste with the options to quit or paste.
Wasn't sure if I was about to mess something up, so I chose quit.

Did you get any warning when you entered that in the terminal ?
Title: Re: LuckyBackup not working in LL50
Post by: Moltke on August 10, 2020, 05:53:29 PM
I think I've found a solution or at least a "better" workaround; open a terminal and type
Code: [Select]
pkexec env DISPLAY=$DISPLAY XAUTHORITY=$XAUTHORITY luckybackup a window should pop up for you to type in your password and LBSU  should launch/start and if it does, open a terminal and type
Code: [Select]
sudo nano /usr/bin/luckybackup-pkexec comment the lines in the file, copy/paste the pkexec command above, hit Ctrl + o to save changes and then Ctrl + x to close nano.

(https://i.postimg.cc/tgRc5qmH/ksnip-20200810-170955.png)

Now, click on menu, search for luckybackup and click on LBSU, a window should pop up for you to type in your password, hit enter and LBSU should start without a problem, at least It did here. :)



Moltke, the procedure I did in post #8 works fine for me, but I did start to do what you mentioned above.

But when I copied  pkexec env DISPLAY=$DISPLAY XAUTHORITY=$XAUTHORITY luckybackup
and pasted it in the terminal, I got a Warning- Unsafe Paste with the options to quit or paste.
Wasn't sure if I was about to mess something up, so I chose quit.

Did you get any warning when you entered that in the terminal ?

No, I didn't get any but I didn't use xfce4-terminal but konsole and I do know xfce4-terminal does that, so it's safe to paste the command, however, if it makes you feel a bit safer, copy/paste to a text editor first then copy from that one and paste it to the terminal, it  shouldn't trigger any warnings now. It does that cause you're copying/pasting something from a web page. 
Title: Re: LuckyBackup not working in LL50
Post by: arky217 on August 10, 2020, 11:15:10 PM
I think I've found a solution or at least a "better" workaround; open a terminal and type
Code: [Select]
pkexec env DISPLAY=$DISPLAY XAUTHORITY=$XAUTHORITY luckybackup a window should pop up for you to type in your password and LBSU  should launch/start and if it does, open a terminal and type
Code: [Select]
sudo nano /usr/bin/luckybackup-pkexec comment the lines in the file, copy/paste the pkexec command above, hit Ctrl + o to save changes and then Ctrl + x to close nano.

(https://i.postimg.cc/tgRc5qmH/ksnip-20200810-170955.png)

Now, click on menu, search for luckybackup and click on LBSU, a window should pop up for you to type in your password, hit enter and LBSU should start without a problem, at least It did here. :)



Moltke, the procedure I did in post #8 works fine for me, but I did start to do what you mentioned above.

But when I copied  pkexec env DISPLAY=$DISPLAY XAUTHORITY=$XAUTHORITY luckybackup
and pasted it in the terminal, I got a Warning- Unsafe Paste with the options to quit or paste.
Wasn't sure if I was about to mess something up, so I chose quit.

Did you get any warning when you entered that in the terminal ?

No, I didn't get any but I didn't use xfce4-terminal but konsole and I do know xfce4-terminal does that, so it's safe to paste the command, however, if it makes you feel a bit safer, copy/paste to a text editor first then copy from that one and paste it to the terminal, it  shouldn't trigger any warnings now. It does that cause you're copying/pasting something from a web page.

Ok, I did as you said above and put the original command (/usr/bin/luckybackup-pkexec) back in and
unchecked the 'Run in terminal' box and yes, it starts and runs ok now without having to use the terminal.
Thank you very much.
Title: Re: LuckyBackup not working in LL50
Post by: firenice03 on August 10, 2020, 11:31:07 PM
Thank you firenice03 for that link.

I edited the command in Luckybackup (superuser) and put in  sudo -H luckybackup

Then I checked the box 'Run in terminal'.

Now when I click on the Luckybackup (superuser) icon, the terminal opens,
I enter my sudo password and LuckyBackup starts.
I created a task and backed up my Documents folder to the external drive, works fine.
Of course, I have to mount the external drive first or Luckybackup won't see it.


Quote
Ok, I did as you said above and put the original command (/usr/bin/luckybackup-pkexec) back in and
unchecked the 'Run in terminal' box and yes, it starts and runs ok now without having to use the terminal.
Thank you very much.


@arky217
Good to hear you have a couple workarounds and something suitable that works for you  :)


@Moltke
Thanks for some additional googling ;) .... gotta +1 ya  8)


I haven't used Lucky Backup, and didn't want to go too far down the rabbit hole this for that  :o



Title: Re: LuckyBackup not working in LL50
Post by: Şerban S. on August 11, 2020, 06:17:17 AM
[...] It does that cause you're copying/pasting something from a web page.

Moltke, thanks for the tip!
I always use text files for this kind of tasks, but who knows, this might prove invaluable info at some point! :)
Some editors copy the code (HTML, XML) instead of the rendered output (I saw that many times) so it's important to be aware of that! :)

Regards! :)