The instructions on what command to install is based on the operating system. dnf is red hat based, apt debian based and pacman arch based. Once the tools are installed you can then move on to the next step to access the player.
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Just an fyi, this is my mp3 player i'm trying to get to work:
https://www.onbuy.com/gb/sandisk-cli...235~p18641292/

Please see post #15 and please help me to type the right thing into terminal...

@kernelhead, pacman is arch linux.

Why don't you stop and read the docs for your distro. So that you know how to use it.

The first thing you need to do it find out what file system that player has on it. You can't know how to mount an external device until you know what it is.

If it is a mtp device, then you can use any number of mtp tools to mount it to a directory. Or plugins for a file manager to do it.

gvfs-mtp apparently allows a file manager that uses it to auto mount a mtp device.

https://askubuntu.com/questions/8766...rk-with-ubuntu

https://docs.ubuntu.com/
https://help.ubuntu.com/
https://manpages.ubuntu.com/manpages...n7/gvfs.7.html

Sorry, but I'm slowly learning the file system. I know my name doesn't reflect on how amateur I am at the command lines. But I try. I will go study the links you gave me.

Right now, I just need to do this step right:

After doing some things on your links I did get this far:

I don't know where you got that from. That a mix mess of something. pacman is arch linux's package manager. apt is ubuntu.

This is your device.
You could also get that with dmesg -W then plug the device in.

Info:
I don't have any gvfs installed. I'd rather mount something, then unmount it and have it done.

So look at your docs for it.

libmtp says no devices found.

Edit:
You can get more info with:

Hmmmmm.... SDDR-99 V4 ImageMate 5-in-1 Reader
Shouldn't it look more likeCould it be that: your mp3 is in the mode of presenting as just an SD card reader, and there's no SD card inserted in your mp3?
Or might you have this separate SD card reader device plugged in elsewhere?

Is your mp3 plugged in, with a good cable?

Do you have an mtp-detect program? See: (esp end)
https://forums.linuxmint.com/viewtop...919304#p919304


Here's an analogy about the 3 package managers:
Think of: apt as human food, dnf as dog food, & pacman as horse food.
Only apt is good for your system! dnf or pacman could actually make your system very sick!

In above post it does say Sandisk, which is the mp3 player. I'm gonna do your command lines now.

I visited that link and couldn't understand it much.

Right now I need someone to baby feed me as to what exactly to type into terminal, stating it in Ubuntu phrasing.
Also, my Sandisk mp3 player doesn't have a "USB mode" like in one of the links.

On Ubuntu forums they think my mp3 player is faulty.

Is that the case?

It's possible. Try plugging it into a windows box and see what happens. If your mp3 player is still undetected, the problem is with the player or your cable. If windows is also having issues with your player, just googling a bit will show you others have had similar problems. See:

https://forums.sandisk.com/t/cant-fo...sa-sport/68548

You may also have connection issues if the player has been inadvertently locked or is stuck in locked mode. The manual says to force an unlock, press and hold the power on button for twenty seconds. You can try that and see if it helps.

If things are working OK in windows but not linux, there are a few things to look at. First, I also have a similar Sandisk mp3 player and it does not use mtp for connection. It connects like an ordinary flash drive via usb and there is no option to connect via mtp. Looking through the manual for your device, I don't see any option to choose connection mode, i.e. mtp or usb mass storage device. I suspect your mp3 player probably connects the same way as a usb mass storage device. Accordingly, trying to connect via mtp is probably not going to work. Second, you can get some clue as to what's happening by connecting your mp3 player and running:
Post the output here. This will tell you if the player is detected and if there are connection problems. Finally, you could try doing a factory reset as described in my above link and see if that helps. It has to be done with Sandisk's special application which is windows only.

Excuse my tossing in my thoughts here.
I think more troubleshooting logic, rather than additional new commands are needed.

Focus on lsusb. If you unplug it, is that SanDisk 5 in 1 thing still there? Probably.

Is there any difference with it plugged in or not plugged in?

Could it be that there's something wrong with the cable or where you're plugging it in?

Do you actually have any other computers with any OS to try it on, or anybody that you know, where you could physically try it?

When something impossible, like not seeing it, seems to be happening, maybe it really isn't, meaning you'll be shocked when you discover the actual cause!

before turning on

And after turning on and unplugging and pluggion back in to usb

here is lsusb before turning it on and still plugging it in, then i turned it on and plugged it in twice and did lsusb again, see below:

ALSO , note the sandisk that shows up is probably my card reader for my camera & not the sandisk mp3 player

also,