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Old 10-25-2013, 12:24 PM   #1
Kirsten
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Registered: Aug 2012
Distribution: Ubuntu
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Problems with USB 3.0 plug & play


I'm having similar trouble. My USB 2.0 ports, plus two of my four 3.0 ports, allow access to external drives, etc. But I have two USB 3.0 ports, at the front of the CPU, that seem not to "work," by which I mean that nothing plugged into them shows up in my GUI file manager; I'm not able to use them. I'd really like to be able to use the ones at the front, since they're more convenient.

As suggested by markush, I ran
Code:
$ ls /dev/sd*
/dev/sda  /dev/sda1  /dev/sda2  /dev/sda5  /dev/sda6  /dev/sdb  /dev/sdb1
I plugged a USB 3.0-compatible memory stick into one of the 3.0 ports at the rear, and the ran the command again:
Code:
$ ls /dev/sd*
/dev/sda   /dev/sda2  /dev/sda6  /dev/sdb1  /dev/sdc1
/dev/sda1  /dev/sda5  /dev/sdb   /dev/sdc
I'm confused about what this means. Apparently, ports show up only if something's plugged into them?

I don't know how to identify the ports at the front of the machine, and so I don't know how to specify them for mounting.

Help?

Thanks.
 
Old 10-25-2013, 12:31 PM   #2
markush
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Registered: Apr 2007
Location: Germany
Distribution: Slackware
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Hi,

this would mean that your USB-memory-stick has been recognized by the system and is available as /dev/sdc1 (which is the only partition on the stick). You can mount it to an empty directory with the following command (first command creates an empty directory in /media)
Code:
sudo mkdir /media/myUSBMemoryStick
sudo mount /dev/sdc1 /media/myUSBMemoryStick
Afterwards it should be shown in your filemanager. Note that you will probably need sudo because in general mounting a device needs roots-permitions.

Markus
 
Old 10-25-2013, 12:52 PM   #3
Kirsten
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Registered: Aug 2012
Distribution: Ubuntu
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I don't understand. /dev/sdc1 appears already to be mounted and working, simply by plugging the stick into the port at the rear of the CPU. What I want is to be able to use the stick on the ports at the front of the CPU.

Are you saying I should execute those commands while the stick is plugged in at the back, where I have no trouble? Would that make the stick then become recognizable when I plug it into the front ports?

Or should I plug it into one of the ports at the front, where it doesn't show up in GUI file manager, and execute the commands with it there?

Thanks!
 
Old 10-25-2013, 12:59 PM   #4
markush
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Registered: Apr 2007
Location: Germany
Distribution: Slackware
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Well, I didn't understand that you'r problem are the frontside ports of your computer. You should check if the ports are correctly connected inside the computer.

Do you have Windows? do they work with Windows?

Another questions, which kernel do you have? you can check this on a terminal with
Code:
uname -r
Are the ports front and rear both USB-3.0? maybe that only the USB-3.0 Ports are not recognized?

Markus
 
1 members found this post helpful.
Old 10-25-2013, 01:11 PM   #5
Kirsten
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Registered: Aug 2012
Distribution: Ubuntu
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I don't have Windows, not since I got persuaded to forsake XP.

kernel: 3.8.0-31-generic

USB 2.0 ports are only on the rear of the CPU. Of 3.0 ports, there are two at the front and two at the rear. The ones at the rear "work"; my USB stick is recognized and can be accessed through them. The ones at the front have never allowed access to any 3.0-enabled device (or any 2.0-enabled device, for what that's worth).

It does seem like the next step is to open the CPU and check connections. I'll report back.

Thanks for your help!
 
  


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