[fedora-arm] User cannot mount USB device - Fedora-Xfce-armhfp-29-20180911.n.0-sda

Discussion:

Robert Moskowitz

2018-09-12 23:04:03 UTC

Cubieboard2

On my Xfce desktop (well VNCed into it) as me. I inserted a usb
device. It shows up as an icon in tghe workspace. I go to mount it and
get "Not authorized to perform operation".

Nothing interesting on the console:

[ 2525.137522] usb 1-1: new high-speed USB device number 3 using
ehci-platform
[ 2525.283687] usb 1-1: New USB device found, idVendor=0951,
idProduct=1603, bcdDevice= 2.00
[ 2525.292069] usb 1-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 2525.299380] usb 1-1: Product: DataTraveler 2.00000025168
[ 2525.304990] usb 1-1: Manufacturer: Kingston
[ 2525.309342] usb 1-1: SerialNumber: 0000025168
[ 2525.645759] usb-storage 1-1:1.0: USB Mass Storage device detected
[ 2525.658504] scsi host1: usb-storage 1-1:1.0
[ 2525.663628] usbcore: registered new interface driver usb-storage
[ 2525.737957] usbcore: registered new interface driver uas
[ 2526.731250] scsi 1:0:0:0: Direct-Access Kingston DataTraveler 2.0
1.00 PQ: 0 ANSI: 2
[ 2526.752509] sd 1:0:0:0: Attached scsi generic sg1 type 0
[ 2526.752591] sd 1:0:0:0: [sdb] 1952256 512-byte logical blocks: (1000
MB/953 MiB)
[ 2526.776457] sd 1:0:0:0: [sdb] Write Protect is off
[ 2526.797671] sd 1:0:0:0: [sdb] No Caching mode page found
[ 2526.803174] sd 1:0:0:0: [sdb] Assuming drive cache: write through
[ 2526.835704] sdb:
[ 2526.844064] sd 1:0:0:0: [sdb] Attached SCSI removable disk

what do I have to do so a user can mount a USB device?

thanks
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Peter Robinson

2018-09-13 07:19:56 UTC

Permalink

Robert,

I'm not replying to all your emails as I suspect the problem is the
same for all 3.

Generally in Linux a remote user by default won't get access to local
devices. I'm not sure in the case of VNC but in the vast majority of
cases remote desktops will have emulated devices that access the users
local device for that functionality.

In all cases can you access the devices when logged in locally on the machine?

If they work when logged in locally it's due to PolicyKit and the
xfce-polkit package and it's a security feature, not a bug.

Peter

Post by Robert Moskowitz
Cubieboard2
On my Xfce desktop (well VNCed into it) as me. I inserted a usb
device. It shows up as an icon in tghe workspace. I go to mount it and
get "Not authorized to perform operation".
[ 2525.137522] usb 1-1: new high-speed USB device number 3 using
ehci-platform
[ 2525.283687] usb 1-1: New USB device found, idVendor=0951,
idProduct=1603, bcdDevice= 2.00
[ 2525.292069] usb 1-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 2525.299380] usb 1-1: Product: DataTraveler 2.00000025168
[ 2525.304990] usb 1-1: Manufacturer: Kingston
[ 2525.309342] usb 1-1: SerialNumber: 0000025168
[ 2525.645759] usb-storage 1-1:1.0: USB Mass Storage device detected
[ 2525.658504] scsi host1: usb-storage 1-1:1.0
[ 2525.663628] usbcore: registered new interface driver usb-storage
[ 2525.737957] usbcore: registered new interface driver uas
[ 2526.731250] scsi 1:0:0:0: Direct-Access Kingston DataTraveler 2.0
1.00 PQ: 0 ANSI: 2
[ 2526.752509] sd 1:0:0:0: Attached scsi generic sg1 type 0
[ 2526.752591] sd 1:0:0:0: [sdb] 1952256 512-byte logical blocks: (1000
MB/953 MiB)
[ 2526.776457] sd 1:0:0:0: [sdb] Write Protect is off
[ 2526.797671] sd 1:0:0:0: [sdb] No Caching mode page found
[ 2526.803174] sd 1:0:0:0: [sdb] Assuming drive cache: write through
[ 2526.844064] sd 1:0:0:0: [sdb] Attached SCSI removable disk
what do I have to do so a user can mount a USB device?
thanks
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Robert Moskowitz

2018-09-13 14:33:42 UTC

Permalink

Peter,

I will test this.

I have a ClearOS6 server with Gnome that I have accessed for years via
VNC and have accessed USB drives all the time. But that is ClearOS and
their setup, so I may have wrong expectations. So let's see...

Oh, wait. I log in as root over VNC to the ClearOS box and that may be way.

Bob

Post by Peter Robinson
Robert,
I'm not replying to all your emails as I suspect the problem is the
same for all 3.
Generally in Linux a remote user by default won't get access to local
devices. I'm not sure in the case of VNC but in the vast majority of
cases remote desktops will have emulated devices that access the users
local device for that functionality.
In all cases can you access the devices when logged in locally on the machine?
If they work when logged in locally it's due to PolicyKit and the
xfce-polkit package and it's a security feature, not a bug.
Peter

Paul Whalen

2018-09-13 14:56:36 UTC

Permalink

----- Original Message -----

It worked for me when testing the Xfce image on the Banana Pi.

Post by Peter Robinson
If they work when logged in locally it's due to PolicyKit and the
xfce-polkit package and it's a security feature, not a bug.
Peter

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Robert Moskowitz

2018-09-13 15:03:05 UTC

Permalink

Post by Paul Whalen
----- Original Message -----

It worked for me when testing the Xfce image on the Banana Pi.

Do you locally, not remotely?

Also I have to get Xfce running locally. I thought I could just issue
startx or startxfce4 from the command line, but that failed. Any suggestion?

Alternatively, how do I change back from multi-user target. I suppose I
can google that. But can it be done temporarily?

Post by Paul Whalen

Post by Peter Robinson
If they work when logged in locally it's due to PolicyKit and the
xfce-polkit package and it's a security feature, not a bug.
Peter

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Peter Robinson

2018-09-13 15:14:10 UTC

Permalink

Post by Robert Moskowitz

Post by Paul Whalen

Post by Peter Robinson
I'm not replying to all your emails as I suspect the problem is the
same for all 3.
Generally in Linux a remote user by default won't get access to local
devices. I'm not sure in the case of VNC but in the vast majority of
cases remote desktops will have emulated devices that access the users
local device for that functionality.
In all cases can you access the devices when logged in locally on the machine?

It worked for me when testing the Xfce image on the Banana Pi.

Do you locally, not remotely?
Also I have to get Xfce running locally. I thought I could just issue
startx or startxfce4 from the command line, but that failed. Any suggestion?

The way to do this is to enable lightdm and the graphical target in systemd

Post by Robert Moskowitz
Alternatively, how do I change back from multi-user target. I suppose I
can google that. But can it be done temporarily?

Post by Paul Whalen

Post by Peter Robinson
If they work when logged in locally it's due to PolicyKit and the
xfce-polkit package and it's a security feature, not a bug.
Peter

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Robert Moskowitz

2018-09-13 15:38:36 UTC

Permalink

Post by Peter Robinson

Post by Robert Moskowitz

Post by Paul Whalen

It worked for me when testing the Xfce image on the Banana Pi.

Do you locally, not remotely?
Also I have to get Xfce running locally. I thought I could just issue
startx or startxfce4 from the command line, but that failed. Any suggestion?

The way to do this is to enable lightdm and the graphical target in systemd

From the console, I tried:

systemctl start display-manager

And the local connection was logged in and the screen seemed to try and
go into Xfce, but nothing happened. So I power cycled, and right away
from the console started display-manager. This time the local login
prompt went away and eventually got the Xfce login dialog.

Boy is local Xfce slow on this Cubieboard2! Going to have to try it on
my Cubietruck to see if it is a matter of memory (same A20 chip).

Post by Peter Robinson

Post by Robert Moskowitz
Alternatively, how do I change back from multi-user target. I suppose I
can google that. But can it be done temporarily?

Post by Paul Whalen

Post by Peter Robinson
If they work when logged in locally it's due to PolicyKit and the
xfce-polkit package and it's a security feature, not a bug.
Peter

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Robert Moskowitz

2018-09-13 16:02:13 UTC

Permalink

Score: 2 out of 3.

USB devices can be accessed locally. Also K3B works! (see bug 1583845)

No Audio, even worst. Parole starts to play, but does not advance. No
playing at all. Some alsa problem. I tried the USB audio device and it
shows in the controls, but Parole does not provide an option to select
audio output device.

So back to the USB. Got to find a way to set the security to allow a
remote user (at lease one in Wheel group?) access. Recommendations
welcomed, and I will try googling some.

Post by Peter Robinson
Peter