no name mouse?

no name mouse?

[James]

$ lsusb -tv
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
     ID 1d6b:0003 Linux Foundation 3.0 root hub
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
     ID 1d6b:0002 Linux Foundation 2.0 root hub
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
     ID 1d6b:0003 Linux Foundation 3.0 root hub
     |__ Port 3: Dev 4, If 0, Class=Mass Storage, Driver=uas, 5000M
         ID 0bc2:ab5a Seagate RSS LLC
     |__ Port 4: Dev 3, If 0, Class=Mass Storage, Driver=uas, 5000M
         ID 0bc2:2321 Seagate RSS LLC Expansion Portable
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 480M
     ID 1d6b:0002 Linux Foundation 2.0 root hub
     |__ Port 5: Dev 4, If 0, Class=Human Interface Device, 
Driver=usbhid, 1.5M
         ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
     |__ Port 5: Dev 4, If 1, Class=Human Interface Device, 
Driver=usbhid, 1.5M
         ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
     |__ Port 6: Dev 3, If 0, Class=Human Interface Device, 
Driver=usbhid, 1.5M
         ID 30fa:0400

Port 6 Dev 3 is the mouse I bought from Amazon.
Why doesn't have a name beside it?

Re: no name mouse?

[Randy Dunlap]

On 1/10/22 18:48, James wrote:
> $ lsusb -tv
> /:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
>     ID 1d6b:0003 Linux Foundation 3.0 root hub
> /:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
>     ID 1d6b:0002 Linux Foundation 2.0 root hub
> /:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
>     ID 1d6b:0003 Linux Foundation 3.0 root hub
>     |__ Port 3: Dev 4, If 0, Class=Mass Storage, Driver=uas, 5000M
>         ID 0bc2:ab5a Seagate RSS LLC
>     |__ Port 4: Dev 3, If 0, Class=Mass Storage, Driver=uas, 5000M
>         ID 0bc2:2321 Seagate RSS LLC Expansion Portable
> /:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 480M
>     ID 1d6b:0002 Linux Foundation 2.0 root hub
>     |__ Port 5: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
>         ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
>     |__ Port 5: Dev 4, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
>         ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
>     |__ Port 6: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
>         ID 30fa:0400
> 
> Port 6 Dev 3 is the mouse I bought from Amazon.
> Why doesn't have a name beside it?

USB 2.0 spec, section 9.6.7 String (descriptors):

"""
String descriptors are optional. As noted previously, if a device does not support string descriptors, all
references to string descriptors within device, configuration, and interface descriptors must be reset to zero.
"""

so whoever manufactured this device chose to leave it with no Mfr/Product name strings,
i.e., it's a generic device.

You could look at 'lsusb -v' for that device and then look at these fields:
(e.g., from a "transceiver" device for a wireless kbd/mouse)

  iManufacturer           1 Dell Computer Corp
  iProduct                2 Dell Universal Receiver
  iSerial                 0 

You should see iManufacturer and iProduct set to 0.

-- 
~Randy

Re: no name mouse?

[James]

> You could look at 'lsusb -v' for that device and then look at these fields:
> (e.g., from a "transceiver" device for a wireless kbd/mouse)
>
>    iManufacturer           1 Dell Computer Corp
>    iProduct                2 Dell Universal Receiver
>    iSerial                 0
>
> You should see iManufacturer and iProduct set to 0.
>
iManufacturer           0
iProduct                1 USB OPTICAL MOUSE

Re: no name mouse?

[Greg KH]

On Tue, Jan 11, 2022 at 07:56:00PM -0500, James wrote:
> 
> > You could look at 'lsusb -v' for that device and then look at these fields:
> > (e.g., from a "transceiver" device for a wireless kbd/mouse)
> > 
> >    iManufacturer           1 Dell Computer Corp
> >    iProduct                2 Dell Universal Receiver
> >    iSerial                 0
> > 
> > You should see iManufacturer and iProduct set to 0.
> > 
> iManufacturer           0
> iProduct                1 USB OPTICAL MOUSE

That's a fine string for the device, there's no requirement for any
string at all, but at least it has one.

So all is good.

thanks,

greg k-h

Re: no name mouse?

[Alan Stern]

On Mon, Jan 10, 2022 at 09:48:56PM -0500, James wrote:
> $ lsusb -tv
> /:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
>     ID 1d6b:0003 Linux Foundation 3.0 root hub
> /:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
>     ID 1d6b:0002 Linux Foundation 2.0 root hub
> /:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
>     ID 1d6b:0003 Linux Foundation 3.0 root hub
>     |__ Port 3: Dev 4, If 0, Class=Mass Storage, Driver=uas, 5000M
>         ID 0bc2:ab5a Seagate RSS LLC
>     |__ Port 4: Dev 3, If 0, Class=Mass Storage, Driver=uas, 5000M
>         ID 0bc2:2321 Seagate RSS LLC Expansion Portable
> /:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 480M
>     ID 1d6b:0002 Linux Foundation 2.0 root hub
>     |__ Port 5: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid,
> 1.5M
>         ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
>     |__ Port 5: Dev 4, If 1, Class=Human Interface Device, Driver=usbhid,
> 1.5M
>         ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
>     |__ Port 6: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid,
> 1.5M
>         ID 30fa:0400
> 
> Port 6 Dev 3 is the mouse I bought from Amazon.
> Why doesn't have a name beside it?

Because there is no entry for that vendor/product ID in the udev/systemd 
hardware database.  See "man hwdb" and "man systemd-hwdb", and also the 
files in /usb/lib/udev/hwdb.d.  Near the top of the 70-mouse.hwdb file 
in that directory are instructions on how to submit a new ID for 
inclusion in the database.

Alan Stern