On 2018-06-24 at 09:36, The Wanderer wrote: > On 2018-06-24 at 09:27, Richard Owlett wrote: > >> On 06/24/2018 08:16 AM, The Wanderer wrote: >>> If you look at the "Examples" section of the man page, you'll see that >>> the first example given includes four lines which consist *only* of >>> "unknown unknown". >>> >>> From that, and from the information provided on the other lines from the >>> output examples, I infer that the output format is "vendor model". >>> (Those terms are listed under the third example, "Get model and vendor >>> information by type".) >>> >>> In other words: this line represents a device of an unknown model, from >>> an unknown vendor. >>> >>> (All of that is my inference and interpretation, not based on anything >>> more solid. Even assuming I've got it right, I agree that the man page >>> could be clearer about this.) >> >> Except [ <grin> &/or <groan> ], lsusb reports: >>> Bus 004 Device 062: ID 067b:25a1 Prolific Technology, Inc. PL25A1 Host-Host Bridge >> The "067b" is Vendor ID. >> The "25a1" identifies a particular device of that manufacturer. > > Yes; that's for the Prolific Technology device. > > As indicated by the fact that the man-page examples put "unknown > unknown" on a separate line, I think that "unknown unknown" represents a > completely separate device; I don't think it's related to the Prolific > Technology device at all. I think the fact that they appeared on one > line in your mail is an artifact of a line-wrapping mistake somewhere in > the process. Try: discover --vendor-id --model-id -t | grep unknown That should give you the comparable IDs for your unknown device. -- The Wanderer The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man. -- George Bernard Shaw
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