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If a hub is involved, my first suspicion is always power.
+5V ain't what is used to be (says an old time engineer).
You know where to put the multimeter prods...
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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I am a Linux fan, does Windows have an application to actually monitor / reed / guess the USB device power "in use " ?
Never seen such app in Linux, but did not bother to look for it.
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Just had a dig and found my USB power meter!
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As an electronics/hardware guy replying to another, I was suggesting a physical measurement, and comparison between the two physical environments.
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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I know, but if it's the bus power...
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Slot in a powered hub?
Or I think they still make power injectors - signals straight through, solid +5 comes in the side.
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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It's sometimes hard to say what is windows versus what is a device manufacturer doing something in their driver.
I'm pretty sure I have had Windows 10 tell me I was pulling too much current on the USB and shut the port down temporarily (not a timer - it tells you to go turn it back on if it's OK).
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Yup! 5.00 ish, Plugged into a dodgy hub... Interesting unit can crash and not appear as a com port...
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Since I've been working with usbser.sys (>10 years), I've repeatedly encountered problems with the part. Since W10/11, power management has also been added to usbser.sys. This could be a cause of your problem; It's best to turn it off if possible.
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Thank You! Got Senior to read this! with your reply I can prove it's not my program causing issues!
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glenn, it's simpler than that... as soon as I get out of a meeting, I'll give you more details. Lived this for 20 years
Charlie Gilley
“They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.” BF, 1759
Has never been more appropriate.
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When I post here , asking for help
do I have to spell it out ?
"...I am looking for a solution..."
is it not obvious?
or is this forum now a " social media chat " box?
Reason for THIS post
I have recently experienced a "reply" which basically
restated / reformatted my post
and did not actually offered a solution.
End of rant
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The members of this community all help others for free on their own time, so the help you get can range from amazing to...not always amazing. We, generally, try though.
If there's a response to one of your questions that's inappropriate you can vote it down. If there's a response which is trying to help you format a question in a way that makes it easier for others to answer then that can be helpful.
Without knowing the post I can't really address your specific complaint.
cheers
Chris Maunder
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I do appreciate you taking time and respond.
As noted - it was a rant...
It is normal to meet people with different attitude, and
I do not believe judging, pointing out specific
would be helpful, mainly because when the one who acquires attitude " I am better then you are "
is generally immune to any suggestions to change.
I have been using and (sometime ) abusing this forum for years and most of the time the discussions have been on very professional level and helpful.
And I do appreciate that.
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Salvatore Terress wrote: or is this forum now a " social media chat " box?
Ther lounge? Definitively Yes.
Look at the top of this board.Quote: Welcome to the Lounge
For discussing anything related to a software developer's life but is not for programming questions. Got a programming question?
The Lounge is rated Safe For Work. If you're about to post something inappropriate for a shared office environment, then don't post it. No ads, no abuse, and no programming questions. Trolling, (political, climate, religious or whatever) will result in your account being removed.
The "got a programming question" in red is a link that brings you to the correct place to ask.
M.D.V. 
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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Salvatore Terress wrote: and did not actually offered a solution.
Maybe there isn't a simple solution. Or perhaps your question was not clear enough for anyone to figure out what it was all about.
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You must agree that you regularly see cases - I am not excluding CP here - where other readers are so eager to 'help' that they do not waste the time to read the entire problem description before writing down their 'contribution'.
I have learned to start my problem descriptions with a declaration of what is not my problem: E.g. I am not looking for an alternative to tool X, I am just using tool X to illustrate a general problem, and that is what I want to solve! Spelling that out in a conclusive remark is almost useless; half of the readers won't notice it. Also I have learned to be very explicit about the core of my problem, always phrasing it as a question, preferably prefixed with 'My problem is this: ... ?' - otherwise, helpers might expand to great length on any detail that you have mentioned, but only to explain the problem, not as the problem.
Having lots of people eager to help you is a great thing - and one major reason why I stick with CP. Everything comes with a price, like a fair share of 'helpful' answers that serves more to display helpfulness than to be of real help. I think that is a moderate price to pay. Others may have higher expectations. Maybe they should try SO. Maybe they return to CP after a week or a month  . (I did.)
Religious freedom is the freedom to say that two plus two make five.
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OP is well known for poorly phrased questions and complaining that he doesn't get a good enough service.
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I agree 100%, which is why I do not offer help to the OP anymore. If one is to look at the enormous amount of questions asked it qualifies the OP as a NCV (not explaining this) to a point where it seems that we are a free lecturing institute offering, irrespective if it is time given of our own!
It now seems that it is expected of anyone who is willing to help to do so as if there is a salary involved or else... - totally disgusting. 
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trønderen wrote: where other readers are so eager to 'help' that they do not waste the time to read the entire problem description before writing down their 'contribution'.
Ah, I see you're familiar with SO's Standard Operating Procedure. 
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I will expect flaming repose , but I " all I know I learn at kindergarten " comes to mind...
This forum have very simple and pointed "rules" about working with non English speaking folks, likes me.
There is a part about "read the post "...
and that is too far down the rules list for SOME English speaking folks to read...
Unfortunately there is nada a'bout conversing with
people of different levels of TECHNICAL knowledge.
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All feedback / answers have to be "taken with a grain of salt".
I've had to develop very thick skin because I post a lot of questions on StackOverflow and most of the time they are down-voted, answer incorrectly etc.
Check out this one which the person answered completely wrong and tried to say I was wrong[^].
In the end, I discovered the answer myself and wrote it up for myself.
I actually once posted a question to electronics.stackexchange.com (where the "engineers" tolerate nothing outside of their understanding) about why electrolytic capacitors are rated for higher voltage as the capacitance (measured in farads (uF, pF, etc) goes down.
Not only did they not answer it, they deleted my question entirely and it had taken me a long while to write up the question and I wish I still had that question because it was interesting.
I know that it must also be infinitely more difficult when there is a language difference involved also. Hope you get things worked out.
If you get a chance, check this one out where I answered the question correctly but got down-voted and then the person tried to tell me why my working code was wrong. it was ridiculous.
https://stackoverflow.com/questions/46075228/get-http-response-status-code-of-urlsession-shared-datatask/78078754#78078754[^]
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I will say to your defense:
Most IT people (or you could make it more general, if you like: Most people with a university degree) are very poor at explaining a problem within their field of expertise to someone outside the field. Their advanced knowledge stands in the way.
Even when I ask my co-workers to explain something (I have a Master in Comp.Sci), I may have to guide them through their explanation, telling them 'First, explain how this part works, we'll take the rest afterwards', rather than everything messed up. They use terms that are specific to the stuff they are trying to explain, without explaining the term, and I have to stop them and demand an explanation. When they introduce some 'concept', I ask questions about how this concept differs from this and that older and well known concept. And so on. A good teacher/lecturer would structure his presentation, explain terms, refer to related, known stuff, and adapt the presentation to whatever background the audience has.
Most IT people just opens the sluice gates to let their immense flood of advance knowledge drown you. When the audience doesn't understand a word, the IT expert usually blames the audience  Unfortunately, publishing books is so cheap nowadays that you see the same in a lot of IT books: You senses that the author is really knowledgeable, but the explanations are outright terrible. Sometimes, the better you know the subject area yourself, the more you see how bad the presentation is, how bad the examples are.
Wikipedia is certainly no exception (in many articles, not all): When I try to make sense of them, I often ask myself: Is there a single person in the world who will understand this - and also will look it up in Wikipedia? If it takes a Master to understand the article, then you probably learned enough in your studies that you know all the stuff in the article!
Some textbook authors are excellent. Some academics, even IT people, have an impressing ability to make even complex issues look easy and obvious to a lesser qualified audience. I wish we had a lot more of those. As long as that is not the case, we will have to cope with explanations that requires a lot of work to be deciphered. Sometimes you ask supplementary questions; sometimes the answer gives you the proper keywords for a google search for more understandable explanations. We won't run into those great pedagogics all the time, and have to live with it.
Religious freedom is the freedom to say that two plus two make five.
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trønderen wrote: Some textbook authors are excellent. Some academics, even IT people, have an impressing ability to make even complex issues look easy and obvious to a lesser qualified audience.
A personal story from way back when:
In my third Uni third year, we had an Electronics course and everyone said if you pass it, it's almost like having the diploma in your pocket. The amazing part was that after every course I would come out convinced I understood everything but when I would read the course again I would realize I don't have a clue. Took me a while to figure out the trick the teacher was using. He would insist on simple things until you realized how obvious they were and just gloss over complicated stuff. Almost like saying "you see 2 plus 2 equals 4 because if you take 2 fingers and 2 fingers that makes 4 fingers... and, by the way, the Laplacian of the electric field in the junction is given by this differential equation...".
He had an impressing ability of masking the the complicated things in deceptive simplicity. Although I passed the course, cannot say I enjoyed it.
Mircea
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