After having spilled way too many cups of coffee on my old keyboard, I
swapped it out for an AST keyboard (with a QC sticker from 2020).

Works fine except when it doesn't.
The USB seems to fall asleep.

When I reboot, the USB is asleep every time.
When I leave it running overnight (the CPU never sleeps as it used to not
wake up so I have sleeping & hibernation all turned off), it goes asleep.

Why?

To wake it up, every time, all I need to do is unplug & replug the USB.
But why?

I know it's asleep because I can type away with abandon & nothing happens.
I know it's awake because when I unplug/replug, I hear the familiar sound.

Is there a software wakeup command?

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On Sun, 6/1/2025 7:32 AM, Randy Jones wrote:

After having spilled way too many cups of coffee on my old keyboard, I swapped it out for an AST keyboard (with a QC sticker from 2020).

Works fine except when it doesn't.
The USB seems to fall asleep.

When I reboot, the USB is asleep every time.
When I leave it running overnight (the CPU never sleeps as it used to not wake up so I have sleeping & hibernation all turned off), it goes asleep.

Why?

To wake it up, every time, all I need to do is unplug & replug the USB.
But why?

I know it's asleep because I can type away with abandon & nothing happens.
I know it's awake because when I unplug/replug, I hear the familiar sound.

Is there a software wakeup command?

It's most likely to be a bad hardware design. In some way.

You can look at this.

https://helpdesk.flexradio.com/hc/en-us/articles/204290929-How-to-Disable-Power-Management-for-USB-connected-Devices

"Selective Suspend"

Uwe has tried to restart a very tiny part of the USB hardware,
but this is not indicative of a general (even fix a keyboard) utility.
These storage type issues have seen more work, than other
kinds of USB hardware types.

https://www.uwe-sieber.de/drivetools_e.html

RestartSrDev V3.1 - restarts "Safely Removed" devices which have the "Code 21" or "Code 47" problem code

I think a bottom line observation, is if the computer has
PS/2 and you own a PS/2 capable keyboard, then that is going
to be more reliable than a raft of USB issues of one sort or
another. PS/2 is a really dumb interface, and "it works".

Paul

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On 2025/6/1 18:50:12, Paul wrote:
[]

"Selective Suspend"

Uwe has tried to restart a very tiny part of the USB hardware,
but this is not indicative of a general (even fix a keyboard) utility.
These storage type issues have seen more work, than other
kinds of USB hardware types.

https://www.uwe-sieber.de/drivetools_e.html

RestartSrDev V3.1 - restarts "Safely Removed" devices which have the "Code 21" or "Code 47" problem code

(I wonder if that would have sorted out the problem I had with my
printer a few days ago? It ran out of paper, and Windows 10 knew that -
but when I put some more in, and the printer's own display panel
indicated it was happy [I even cycled its power - and, I think, the
laptop's], Windows still thought it was out of paper. [I was not alone,
when I searched.] I can't remember what I did to get it going again.)

I think a bottom line observation, is if the computer has
PS/2 and you own a PS/2 capable keyboard, then that is going
to be more reliable than a raft of USB issues of one sort or
another. PS/2 is a really dumb interface, and "it works".

Paul

And, it doesn't use up a USB port.
(It isn't hot-pluggable, though - it has to be present at boot.)
--
J. P. Gilliver. UMRA: 1960/<1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf


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On Sun, 6/8/2025 7:26 AM, J. P. Gilliver wrote:

On 2025/6/1 18:50:12, Paul wrote:
[]

ÿÿÿ "Selective Suspend"

Uwe has tried to restart a very tiny part of the USB hardware,
but this is not indicative of a general (even fix a keyboard) utility.
These storage type issues have seen more work, than other
kinds of USB hardware types.

https://www.uwe-sieber.de/drivetools_e.html

ÿÿÿ RestartSrDev V3.1 - restarts "Safely Removed" devices which have the "Code 21" or "Code 47" problem code

(I wonder if that would have sorted out the problem I had with my printer a few days ago? It ran out of paper, and Windows 10 knew that - but when I put some more in, and the printer's own display panel indicated it was happy [I even cycled its power - and, I think, the laptop's], Windows still thought it was out of paper. [I was not alone, when I searched.] I can't remember what I did to get it going again.)

I think a bottom line observation, is if the computer has
PS/2 and you own a PS/2 capable keyboard, then that is going
to be more reliable than a raft of USB issues of one sort or
another. PS/2 is a really dumb interface, and "it works".

ÿÿ Paul

And, it doesn't use up a USB port.
(It isn't hot-pluggable, though - it has to be present at boot.)

Usually for printers, there is a status dialog somewhere, which
is the Windows spool server, and giving that a flick ought to have
been enough. I do have a printer now, but I use it once a year
(to print off taxes) :-) I tend to forget the details. And I don't
think stuffing paper in the printer and making LCD happy, was enough.
And that was on a long USB cable to the kitchen table (room for
temporary printing there).

Paul

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