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Keyboard inconsistent behavior upon wake from sleep using it
Symptoms
- PC will not wake up using keyboard.
- Keyboard flashes upon key press in sleep.
- Keyboard starts lighting upon key press in sleep.
- This occurs only if PC is in sleep for a longer time.
Details
As far as I remember on my previous PC was quite common that PC did not wake up from sleep using keyboard key pressure. In that case mouse click worked perfectly all the time. I did not consider that such an issue that time.
Now I have new computer with new keyboard that has RGB lights. I observe the same behavior as on previous one – after long sleep, PC is unwakeable using keyboard. Keyboard is RGB and it performs some magic upon failed wake. I suppose I would have been observing the same magic on old PC if I have had RGB keyboard that time. Now this issue comes displeasant beyond reasonable limit.
Is there any solution? What should be cause of this?
More details
Keyboard and mouse are both USB cable device. On the other hand old PC keyboard and mouse are one wireless USB set. In both cases mouse works all the time while keyboard not.
Windows 10.
Ucho
Posted 2020-02-06T23:09:57.343
Reputation: 135
1"This occurs only if PC is in sleep for a longer time." Turn off Hybrid Sleep (advanced power options) and the regular sleep will be consistent – John – 2020-02-07T00:11:39.810
Hybrid Sleep is set to prevent state lost on power interruptions. I’ll consider this. Why is this caused by that? – Ucho – 2020-02-07T10:06:37.150
1Hybrid sleep is close to hibernation and that is why (I am fairly sure) once in deeper sleep, it does not wake up the simple way unsuspending works. Hybrid sleep is supposed to maintain all settings and operations and that should happen – John – 2020-02-07T11:20:41.433
Ok. Let assume hybrid sleep is the reason. Why should this occur only when sleep last long? Let say from night until next day late afternoon. When waked up just after fell-asleep it works always.
I do not want to lost hybrid sleep because it preserves state in case of power loss. Rather I would disable keyboard capability to wake up device. – Ucho – 2020-02-07T21:31:22.860
Try ordinary suspend. Hybrid suspend goes into deeper sleep over the long time. Even so, I can leave my own laptop suspended overnight on regular suspend. – John – 2020-02-07T22:09:20.167
I use desktop. Thus using hybrid. Nonetheless classic sleep is just a workaround not a solution. Still thanks for information. – Ucho – 2020-02-08T00:04:47.233
1If you wish to continue with Hybrid, and this is a desktop, the Power button will bring it out of sleep. Check advanced power options "what do the buttons do" but the power button can be set to do this. – John – 2020-02-08T00:08:23.237
It seems to me that this hybrid sleep has some trouble with keyboard. Is this failure or by design? – Ucho – 2020-02-09T15:07:42.280
I think it is by a design fault. What you describe is not true on my keyboards. If it has suspended, why are the keys being pressed? Is there some interference that I (and others) are not aware of? – John – 2020-02-09T17:36:43.097
No, I just press key to give a signal to computer to wake up. – Ucho – 2020-02-12T21:30:26.203
@ John I wonder if you are familiar with concept of USB controllers. It seems after disabling mouse capability to wake the PC keyboard issues disappeared. I guess it could related to fact that mouse and keyboard share some USB resources. – Ucho – 2020-02-18T19:42:44.550
USB Controllers are built in and are usually not controlled by a single device like a keyboard. They do accommodate a keyboard but can accommodate any reasonable device plugged into a USB port – John – 2020-02-18T19:51:20.963
I expect that some interace wait for signal on certain USB ports from devices known to be wake source.There are USB hubs, root USB hubs. Perhaps there is some bad thing. I will try to learn more about these controllers when I have time. – Ucho – 2020-02-18T21:01:28.097
Windows (or OS) uses the Controller to get signals from from the USB Ports. It is the USB devices that wake up computers if set for it. – John – 2020-02-18T21:10:13.453