[Anthony]

rav wrote:

@che0063 How do you know your idle power consumption? How do you know if your CPU enters C2 state or not? How do you know HingeAngeDetection causes an extra 0.2-0.3W power consumption? There is no way to reproduce your results without any info on how you measured them.

I have an huge issue with arrogant people like you who a) dismiss the info which other people give them and b) do so without doing at least some research yourself.

How about YOU use some readily available software that can check CPU C states?

How about YOU then spend hours and hours trying to diagnose what the issue is?

How about YOU then go out of your way to purchase new hardware to attempt to solve the issue?

Go on, do it yourself. C states were measured via ThrottleStop. The HingeAngleService was started and stopped on demand with services.msc. All power usage was measured with minimum brightness, WLAN off, and all background processes terminated. Power usage was logged with batteryinfoview. Once again:

With minimum brightness, wifi and bt off, all background processes stopped, windows 10 1903, no devices connected: 2.0-2.1W. With Hinge Angle Service: 2.5-3W. But don’t worry. YOU shouldn’t need to waste time to try what I MYSELF decided to TAKE MY OWN TIME to SHARE with the community. No, YOU keep on doing what YOU want to do. It’s ALL about YOU. YOU do what YOU think is best for YOU. Don’t even consider what OTHERS might possibly even remotely have to say.

I’m getting 10hrs on my Teclast regularly at school. But you arrogant people aren’t willing to listen to others, let alone even CONSIDER taking ANY trying out what other people take the time to type on these forums.

[Anthony]

I would like to dispute this. My Teclast laptop has and will charge over lower USB C voltages. I have verified this with an 18W USB C adapter that supports 9v at 2A or 5v 2a. The laptop charges, but slowly (about 7W). I’m not sure if it was using the 9v rail or the 5v rail, but definitely not the 12v rail.

I also tried to charge my teclast F6 Pro over one of the USB C ports on my Mi Notebook Pro. It was charging, but once again, slowly. I think it was using the 5v rail because of its charge.

Voltages above 12v ARE NOT NEEDED. the teclast laptop WILL NOT USE any voltage above 12v.

Also, just because a USB C adapter does not support all the PD voltages, DOES NOT MEAN that it is not USB PD spec compliant. By default, if the power adapter supports all voltages, but the host device (the device that you plug into) does not support PD, the power adapter will ONLY output 5v 2a. 5v 2a is the ‘default’ voltage, UNLESS devices negotiate for different power reuirements. For example, a lot of USB C Power banks don’t support the 20v output. Does that mean that it instantly isn’t PD compliant? Of course not.

[Anthony]

Fully idle – Wifi + Bluetooth on, minimum brightness – no devices connected = 2.3-2.5W idle power consumption. That’s over 15hrs of idle time.

 

I can easily get a solid 7-8hrs of web browsing and word processing, with brightness at 50%. If I drop the brightness down to 0%, battery life easily goes up. The included Teclast SSD is faulty for me. I am also not trustful of the Kingspec one – does that allow the CPU to enter lower than C2 state?

As well, the HingeAngeDetection service is poorly optimized. As a result, it keeps the CPU C0% at 5-10% higher than normal. Depending on the BIOS setting, that causes the CPU to consume an extra 0.2-0.3W on idle. That is unacceptable. I have also mucked around with the BIOS and it got CPU power consumption lower.

 

BTW I’m also undervolted -80mV and have near-zero background processes.

As a result, I created a .bat file to stop and start the service when I need it. I don’t even use tablet mode that often.

I am currently trying to find a way to force one of the power states from D0 to D3 so that I don’t need the service to disable the touchpad/keyboard when in tablet mode.

 

@wizzard You can potentially do that if there is space for eMMC.

[Anthony]

A note on the Teclast SSD – Maybe I received a faulty SSD but the Teclast SSD DOES NOT allow the CPU Package to enter anything lower than a C2 state. This results in drastically increased CPU power consumption (0.8W-1W on idle) compared to my Transcend 420S, whuch allows the CPU Package to enter C8 state (0.4W). @Chris I’m not sure if you did your review with your custom SSD, but battery life should easily get to at least 7-8hrs, even 10.

 

The laptop supposedly supports eMMC storage – IIRC there is space for such a chip. If you have a hot air gun youc ould try to add eMMC.

[Anthony]

I have that issue too, although mine won’t charge over 50-60%.

You have a faulty BMS (Battery Management System). It cuts off the charge to the battery for some reason. You have two options:

Return for refund/exchange

Solder a bypass wire from one cell of the lithium ion battery directly to the output pin of the BMS. That’s what I did, but I added a switch so that I could control when it charges and when it stops charging.

[Anthony]

OK, I just found the cause of the issue. The generic Teclast 128GB SATA SSD has a bug where it does not allow the CPU Package to enter a C-State lower than C8. The potential power saving is huge – up to 25% power consumption reduction during idle.

I have ordered a Transcend 128GB SSD, which will hopefully mitigate this issue. I will report in three weeks time, as I have a school tour and will not be able to receive the SSD.

@Chris did you do your battery life testing/review with your 256GB SSD or the one that came with the laptop? I’m able to comfortably get 7-8hrs of use with this bug – with this new SSD I might be able to push 9 or even 10hrs.

The power savings from entering C2 to C8 is huge and cannot be ignored. Porhaps I just got a faulty SSD…

[Anthony]

I believe it is caused by the SIPO TP Controller. Unfortunately, it is required for disabling the touchpad when the laptop enters tablet mode, otherwise it will always stay on. When it starts up, I think it re-configures the touchpad and so it takes a while. For me it lasts, at most, 10 seconds.

[Anthony]

Hello!

 

That is the case with my F6 Pro. It happens usually when power consumption is low i.e. CPU at idle/Package down to C3 or even C8. There is no way of avoiding this issue and most laptops will have it. Sometimes even high end premium expensive laptops have this issue, such as the XPS series.

There is no reason to be concerned; most of the laptops I have worked with have some sort of coil whine, though I agree, the F6 Pro’s whine seems to be excessive.

But uthen again, what did you expect from such a cheap, yet premium feeling device with great battery life? They had to cut corners somewhere.

[Anthony]

Hmm ok. Could anybody share a screenshot of their Throttle C state window? I believe this is the culprit – the 7Y30 cannot go to a Pacackage C state lower than C2. There is a lot of power to saved simply by switching to C7, C8, or even C10. Teclasst has this option unlocked in the BIOS, butu it seems to be a driver than pprevents the CPU package from entering into a deeper sleep state.

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[Anthony]

<p>Hmm, my first posts on this wobsite. THe attachment doesn’t seem to have worked the first time. </p>

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