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I have not used booting from the eMMC anymore since an SSD has been fitted. But don’t worry; when you would boot from the eMMC the deleted index files will be automatically re-created by Windows Search.

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…  it’s kind of ok as the microsd card slot is apparently USB 3 type meaning I could have decent transfer speeds of 30 to 110 mb/sec depending on the SD card I’d install.

And now to the negatives of Rev 3: No m.2!

I tested the reader with a SanDisk extreme UHS 1, U1 with declared speeds of “Up to 80MB/s read speed and up to 50MB/s write speed”. My results? 25mb/s read and 25mb/sec write…

The first revision has an M.2 slot and was generally ok., albeit for more than office use it needs the thermal mod.

The second revision has an M.2 slot and a clip to hold it, which could be fitted since they made the metal bar inside shorter. It also comes with a glaring bug; the battery won’t last longer that say 3 hours, the first revision could do 5-6 hours. This is caused by some BIOS/Windows power management bug.

The third revision has a totally different motherboard without the M.2 slot. But hopefully not the power management bug.

All versions have a Realtek USB 2.0 to MicroSD card chipset. So no speeds higher than say 20-30 Mb/s are to be expected. The LapBook has a USB 3.0 slot; you better buy some sort of external SSD drive or a USB 3.0 MicroSD reader (comes with UHS-II Lexar cards).

It is a mess this LapBook with all its revisions, BIOS versions, matte screens, glare screens, bad keyboards, thermal problems etc. etc.

It looks nice but basically it is useless for serious work. I bought a couple for my company and regret that.

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This is the first revision LapBook 14.1 (you are lucky with that, has an M.2 SSD slot an no powermanagement issue).

What are you doing when it suspends? Could it be overheating? Perhaps you need the thermal mod described in the TechTablets pages.

Also have a look at the Windows logs with Event Viewer, perhaps there is some clue as to why the system suspends.

Far off suggestion; but could it be that you by accident hit the power-off key instead of Delete or any other key in that corner of the keyboard?

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The software that comes with the programmer has a function to save the chip’s content to a file. You should have used that function so that you would have a backup.

Two chips and a 50/50 chance you pick the wrong one to flash… without a backup. Gee.

Perhaps Thomas can make a backup of the chip you erased. It probably contains some configuration data.

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With the phrase “Expansion” the advertiser means that a MicroSD card can be fitted upto 120Gb.

There has not been a single advertisement for the LapBook 14.1 that mentions the internal M.2 SSD slot.

So it is not misleading from Chuwi to now take away the slot.

But three different revisions of this notebook is a bit too much. I used the smaller metal bar and the SSD clip of the second revision on a good sample of the first revision. My only LapBook of the second revision has a nasty brighter spot on the screen and the power management problem. Will spend its life in the cupboard or bin.

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No news yet, but (2) more people have reported the problem, see a.o.:

http://forum.chuwi.com/thread-4568-1-1.html

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Try to to a benchmark with CrystalDiskMark or AS-SSD instead.

Those tools are more widely known.

Your figures are very low.

ZTC only has data of the 64G model on their website. On eBay and Amazon sellers advertise the 128G model to have read speed up to 550MB/sec – write speed up to 490MB/sec.

So better speed than your figures could be expected.

I tried Adata and MyDigitalSSD SuperBoot, both do around 300 MB/Sec write and around 400 MB/sec read. The SuperBoot is the fastest of the two but in real life not noticeable.

The ZTC gets good reviews on Amazon… and the reviews that show screendumps of CrystalDiskMark show good performance.

So, try CrystalDiskMark (free) and compare your results with those within the reviews on Amazon.

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Yep, in contrast with my first post in this thread, it is not the CPU cores’ power management that is at fault here but some combination between the Intel HD Graphics driver and the GPU power management parameters set by the BIOS. It is weird since even with the Microsoft Basic Display Adapter doing nothing, the graphics cores use 2 Watt. Better than the almost 6 Watt owhen using the Intel HD Graphics driver but it should be almost 0 Watt when idling.

Whether Chuwi or Hampoo, the OEM of the PCB, will deliver a new BIOS solving this, I don’t know. For some reason there are various BIOS files floating around, even in the official Chuwi forum. For the previous revision we had 011, 012 and 017.

Even for the latest revision we already had 024 and 026 so there is some process to spit out new BIOSes…

We will have to see. In its current form the latest revision is worthless to me with such a bad battery life, meaning it won’t last during my workday.

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First of all I noticed with BatteryMon that the latest revision LapBook consumes a lot more power than the previous version. Then the question where all this power goes is interesting.

I used HWINFO (freeware tool) to show the data of all the sensors in an Intel CPU. These show that even when doing almost nothing (i.e. idle) the CPU consumes around 6 Watt which is the maximum for this type of CPU. First I thought it was the CPU cores but it turns out it is the GPU engine that consumes two-thirds of that power. This causes the package to run hot which means the CPU throttles, that is why it will never go higher than 1.500 Mhz.

In the post I pointed to the same problem was discussed to be present in BIOS versions before 012 and it was solved by 012 and 017 (which also added Linux booting). I believe all LapBooks until December 2016 came with BIOS 011.

So apparantly for this new revision of the LapBook (which come with BIOS version 026) the same error has been re-introduced. Hopefully it will be fixed.

I found a copy of the AMI BIOS tools and I can dissect these BIOS’s but there are a lot of other differences so hard to pinpoint what causes this without source code of the BIOS.

I posted the question to update the BIOS on the official Chuwi forum, but Chuwi doesn’t appear to deliver a lot of technical support so I don’t know whether this will be solved.

See:

http://forum.chuwi.com/thread-4547-1-1.html

 

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Yep. That is it. Same problem. With the Microsoft Basic Display Driver the system runs easily at 2.100 to 2.200 Mhz.

Geekbench: uni/multi : 1457 / 4236 instead of previous 1041/2787.

Tried updating the Intel Graphics drivers. Didn’t help.

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In the meantime I noticed (by a closer look into HWINF)O that it is/are the Intel Graphics core(s) that consume all this power…

This is very much related to:

Weird power characteristics of the n3450?

If the Intel Graphics Driver is exchanged for the Microsoft Basic Display Adapter the power consumption of the CPU drops from 5 Watt to 2 Watt.

In the post above a BIOS update solved the problem… but there are no newer BIOS’s for this latest revision.

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I regard the fact that this BIOS does not allow the CPU to go into its deep sleep mode a bug. It might be a conscious decision of Chuwi (or Hampoo, the OEM of the main PCB) but since this decision means the loss of more than 2 hours of battery life, turning approx. 10 Watt of the battery power into heat, I find it a rather stupid decision.

This LapBook now has worse battery life than my HP nc6000 of 2003.

BTW; forgot to mention that there is another difference between this revision of the LapBook 14.1 and the previous version; the touchpad mentions V2 on its PCB. So it might be better than the previous version.

Perhaps TouchFreeze (use google)  helps with any touchpad problems during typing.

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Don’t flash a version of the BIOS for the older release of the LapBook 14.1 to the latest hardware!

You will brick your LapBook.

See:

Warning for newer model Chuwi 14.1 bios update will kill it.

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@Justinkeyback,

Same here with the latest (newer revision) of my LapBook 14.1″: a lighter area bottom right. It also disappears when pressing between the back of the panel and the bezel just below the lighter area. But after a while it returns.

I told you so that the 14.1 is much better than the 15.6…

Later today my results with pictures of the differences between the first and last revision of the LapBook 14.1″.

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Tomorrow I will put the old and new version next to another and open them up again to have a closer look to all the changes, especially to the battery.

Stay tuned.

[Author]

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