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Hi12 Standby problem

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okigo|Post time:8-24-2017 00:53:49 View:4881|Reply:37

ac0935p| Post time 8-21-2017 22:31:42 | Show all posts
Edited by ac0935p at 8-21-2017 22:51

Blocking the device driver update with the update Troubleshooter works a treat.  When I ran the troubleshooter, Windows said an update to the Intel HD Display driver was queued.  I blocked it.  After 24 hours, the update still has not been applied.  "Device Installation Settings -> Automatically download..." is set to YES.  I am using all the default settings on my Chuwi Hi12 with the only exception being the update to the Intel HD Display driver that is blocked.

I have now run for 60 hours with Intel HD Display driver version 20.19.15.4331 - in the 60 hours I have had only one occurrence of not being able to wake from sleep.  It's not perfect, but its much, much, much better than it used to be.



My hypothesis is that your Hi12 comes with 20.19.15.4331 installed.  Windows update "immediately" updates this to 20.19.15.4549 - it is this update that seems to start causing the problems on wakeup.  By uninstalling the later driver (effectively deleting it from your machine), you can force the re-installation of 20.19.15.4331. Then stopping updates using the troubleshooter prevents the problem from being recreated.

If anyone else tries this experiment, let me know how you get on.  I hope you have the same success that I have.

I am becoming really happy with my Chuwi Hi12.  Windows has finally become useable and now I have Android (stock), rooted with TWRP and with xPosed all working.  I am using Active Launcher so my tablet looks like it's running Android N (but not really).  TWRP is a bit tempramental - I seem to have to reflash the recovery partition sometimes, but I backup my tablet once a month, so it's not a major pain.  The only thing I haven't got working so far is Android Assistant...


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Motobot| Post time 8-22-2017 04:28:35 | Show all posts
ac0935p replied at 8-22-2017 09:17
Sorry if I was not clear - I have updated my original post to clarify the end result.  With my meth ...

The sleep mode issue is very serious and painful for all Hi12 owners on the z8350. Therefore, any experience is important and especially one that has been crowned with success.
Thank you again for your updated post and excuse me for misunderstanding.
Please give us a little more information about your device.
1. The serial number of your tablet;
2. Version of BIOS.
To try your experiment, we may need your additional help with a copy of all the current drivers of your tablet in Windows. I hope you could share these drivers with us.
1. Create a folder named Drivers in the root directory of drive C
2. Run PowerShell with Administrator rights (as Admin) and perform the following command
  1. Export-WindowsDriver –Online -Destination C:\Drivers
Copy the Code


3. Pack drivers in the ZIP file and share with us.

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ac0935p| Post time 8-22-2017 23:59:36 | Show all posts
My monitoring continues.  Yesterday i had 2 barfs on the machine - so that's 3 in about 80 hours.  That includes switching between Android and Windows so it's not bad.  Actually it's about the same rate that I had on my old Hi12 (Z8300 period).  There seems to be a particular sensitivity around the screen going off (after it's timeout period) and immediately using the powerswitch to try and power it back on.  That seems to pretty much guarantee a barf.  That's a mite inconvenient because if I am talking someone through a document and the screen goes off...  But hey, that's my problem.  I also use the official chuwi flipcase with the magnet to turn it on and off.  It always seems to wake if I have shut the cover and re-open it (but not if it's already barfed, of course).

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ac0935p| Post time 8-23-2017 00:03:26 | Show all posts
Motobot replied at 8-22-2017 04:28
The sleep mode issue is very serious and painful for all Hi12 owners on the z8350. Therefore, any  ...

The serial number is Q64G45170402318
Bios version is 2.17.1249 build date is 13th March 2017 14:20:21
CPU Microcode patch 40a
Intl GOP Driver 8.0.1038
Will upload driver package later today as I continue to monitor.
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theloneranger| Post time 8-23-2017 15:02:34 | Show all posts
ac0935p replied at 8-21-2017 22:17
Sorry if I was not clear - I have updated my original post to clarify the end result.  With my meth ...

Hi,

I tried this approach and it didn't work. Even with 20.19.15.4331 intel driver, the tablet behaviour is erratic. I am currently running with 20.19.15.4331 and it hasn't helped.

One thing that I have noticed is that whenever the tablet correctly woke up from sleep, no apps were running on my desktop. If any apps are running, the behaviour is highly erratic. I will test further if the tablet wakes up from sleep when no apps are running.
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theloneranger| Post time 8-23-2017 15:22:21 | Show all posts
ac0935p replied at 8-23-2017 00:03
The serial number is Q64G45170402318
Bios version is 2.17.1249 build date is 13th March 2017 14:20: ...

Hi,

Thanks for sharing your experience.

I have blocked the updates as well so my tablet is still running 4331 but showing only marginal improvement . Will continue to monitor my tablet and hopefully see some more improvement. Will post an update accordingly.
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ac0935p| Post time 8-23-2017 23:23:37 | Show all posts
Monitoring continues.  No barfs at all yesterday.  Avoided using the power-switch after screen off.  Flip cover turns screen off and on as expected.  Will pack up drivers during today and share them.
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ac0935p| Post time 8-24-2017 00:53:49 | Show all posts
Add one to the barf count.  After uploading the drivers package to google drive, the screen went off and it barfed.  I am going to let the screen go off again, but leave it alone for 30 minutes and see if it re-awakens after a longer pause.

Anyway, here is a link to the installed driver set.
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