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12-23-2019

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Re: Thinkpad E495 - Lagging and unresponsive keyboard

2019-12-23, 16:15 PM
To clarify after I updated the 1.11 BIOS
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7 Posts

07-17-2019

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Re: Thinkpad E495 - Lagging and unresponsive keyboard

2019-12-31, 3:09 AM

Thanks for the update.  I was going to pull the trigger on an E495 until I saw the keyboard issue had STILL not been resolved.  Looks like another Lenovo failure.

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49 Posts

08-26-2019

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Re: Thinkpad E495 - Lagging and unresponsive keyboard

2020-01-05, 21:14 PM

Hi Davey,

 

I am currently on the lateast 1.11 bios release and still have the "rtuyrtuyrtuy" issue (the U shows up when pressing only r t y).

 

I know you mentioned this will be fixed in a new bios update "end of december".. just wanted to confirm you didnt mean the 1.11 one?

 

Please update us. Thank you!

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176 Posts

07-30-2019

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Re: Thinkpad E495 - Lagging and unresponsive keyboard

2020-01-06, 8:40 AM
Hi I am sorry to tell you the BIOS is delayed. "rtuyrtuyrtuy" issue will be fixed in next version, it is undering internal testing now. It will be released on lenovo support within next week. Thanks for your understanding.
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49 Posts

08-26-2019

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Re: Thinkpad E495 - Lagging and unresponsive keyboard

2020-01-19, 16:33 PM

Any update?

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07-30-2019

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Re: Thinkpad E495 - Lagging and unresponsive keyboard

2020-01-20, 8:18 AM

Hi  

BIOS V1.12 is posted on lenovo support today.  fixed"rtuyrtuyrtuy" issue.

 

https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-edge-laptops/thinkpad-e495-type-20ne/downloads/DS539418

 

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01-21-2020

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  • Message 57 of 65

Re: Thinkpad E495 - Lagging and unresponsive keyboard

2020-01-21, 21:59 PM

Just installed the latest BIOS 1.12 on my e595 (same motherboard, same bios) via Lenovo Vantage.

 

Now typing rtyrtyrtyrtyrytrytrtyrytrytrytrtyrytrty sometimes produces still ryt, but mostly.

However, most annoying is that when you type it really fast you get the system beep.

 

Some keys are sitll (still) transposed when tpying (typing) really fast, hwich (which) used to be possible on Lenovo thinkpad keyboards and are one main point in me getting a thinkpad in the first place.

 

typing hjk very fast produces hjk correctly but also gives you a system beep

 

typing "very" fast can produce "veyr"

 

There likely are many moer (more) examples of transposing of keystrokes.

It seems teher (there) is a lot to be done regarding the keyboard scanning code.

In fact the latest update has almost made things worse for me and it seems very unsure to type on the thinkpad keyboard now,

 

Also typing fast now sometimes gives you the beep after certain otehr (other) combination as well. I suggest this issue be deeply investigated and remedied.

 

Also the latest BIOS update includes the BIOS option of adding a setting the framebuffer size (which used to be locked to 2GB) but after installing the latest bios this setting without any warning or remark of it in the BIOS readme automatically defaults this new bios setting of frambuffer size to 128MB (thank goodness I checked) this can cause an issue for people playing certain games and applications since it disables the playready support (which requires the framebuffer to be set at 1GB or 2GB). Playready is an microsoft DRM technology, which is used among other things in Netflix. So many people will be very unpleased to find out they can no longer output Netflix at 4k (since playready will not work once the framebuffer is not at 1GB or 2GB (it says so in the BIOS setting that using value other than 1GB or 2GB you will not be able to use Playready)

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08-26-2019

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Re: Thinkpad E495 - Lagging and unresponsive keyboard

2020-01-26, 6:54 AM

Thank you!

 

Any response about the post above me?

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01-21-2020

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  • Message 59 of 65

Re: Thinkpad E495 - Lagging and unresponsive keyboard

2020-01-31, 8:24 AM

Any replies from Lenovo representatives ?

 

This is a serious issue which warrants and deserves attention and a High Priority Service Request to deal with this problem.

The current state of the keyboard firmware makes typing fast practically impossible, atleast infeasible on Thinkpad E495 and E595.

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01-21-2020

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  • Message 60 of 65

Re: Thinkpad E495 - Lagging and unresponsive keyboard

2020-01-31, 21:30 PM

Hi All.

 

I have now raised a Service Request at Lenovo/IBM ticketing system regarding the keyboard issue on Thinkpad E595 and E495 specifically, since they share the same Mainboard.

 

And since they also share the Same Bios and hence the same Keyboard Firmware, which, according to what I gather from the information on this thread, as well as the information from links posted in this thread, is due to low frequency polling of the keypresses on the laptops internal keyboard, possibly due to bad firmware/code, which will sometimes transpose letters written on the keyboard.

 

The issue, to put it shortly, is that the keyboard firmware scanning code is reading the keyboard at too low interals.
Therefore if you type very fast the two keystrokes which are pressed 20-50milliseconds apart cannot be scanned separately by the firmware due to this bug.

 

So the keypresses are scanned as happening at the sametime and then no way of the firmware to know which key was pressed earlier so by default the keyboard firmware will almost always (atleast 99% of time) output the key first which is located on the rightmost side on the keyboard when comparing the location of the pressed keys.

 

Even if you press the leftmost key of the two just a couple of dozen of microseconds (or so) earlier, the left key will still lose to the key pressed to the right of it even though it was pressed down first.  Just try it on the latest Bios (which I have installed which was supposed to fix the rtyrtu issue) posted by Lenovo staff.

 

This too low keyboard scanning time results in on of the best components of a Thinkpad laptop to be crippled: Its wonderful keyboard, not the physical limitation of the keyboard itself, I think and hope. 

 

 

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