12-05-2014 07:51 PM
Both me and a friend of mine have Lenovo W540s. Everything was working perfectly fine with all of our hardware, until today. A BIOS update came out and installed correctly on both of our machines. After this update both of our UltraNAV features on the trackpad are all dead. After that first restart a message appeared "finding new hardware" and it found a generic mouse on the laptop. Now when I try to re-install the UltraNav drivers, it says no hardware found. I tried both the drivers on Lenovo.com and the manufacture's website all with no luck.
Does anyone have any ideas on how to fix our UltraNav pads? Thank you!
Solved! Go to Solution.
11-23-2014 02:26 PM - edited 11-23-2014 02:34 PM
Hi, for some reason Touchpad and Trackpad stop working suddenly.
It looks like this:
1. First all works fine.
2. Then only mouse movement works. Taps and clicks do not work.
3. Later on move movement stops working too.
Reboot does not help. Removing battery does not help.
If I disable Trackpad and Tachpad in BIOS.
Then Save BIOS Settings
Reboot into BIOS again.
Enable Trackpad and Tachpad in BIOS back.
Boot to Windows. Touchpad works ok.
This laptop is new - in period when different defects not detected at the factory - start to appear, so I am not really surprised. But couple weeks ago I updated BIOS via Lenovo System Update. And I kind of remember the problem did not manifest before BIOS update. Today I've updated BIOS from file without checking aht version I was running. Now it's 2.16 and problem is there.
I personally think it is just faulty hardware and BIOS update was just a coinsidence.
Now more details.
Both Windows 8.1 and Linux are affected.
Just reinstalled W8.1 with update.
'PS/2 Mouse driver' is present in Device Manager and Windows does not show any problems.
(Same if UltraNav driver is installed).
Problem is still there if I remove Microsoft wireless mouse receiver from USB.
All Windows Update updates.
Nearly all Lenovo updates, even tried to install FIngerPrint software.
Is it a known issue? Is the only way is to go to Lenovo service for physical repair?
Maybe I just need to revert to some older BIOS version???
11-27-2014 10:48 AM
If you go back to older version there is a restriction in the release notes of 2.16:
NOTES - If the UEFI BIOS has been updated to version 2.15 or higher, it is no longer able to roll back to the version before 2.15 for security improvement.
12-04-2014 01:22 AM
I updated to BIOS 2.16 yesterday, no problems.
So waiting for the next BIOS maybe will not help you, it looks like an other reason, maybe hardware?
12-05-2014 09:30 PM
Dunno, I do not use the trackpad, but it is active for minor surfing. After the update to v2.16 (on W540), mousing the mouse cursor and tapping to enter still worked. However, I never tested the other functions, as I gave up on this elite mouse pad.
So, just to let you know, the simple functions are still there after the BIOS update.
12-06-2014 04:28 AM
The problem is not new, maybe you want to have a look here:
12-06-2014 08:15 AM
I will deffiently give this a try. I did try to look around first before I posted, apparently I did not look hard enough.
12-06-2014 08:42 AM
I rarely use the tracktap myself, just now the palms of my hand hit it as I am typing and it messes everything up. lol