Synaptics SMBus TouchPad driver update?

  1. Posts : 449
    win 10

    Synaptics SMBus TouchPad driver update?

    I have just upgraded an HP 15-af156sa laptop to 1909 18363.815
    However, the touchpad is laggy in that about every 2 secs the mouse response stops for a split second then off it goes again and so on
    The current driver is but a support thread it should be or later
    I've tried to install but it fails with 'not compatible with this OS'?
    I now believe it might be (sp100845) but can't find this driver anywhere!
    I've even rolled back to as per the current driver listed on the HP support website for this model but it made no difference
    Is it in fact the driver at all and if not then what is the fix?
    What driver should I be using and where can I get it?
    Anyone else had this issue and if so then what was the fix?
    It's even worse than I thought!
    The issue is there even for a corded or wireless mouse!!
    Even if I disable the touchpad I still get the issue with a corded mouse so not sure now if it's even related to the touchpad
    Last edited by robgr; 10 May 2020 at 06:58.
      My Computer

  2. Posts : 434
    Windows 10 Pro 64bit

    Try these drivers: Synaptics TouchPad Controller
      My Computer

  3. Posts : 449
    win 10
    Thread Starter

    Thank you Grom0X
    I installed this driver version but oddly the driver hasn't changed in device manager nor did it work :-(

    - - - Updated - - -

    Just discovered it's ok if I boot in safe mode
    What's the best way forward?
      My Computer

  4. Posts : 434
    Windows 10 Pro 64bit

    Please try these newest drivers from HP: Touchpad Synaptics
      My Computer

  5. Posts : 449
    win 10
    Thread Starter

    The issue still remains
    I now realise that the whole laptop freezes every 2 secs
    I can't see anything significant in task manager in that the cpu & mem appear normal
    However, when I look at the performance I can see a regular cpu spike where it goes from 2% to 20% repeatedly (looks like a saw teeth!)
    Any idea how I can zero on what process, driver etc. is causing this?
      My Computer

  6. Posts : 434
    Windows 10 Pro 64bit

    Go into Safe mode and uninstall drivers, or use System restore.
      My Computer

  7. Posts : 449
    win 10
    Thread Starter

    Marked as solved as issue turned out to be display driver (updated to AMD 15.201.1101.0)
      My Computer


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