Linux issues on T440P w/ T450 touchpad

Discussion in 'Linux Compatibility and Software' started by TheReciever, Aug 27, 2020.

  1. TheReciever

    TheReciever D! For Dragon!

    Reputations:
    836
    Messages:
    3,997
    Likes Received:
    2,416
    Trophy Points:
    231
    Good Morning forum,

    I have been wanting to use Linux for my T440p for quite some time however with it, I cant use the touchpad at all as its sporadic beyond control. It just jumps all over the screen at every touch, opens 3 dozen windows to which I have no idea what they are as new windows open atop. I can just not use the touchpad to navigate some things in the UI but oddly enough Linux is less functional compared to Windows via tab key navigation so that is also limited.

    I can get to the terminal but I have no idea how to replace the driver as I am assuming this is what is needed.

    If I had to guess, the issue is that there are pre-allocated drivers for my model laptop and its range of touchpads, I got rid of that crappy touchpad and installed the 3 button touchpad from this listing here.

    https://www.ebay.com/itm/Thinkpad-T...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

    Windows states its a Synaptics pointing device, I cant say what it is specifically but here is the hardware ID's. Touchpad works fine in Windows 10 after uninstalling default device driver.

    ACPI\VEN_LEN&DEV_0036
    ACPI\LEN0036
    *LEN0036

    I would very much appreciate any insight regarding this, I originally wanted to use Linux but couldnt due to this issue, any version of Linux I have tried does regardless of version. Ubuntu, Kubuntu, Manjaro, Pop_OS, Elementary OS and others I cant remember right now (18 and 20, LTS or not).

    Thank you all very much in advance
     
  2. TheReciever

    TheReciever D! For Dragon!

    Reputations:
    836
    Messages:
    3,997
    Likes Received:
    2,416
    Trophy Points:
    231
    I guess I'll have to get a hard line maybe having internet available from the start can be useful
     
  3. ALLurGroceries

    ALLurGroceries   Super Moderator

    Reputations:
    15,720
    Messages:
    7,144
    Likes Received:
    2,314
    Trophy Points:
    331
    Have you tried using an X11 session versus wayland? Input handling is different between the two. You can try using the synclient command (part of the xserver-xorg-input-synaptics package on Debian) to tweak the hysteresis parameters:
    Code:
    synclient HorizHysteresis=30 VertHysteresis=30
    These values were stolen from: https://rscircus.org/post/72978821261/t440s-clickpad-fix-which-feels-good

    The things to try are different kernel versions, and see if you can find any chatter about your ThinkPad model on linux mailing lists or distro forums/wikis. I don't have time to do an extensive search right now, but those would be your starting places.
     
  4. TheReciever

    TheReciever D! For Dragon!

    Reputations:
    836
    Messages:
    3,997
    Likes Received:
    2,416
    Trophy Points:
    231
    Yeah I have reading around the last week or so and nothing quite sounds like the issues I am having with the touchpad. For most it can be incorrect functions for certain keys and others just nothing at all or loss of function after waking from sleep. Mine seems to go everywhere on the screen seemingly at all times whilst opening a crazy amount of windows that I cant close.

    I can only guess its because I may have an ALPS version versus the Synaptics version that is preferred generally (regardless of the OS)

    Its potentially all solved with a proper driver (regardless of issues)

    This command looks to be a good starting point?

    sudo apt install xserver-xorg-input-synaptics
     
  5. ALLurGroceries

    ALLurGroceries   Super Moderator

    Reputations:
    15,720
    Messages:
    7,144
    Likes Received:
    2,314
    Trophy Points:
    331
    Yeah, I'd give the synclient command a shot, and that command you just posted should install it.
     
  6. TheReciever

    TheReciever D! For Dragon!

    Reputations:
    836
    Messages:
    3,997
    Likes Received:
    2,416
    Trophy Points:
    231
    Will that command install the driver even on a live distro?

    I'd like to see if the touchpad works before installing over Windows, while I have another pc I can use for teams and such (work) I much prefer my t440p over the cheap Dell keyboards and slower platter drives.

    I am ok with experimenting in the OS, but I need a touchpad I guess lol, I dont generally use that machine with a mouse.

    Thanks for dropping by, I could go to reddit and likely get an answer but I like prefer the community here.
     
  7. ALLurGroceries

    ALLurGroceries   Super Moderator

    Reputations:
    15,720
    Messages:
    7,144
    Likes Received:
    2,314
    Trophy Points:
    331
    Yeah it should work as long as the image you are using allows you to install packages.
     
  8. TheReciever

    TheReciever D! For Dragon!

    Reputations:
    836
    Messages:
    3,997
    Likes Received:
    2,416
    Trophy Points:
    231
    Going to give Manjaro a try since a friend of mine is familiar and swears by it. Not commited to any one distro really, just want to have a KDE environment to start with.
     
  9. Tech Junky

    Tech Junky Notebook Consultant

    Reputations:
    30
    Messages:
    113
    Likes Received:
    29
    Trophy Points:
    41
    I've noticed outside of your specific model that certain kernels have minute bugs in them like 5.9RCxx disables the touchpad on my K830 keyboard but 5.8.x works just fine.

    https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D

    Of course whatever is bundled in the ISO should be compatible with 99.999% of the devices out there that have existed for more than a month. When in doubt keep a usb mouse around for this issue if things go awry.
     
  10. TheReciever

    TheReciever D! For Dragon!

    Reputations:
    836
    Messages:
    3,997
    Likes Received:
    2,416
    Trophy Points:
    231
    No, keeping a usb mouse "handy" is not possible in my work environment where I use this laptop for a majority of its active use due to physical security policies. Bringing in my laptop is already an exception to the rule. Which is why I need it working if I do make the switch. If it doesnt work I simply stay on Windows, Im in interested in using Linux but if I spend more time working for Linux than Linux working for me it defeats the point.

    Anyways, I haven't been able to attempt running a live distro yet, working picked up quite a bit and a couple people quit so I havent been able to test anything quite yet, hopefully within the next couple of days though.

    I have no idea what that link is for or how its supposed to be useful, are you suggesting I just keep taking stabs in the dark until it eventually hopefully works? Cause if thats the case that doesnt paint a pretty picture for Linux generally speaking.
     
Loading...

Share This Page