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A475 Mouse/Trackpad not working

A285, A475, X395 and later Series
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Bruce Guttman
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A475 Mouse/Trackpad not working

#1 Post by Bruce Guttman » Tue Jun 28, 2022 6:50 pm

I have an A475 (20BK-0018us) with non-functional trackpoint and trackpad.

They used to work, but suddenly stopped.

Running Linux Mint 20. 12 GB memory.
The BIOS says the trackpint is enabled.
It runs fine with a wireless mouse. Keyboard works although trackpoint doesn't.
I've pulled it apart and reseated all the connectors for keyboard and trackpad.

I've tried all the things I can find (mostly "enable within Windows" -- but I'm not running Windows).

Incidentally, I have a similar problem with a Thinkpad T450S running Windows 10 32 Bit (4 GB memory, Also showing enbled in BIOS; also within Windows. Works fine with wireless mouse. I've replaced the trackpad and the system board with the same result.

I have several other machines (T450S, E450, E545) without this problem. All working fine.

Any other things to try? I've downloaded the A475 BIOS to try an update, but I'm not sure that's the answer.
Bruce Guttman

Current stable: 770Z, 600X, T23, R40, R52, T43p, X41, R60, T60, T61, X61, X61T, X201T, T420; T400 (2768-EK9); W510 (4391-CTO), X220T (4296-2W5), T440 (20B6-00AUS), plus an Intellistation M 6219.
New Project: Making X220 work with WWAN.

Bruce Guttman
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Posts: 266
Joined: Wed Apr 21, 2004 11:18 am
Location: New Hampshire, USA

Re: A475 Mouse/Trackpad not working

#2 Post by Bruce Guttman » Wed Aug 24, 2022 8:25 pm

Follow-up I managed to install Windows 10 Pro and the mouse is working. Hope one day to guess the Supervisor password. System seems to be working OK otherwise.
Bruce Guttman

Current stable: 770Z, 600X, T23, R40, R52, T43p, X41, R60, T60, T61, X61, X61T, X201T, T420; T400 (2768-EK9); W510 (4391-CTO), X220T (4296-2W5), T440 (20B6-00AUS), plus an Intellistation M 6219.
New Project: Making X220 work with WWAN.

RealBlackStuff
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Re: A475 Mouse/Trackpad not working

#3 Post by RealBlackStuff » Thu Aug 25, 2022 12:29 am

Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, M900 Tiny (all with W7/SP1)

kapqa
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Location: bolzano, italy

Re: A475 Mouse/Trackpad not working

#4 Post by kapqa » Mon Oct 24, 2022 2:55 am

Hello,

i got a used A275 and the Computer works fine (dualboot Windows 7 + Ubuntu 22.04).
But the FanCurve is a bit noisy, especially in Linux, the APU seems to be putting off much heat.

Wonder how the A475 behaves in this department?

benlimanto
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Re: A475 Mouse/Trackpad not working

#5 Post by benlimanto » Mon Nov 07, 2022 6:51 pm

kapqa wrote:
Mon Oct 24, 2022 2:55 am
Hello,

i got a used A275 and the Computer works fine (dualboot Windows 7 + Ubuntu 22.04).
But the FanCurve is a bit noisy, especially in Linux, the APU seems to be putting off much heat.

Wonder how the A475 behaves in this department?
Have you set/or use TLP or cpu autofreq? It's needed to mimics windows powerconfig drivers..
X220 with Win 10 21H2
i7-2640m, disabled Hyper Thread, Temp Drop on average 10*C
12gb RAM (enough for now, DDR3L)
480 Kingston OEM SSD
64gb Samsung SD Card
Recently rolled back to Windows 7 from Win 10 21H2. Sad

Then FEDORA 36. EL RULESSS :D

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