Touchpad dies after suspend on Mint-xfce 19.1

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venik212
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Touchpad dies after suspend on Mint-xfce 19.1

Post by venik212 » Fri Jul 26, 2019 6:43 am

I am using a Lenovo Yoga 2 Pro with Mint-XFCE 19.1, kernel 5.20. Often (but not always!), when it returns from suspension, the touchpad does not work at all. If I use kernel 4.15.0-55, all works fine. This is the only problem I find with this recent kernel, but it is VERY annoying-- I can only restore normal function by rebooting (logging out isn't enough). When I use Windows 10 on the same machine it returns from suspension with no problem
Any ideas?

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kc1di
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Re: Touchpad dies after suspend on Mint-xfce 19.1

Post by kc1di » Fri Jul 26, 2019 6:57 am

Easy tips : https://easylinuxtipsproject.blogspot.com/
Linux Mint Installation Guide: http://linuxmint-installation-guide.rea ... en/latest/
Registered Linux User #462608

venik212
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Re: Touchpad dies after suspend on Mint-xfce 19.1

Post by venik212 » Tue Aug 20, 2019 2:23 pm

It is an old practice to blame the hardware, but the very same hardware (Yoga 2 Pro) suspends and revives just fine under Windows 10, and used to also do it under linux when I ran Lubuntu (for several years). It was only when I switched to Mint that this started happening, so my finger is pointed that way.. ;-)

venik212
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Re: Touchpad dies after suspend on Mint-xfce 19.1

Post by venik212 » Fri Aug 23, 2019 6:42 am

Again I MIGHT have found the problem. In /etc/modprobe.d there is a file called: blacklist.conf. In it there is a line:
blacklist i2c_i801
When I comment out that line (by putting a # in front of it), now Mint appears to be able to return from suspend without losing the use of the touchpad.
In the past I had already thought that I had found the culprit, but later discovered that the issue returned, so I am now only cautiously optimistic. It appears that black listing i2c_i801 is the wrong thing to do, at least on a Yoga 2 pro running Mint XFCE 19.1.

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kc1di
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Re: Touchpad dies after suspend on Mint-xfce 19.1

Post by kc1di » Fri Aug 23, 2019 7:26 am

Good work Hopefully it will be a lasting fix.
Easy tips : https://easylinuxtipsproject.blogspot.com/
Linux Mint Installation Guide: http://linuxmint-installation-guide.rea ... en/latest/
Registered Linux User #462608

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