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Thunderbolt 3 Support in Linux for Legion Y720

2018-07-27, 10:58 AM

Is there a workaround to enable Thundelbolt 3/USB-C support in Linux for Y720 devices?


I'm getting the "No Thunderbolt Support" in Gnome under Fedora 28 and Ubuntu 18.04 similar to this:

Image result for fedora thunderbolt


On the Y720 BIOS, there is no option regarding Thunderbolt configuration or security.


I havent tried plugging in an actual device Thunderbolt device though. 


I'm also not able to read from a USB-C flash drive.



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Re: Thunderbolt 3 Support in Linux for Legion Y720

2019-03-15, 1:09 AM

The interface not showing is not necessarily an issue, the thunderbolt chip basically powers down when not connected to anything.


However, I share the ssame of issue of it not working properly with USB devices.

A usb flash drive will work if it's inserted at boot - presumably the BIOS sets it up correctly.

An attempt to plug a device after boot however results in nothing.


Haven't had a chance to try an actual thunderbolt device fully yet, but will hopefully soon.

I suspect it won't work either, as the force_power wmi flag supposed to make it turn on does not work either.


It works fine for me in Windows, so there's some specific incompatibility in Linux with the Y720.



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Re: Thunderbolt 3 Support in Linux for Legion Y720

2019-06-28, 10:13 AM

I had a similar problem with wifi and bluetooth on Mint: https://forums.lenovo.com/t5/Gaming-Laptops/Running-Linux-Mint-19-1-on-Y720-wifi-and-bluetooth-not-working/m-p/4402985


in resume, I fixed it by going to the archive: /etc/modprobe.d/blacklist.conf and adding this line at the end: /etc/modprobe.d/blacklist.conf

I'm not sure if it will work for thunderbolt, but I gues if there's a way to fix it, it must be some of the same kind



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