On Tue, 23 Jan 2018 17:43:27 +0000
Mike Lothian <[email protected]> wrote:

> Hi
> 
> I've applied all BIOS updates for my laptop including the pulled one
> for Spectre/Meltdown & ME bugs the other week
> http://www.dell.com/support/home/uk/en/ukdhs1/product-support/servicetag/8k5w662/drivers
> 
> If it helps, I don't have this issue in Windows but I rarely have it booted
> 
> I thought it might have something to do with an ACPI failure (see bug
> https://bugzilla.kernel.org/show_bug.cgi?id=198051)
> 
> Regards
> 
> Mike
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Hi Mike,

You did not specify what provides the USB-C port.

I suppose that your USB-C port is actually a Thunderbolt 3 port from an Intel 
controller.

What you describe is a well known bug that affects all Thunderbolt 3 ports and 
this bug has always existed in Linux, including until now.


I also have a Dell laptop, some Intel NUCs and some ATX motherboards with 
Thunderbolt 3 ports, all of which have this bug.

On the other hand, all the USB C ports that I have seen, which are connected to 
other USB controllers, e.g. from ASMedia, those work normally, they do not have 
this bug.

Best regards !









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