Gentoo Archives: gentoo-user

From: Dom Rodriguez <shymega@×××××××××××.uk>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] USB-C PD delivery & Lenovo USB-C hub.
Date: Fri, 27 Sep 2019 17:48:54
Message-Id: 20190927174349.fh7e2wuo6mdmic22@cyberdemon
In Reply to: Re: [gentoo-user] USB-C PD delivery & Lenovo USB-C hub. by Mick
1 On this date - Thu, Sep 26, 2019 at 11:32:03PM +0100, Mick wrote:
2 > On Thu, 26 Sep 2019 at 21:52, Alexey Mishustin <shumkar@×××××××.ru> wrote:
3 > >
4 > > чт, 26 сент. 2019 г. в 23:39, Dom Rodriguez <shymega@×××××××××××.uk>:
5 > > >
6 > > > OK, after much deliberation, I've determined the issue! I'm banging my head on
7 > > > the wall here after realising the cause.
8 > > >
9 > > > I was using an Anker power adaptor, which supplies 60W in *total* to both ports
10 > > > on it - a USB-C port, and a USB-A port. The USB-A port consumes 15W, and the
11 > > > USB-C port is left with 45W.
12 > > >
13 > > > The USB-C hub - for example, the one I've got now consumes 18W from the 45W
14 > > > supplied - which leaves the laptop with 27W. My Thinkpad has a minimum required
15 > > > USB-C PD wattage of 45W - so that's why it wasn't working!
16 > > >
17 > > > Thanks to all who helped with this problem.
18 > >
19 > > Hello Dom,
20 > >
21 > > Thanks to you for the information!
22 > >
23 > > Do not bang your head too much ) This result is a good result, could
24 > > be useful to others.
25 > >
26 > > --
27 > > Best regards,
28 > > Alex
29 > >
30 >
31 > Very interesting finding! Thanks for sharing. :-)
32
33 No worries. As I said to Alex, the new hub and charger arrived today, and
34 they're working with no problems.
35
36 --
37 Sincerely,
38 Dom Rodriguez (shymega).