From: Rafael Waldo Delgado Doblas <lord.rafa@gmail.com>
To: linux-usb@vger.kernel.org
Subject: "GET_CURRENT_CAM command failed"
Date: Wed, 12 May 2021 01:11:23 +0200 [thread overview]
Message-ID: <CAAepdCZcGtCSKTUzkGyAZ2qM5HNRG9cec+9GPPNX-=w03QOfzA@mail.gmail.com> (raw)
Hello,
I am getting the error "GET_CURRENT_CAM command failed" each time that
I start my laptop. After track down a little bit this message I could
find that this has something to do with some ucsi version check:
https://elixir.bootlin.com/linux/v5.11.18/source/drivers/usb/typec/ucsi/ucsi.c#L203
I think that that the message should be out of the conditional "if
(con->ucsi->version > 0x0100) {", so the error is logged when actually
happens. I am supposing that case version > 01.00 it should just
return without update the curr altmode.
Also, I was wondering why only versions under 01.00 are supported to
update their active altmode. The command looks the same in the specs,
why it fails?...
About my set up, I am using two external daisy chained DP monitors
connected to a single USB-C hub without too much problem... just from
time to time when waking up the monitors doesn't turn on and I have to
disconnect and connect the hub but not sure if this is related to
this.
Kind regards,
Rafa
reply other threads:[~2021-05-11 23:12 UTC|newest]
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