From: Oliver Neukum <oneukum@suse.com>
To: Richard Dodd <richard.o.dodd@gmail.com>, linux-usb@vger.kernel.org
Subject: Re: Usb midi device does not work on wake
Date: Mon, 13 Jan 2020 10:23:41 +0100 [thread overview]
Message-ID: <1578907421.2590.2.camel@suse.com> (raw)
In-Reply-To: <CAAWug1d8wv3Thu0b==j6fLajU965unYKs552j+s9t13MOytmng@mail.gmail.com>
Am Sonntag, den 12.01.2020, 12:06 +0000 schrieb Richard Dodd:
> Hello
>
> I've got a Novation midi-over-usb device (LaunchControl XL) that works
> correctly on boot, but remains in power-off mode when waking from
> sleep.
>
> I suspect that there is some sort of initialisation that needs to be
> applied. Could anyone suggest possible causes, or point me in the
> direction of the relevant source code. I found `sound/usb/quirks.c`,
> which seems to be the place to handle this kind of thing, but there is
> no mention of my device anywhere in the source tree at present
> (1235:0061).
Hi,
some devices need an additional reset. They have the quirk RESET_RESUME
in that file. Try adding your device to that list and recompile your
kernel.
HTH
Oliver
next prev parent reply other threads:[~2020-01-13 9:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-12 12:06 Usb midi device does not work on wake Richard Dodd
2020-01-13 9:23 ` Oliver Neukum [this message]
2020-01-29 15:47 ` Richard Dodd
2020-01-30 6:34 ` Greg KH
2020-01-30 16:58 ` Richard Dodd
2020-01-30 17:33 ` Greg KH
[not found] ` <CAAWug1d7u1bGhkyYRbEk1g4a3oMPgxCrppeTPtjLT-uuHhf83g@mail.gmail.com>
2020-01-31 21:40 ` Greg KH
2020-02-12 14:22 ` [PATCH] USB: Fix novation SourceControl XL after suspend richard.o.dodd
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