From: Pavel Machek <pavel@ucw.cz>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Michael Welling <mwelling@ieee.org>,
kernel list <linux-kernel@vger.kernel.org>,
linux-input@vger.kernel.org, pali.rohar@gmail.com,
sre@kernel.org, aaro.koskinen@iki.fi,
ivo.g.dimitrov.75@gmail.com, patrikbachan@gmail.com,
serge@hallyn.com, Peter Hutterer <peter.hutterer@who-t.net>
Subject: Re: v4.1 to v4.7: regression in tsc2005 driver
Date: Wed, 20 Jul 2016 22:22:01 +0200 [thread overview]
Message-ID: <20160720202201.GA2290@amd> (raw)
In-Reply-To: <20160720162356.GA25655@dtor-ws>
Hi!
> > > > > > > > > drivers/input/touchscreen/tsc2005.c: input_dev->name = "TSC2005
> > > > > > > > > touchscreen";
> > > > > > > > >
> > > > > > > > > to "TSC200X touchscreen". Unfortunately, X seems to propagate that
> > > > > > > > > name to userspace, where it is needed to be able to do
> > >
> > > Technically X _is_ userspace.
> >
> > There's "userspace running as root" and "userspace userspace" :-).
>
> I do not really see any difference form the kernel POW.
>
> >
> > > > > > > > >
> > > > > > > > > xinput --set-prop --type=int ...
> > > > > > > > >
> > > > > > > > > with the right arguments to calibrate touchscreen. (Touchscreen is
> > > > > > > > > unusable without calibration).
> > > > > > > > >
> > > > > > > > > What to do with that?
> > >
> > > Hmm, I do not think we ever committed for the device names to be stable.
> > > You are supposed to locate touchscreen device based on its properties
> > > and you might need some heuristic if you encounter a system with more
> > > than one such touchscreen.
> >
> > Well, you are commited now, like it or not, X people did it for you
> > :-(.
> >
> > Because there's no other reasonable way to use xinput --set-prop...
>
> Well, X is going to have to fix it. How am I supposed to control my
> devices in multi-seat environment if I use the same hardware (or if I
> have device with multiple touchscreens)? They all will have the same
> name (well, all mice, then all keyboards, etc). Let's add Peter to the
> fold...
Well, if someone has such a multiseat config, they have a problem. But
in the meantime, I'd like to keep working system.
http://who-t.blogspot.cz/2016/07/xinput-resolves-device-names-and.html
And I see you replied in the blog. Good. Yes, X needs to be improved
to work nicely with multiseat. Still kernel needs to play nice and not
have regressions.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2016-07-20 20:22 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-17 17:52 v4.1 to v4.7: regression in tsc2005 driver Pavel Machek
2016-07-17 18:24 ` Michael Welling
2016-07-17 18:42 ` Pavel Machek
2016-07-17 18:51 ` Michael Welling
2016-07-17 20:03 ` Pavel Machek
2016-07-17 22:56 ` Michael Welling
2016-07-19 23:51 ` Dmitry Torokhov
2016-07-20 0:39 ` Michael Welling
2016-07-20 0:53 ` Dmitry Torokhov
2016-07-20 1:34 ` Michael Welling
2016-07-20 1:44 ` Dmitry Torokhov
2016-07-20 2:09 ` Michael Welling
2016-07-20 3:49 ` [PATCH] Input: tsc200x - Report proper input_dev name Michael Welling
2016-07-20 6:31 ` Pavel Machek
2016-07-20 6:50 ` Michael Welling
2016-07-20 6:54 ` Pavel Machek
2016-07-20 7:06 ` Michael Welling
2016-07-20 7:48 ` Pavel Machek
2016-07-20 16:45 ` Dmitry Torokhov
2016-07-20 16:56 ` Pali Rohár
2016-07-20 17:04 ` Dmitry Torokhov
2016-07-20 17:14 ` Dmitry Torokhov
2016-07-20 20:25 ` Pavel Machek
2016-07-20 20:37 ` Pali Rohár
2016-07-20 16:33 ` v4.1 to v4.7: regression in tsc2005 driver Pali Rohár
2016-07-20 1:26 ` Aaro Koskinen
2016-07-20 2:18 ` Michael Welling
2016-07-20 6:25 ` Pavel Machek
2016-07-20 16:23 ` Dmitry Torokhov
2016-07-20 20:22 ` Pavel Machek [this message]
2016-07-20 21:47 ` Peter Hutterer
2016-07-20 22:20 ` Dmitry Torokhov
2016-07-20 22:55 ` Peter Hutterer
2016-07-21 6:32 ` Pavel Machek
2016-07-21 6:42 ` Peter Hutterer
2016-07-21 8:54 ` Pavel Machek
2016-07-21 9:04 ` Pali Rohár
2016-07-21 9:04 ` Pali Rohár
2016-07-22 0:12 ` Peter Hutterer
2016-07-25 14:59 ` Pali Rohár
2016-07-25 14:59 ` Pali Rohár
2016-07-31 21:28 ` Peter Hutterer
2016-07-22 0:10 ` Peter Hutterer
2016-07-22 0:57 ` Dmitry Torokhov
2016-07-25 14:56 ` Pali Rohár
2016-07-25 14:56 ` Pali Rohár
2016-07-28 19:33 ` Pavel Machek
2016-07-28 19:33 ` Pavel Machek
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160720202201.GA2290@amd \
--to=pavel@ucw.cz \
--cc=aaro.koskinen@iki.fi \
--cc=dmitry.torokhov@gmail.com \
--cc=ivo.g.dimitrov.75@gmail.com \
--cc=linux-input@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mwelling@ieee.org \
--cc=pali.rohar@gmail.com \
--cc=patrikbachan@gmail.com \
--cc=peter.hutterer@who-t.net \
--cc=serge@hallyn.com \
--cc=sre@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.