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From: Mario Limonciello <mario_limonciello@dell.com>
To: "Pali Rohár" <pali.rohar@gmail.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	LKML <linux-kernel@vger.kernel.org>,
	"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
	Rob <robr.bensson@gmail.com>
Subject: Re: [SUSPECT SPAM] Re: [PATCH] Add a quirk for the Dell XPS 13 (2015) when in PS/2 mode.
Date: Wed, 25 Feb 2015 12:16:57 -0600	[thread overview]
Message-ID: <54EE1199.3090501@dell.com> (raw)
In-Reply-To: <201502240101.45446@pali>


On 02/23/2015 06:01 PM, Pali Rohár wrote:
> On Tuesday 24 February 2015 00:31:52 Mario Limonciello wrote:
> For older dell models (some old inspirions and maybe also
> latitude) it was possible to use undocumented DELLDIAG interface
> (which enter into SMM mode and call some functions) to enable
> that "RAW" mode.
>
> Now when you are discussing with us, do you have some information
> or can you comment (if it is not secret) that DELLDIAG SMM
> interface?
>
> In linux kernel we have for it driver (provides info about
> temperature, fan speed, power management, hotkeys, ...), but it
> use undocumented interface (and sometimes it has problems):
>
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/char/i8k.c
I don't have any more information I can share on this interface other than I wouldn't recommend to rely on it.  It's generally not supposed to be used by the OS but only for diagnostic purposes from BIOS level diagnostic tools.
> Nothing new. It is that problem with repeating keys which is
> fixed by last version of BIOS.
>
> I saw one E6440 model with preinstalled Ubuntu 12.04.2 and
> distributed with A08 BIOS (which had that problem). And this was
> very very annoying! You could imagine it, you buy new Latitude
> (business class pro notebook), you started it and on preinstalled
> OS, keyboard is not usable. Updating to A10 fixed it.
>

I'm sorry that this had actually made it out the door with a pre-installed machine, but I'm glad we were able to get it fixed in the field.

> In this forum thread people reported that "repeating keys"
> problem for more models: http://en.community.dell.com/support-forums/laptop/f/3518/t/19593360?pi239031352=19
Yes, there is a support agent in that thread relaying those models to the BIOS team.
> And it looks like (from what I'm reading) last version A10 of
> E6440 BIOS broke USB3.0 support.
>



  reply	other threads:[~2015-02-25 18:17 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-19  1:43 [PATCH] Add a quirk for the Dell XPS 13 (2015) when in PS/2 mode Mario Limonciello
2015-02-19 17:16 ` Dmitry Torokhov
2015-02-19 18:16   ` Mario Limonciello
2015-02-20 18:47     ` Dmitry Torokhov
2015-02-20 19:24       ` Pali Rohár
2015-02-20 19:56         ` Mario Limonciello
2015-02-20 20:41           ` Pali Rohár
2015-02-20 21:21             ` Mario Limonciello
2015-02-20 21:31               ` Benjamin Tissoires
2015-02-20 21:40                 ` Mario Limonciello
2015-02-20 21:46                   ` Pali Rohár
2015-02-20 21:54                     ` Mario Limonciello
2015-02-22 16:55               ` Pali Rohár
2015-02-23 23:31                 ` Mario Limonciello
2015-02-24  0:01                   ` Pali Rohár
2015-02-25 18:16                     ` Mario Limonciello [this message]
2015-02-24  0:51                 ` Dmitry Torokhov
2015-02-25 18:26                   ` Mario Limonciello
2015-02-25 18:48             ` Mario Limonciello
2015-02-25 20:45               ` Pali Rohár
2015-03-14 19:17                 ` Benjamin Tissoires
2015-03-16 14:29                   ` Mario Limonciello
2015-03-16 14:40                     ` Benjamin Tissoires
2015-03-16 17:10                     ` Jason Ekstrand
2015-03-16 18:50                       ` Mario Limonciello
2015-03-16 20:42                         ` Jason Ekstrand
2015-03-16 20:50                           ` Mario Limonciello
2015-03-16 20:57                             ` Jason Ekstrand
2015-03-16 21:07                               ` Benjamin Tissoires
2015-03-17  0:45                                 ` Mario Limonciello
2015-04-10 22:39                 ` Pali Rohár
2015-04-10 23:07                   ` Mario Limonciello
2015-04-10 23:14                     ` Pali Rohár
2015-04-10 23:32                       ` Mario Limonciello
2015-04-11  2:19                         ` Ben Gamari
2015-04-13 18:55                           ` Mario Limonciello
2015-03-21 17:21           ` Ben Gamari

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