Messages in this thread | | | From | "Gabriel M. Elder" <> | Subject | RE: keyboard backlight max brightness bug on Dell Lat itude E6410 | Date | Mon, 02 Oct 2017 12:10:01 -0700 |
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-------- Original Message -------- Subject: Re: keyboard backlight max_brightness bug on Dell Latitude E6410 From: Pali Rohár <pali.rohar@gmail.com> Date: Mon, October 02, 2017 8:15 am To: gabriel@tekgnowsys.com Cc: andy.shevchenko@gmail.com, gabriel@tekgnowsys.com, gabriele.mzt@gmail.com, dvhart@infradead.org, andy@infradead.org, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, Mario.Limonciello@dell.com
On Monday 02 October 2017 13:06:46 Mario.Limonciello@dell.com wrote: > > -----Original Message----- > > From: Pali Rohár [mailto:pali.rohar@gmail.com] > > Sent: Monday, October 2, 2017 6:53 AM > > To: Andy Shevchenko <andy.shevchenko@gmail.com> > > Cc: Gabriel M. Elder <gabriel@tekgnowsys.com>; Gabriele Mazzotta > > <gabriele.mzt@gmail.com>; Limonciello, Mario <Mario_Limonciello@Dell.com>; > > Darren Hart <dvhart@infradead.org>; Andy Shevchenko <andy@infradead.org>; > > platform-driver-x86@vger.kernel.org; linux-kernel@vger.kernel.org > > Subject: Re: keyboard backlight max_brightness bug on Dell Latitude E6410 > > > > On Friday 29 September 2017 18:19:59 Andy Shevchenko wrote: > > > >> FYI, latest update and info relating to > > > >> https://bugzilla.kernel.org/show_bug.cgi?id=196913 > > > > > > Quick solution is to apply DMI to that. > > > > It is only the Dell Latitude E6410 affected? > > > > Mario, do you have any information about that API from Dell? > > > > -- > > Pali Rohár > > pali.rohar@gmail.com > > Pali, > > I believe this particular API shouldn't have changed over generations, so it's > likely something that needs to be quirked for that generation. > I haven't had a chance to check on this yet in detail though. > For now could you guys quirk this one and if I find out there was something > more systemic we can undo the quirk and do something more broad. > > Thanks,
Ok! Gabriel, can you provide us your DMI information about your machine?
They are included in following files: /sys/class/dmi/id/sys_vendor /sys/class/dmi/id/product_name
Beware that they may contain whitespace characters and it is important.
-- Pali Rohár pali.rohar@gmail.com
------------------------------------------------------------------------------- # cat -v /sys/class/dmi/id/sys_vendor Dell Inc. # cat -v /sys/class/dmi/id/product_name Latitude E6410 # cat -v /sys/class/dmi/id/sys_vendor | hexdump 0000000 6544 6c6c 4920 636e 0a2e 000000a # cat -v /sys/class/dmi/id/product_name | hexdump 0000000 614c 6974 7574 6564 4520 3436 3031 000a 000000f
Also updated https://bugzilla.kernel.org/show_bug.cgi?id=196913 with this info
- Gabriel -------------------------------------------------------------------------------
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