-------- Original Message -------- Subject: Re: keyboard backlight max_brightness bug on Dell Latitude E6410 From: Pali Rohár <pali.ro...@gmail.com> Date: Mon, October 02, 2017 8:15 am To: gabr...@tekgnowsys.com Cc: andy.shevche...@gmail.com, gabr...@tekgnowsys.com, gabriele....@gmail.com, dvh...@infradead.org, a...@infradead.org, platform-driver-...@vger.kernel.org, linux-kernel@vger.kernel.org, mario.limoncie...@dell.com
On Monday 02 October 2017 13:06:46 mario.limoncie...@dell.com wrote: > > -----Original Message----- > > From: Pali Rohár [mailto:pali.ro...@gmail.com] > > Sent: Monday, October 2, 2017 6:53 AM > > To: Andy Shevchenko <andy.shevche...@gmail.com> > > Cc: Gabriel M. Elder <gabr...@tekgnowsys.com>; Gabriele Mazzotta > > <gabriele....@gmail.com>; Limonciello, Mario <mario_limoncie...@dell.com>; > > Darren Hart <dvh...@infradead.org>; Andy Shevchenko <a...@infradead.org>; > > platform-driver-...@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.ro...@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.ro...@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 -------------------------------------------------------------------------------
