-------- Original Message -------- Subject: Re: keyboard backlight max_brightness bug on Dell Latitude E6410 From: Pali Rohár <pali.rohar@xxxxxxxxx> Date: Mon, October 02, 2017 8:15 am To: gabriel@xxxxxxxxxxxxxx Cc: andy.shevchenko@xxxxxxxxx, gabriel@xxxxxxxxxxxxxx, gabriele.mzt@xxxxxxxxx, dvhart@xxxxxxxxxxxxx, andy@xxxxxxxxxxxxx, platform-driver-x86@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Mario.Limonciello@xxxxxxxx On Monday 02 October 2017 13:06:46 Mario.Limonciello@xxxxxxxx wrote: > > -----Original Message----- > > From: Pali Rohár [mailto:pali.rohar@xxxxxxxxx] > > Sent: Monday, October 2, 2017 6:53 AM > > To: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> > > Cc: Gabriel M. Elder <gabriel@xxxxxxxxxxxxxx>; Gabriele Mazzotta > > <gabriele.mzt@xxxxxxxxx>; Limonciello, Mario <Mario_Limonciello@xxxxxxxx>; > > Darren Hart <dvhart@xxxxxxxxxxxxx>; Andy Shevchenko <andy@xxxxxxxxxxxxx>; > > platform-driver-x86@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > > 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@xxxxxxxxx > > 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@xxxxxxxxx ------------------------------------------------------------------------------- # 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 -------------------------------------------------------------------------------
