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SubjectRe: "Setting old previous keyboard state failed" error on Dell E7270
On Thu, 17 Nov 2016 15:20:25 +0100,
Pali Rohár wrote:
>
> On Thursday 17 November 2016 15:13:59 Takashi Iwai wrote:
> > On Thu, 17 Nov 2016 14:21:23 +0100,
> >
> > Takashi Iwai wrote:
> > > On Thu, 17 Nov 2016 13:19:16 +0100,
> > >
> > > Pali Rohár wrote:
> > > > Anyway, keyboard backlight control in kernel is implemented from
> > > > program smbios-keyboard-ctl provided and supported by Dell. I do
> > > > not see any update to that program in upstream git repository.
> > > >
> > > > http://github.com/dell/libsmbios/blob/master/src/bin/smbios-keybo
> > > > ard-ctl
> > >
> > > I'll give it a try shortly later.
> >
> > Tried the latest git version now, and it didn't work.
> > At setting the mode via smbios-keyboard-ctl --set-mode, it always
> > return an error like:
> >
> > Set Trigger Failed. Failed to write config
> > Error Return Code : cbRES1: 0x-2 cbRES2: 0xA000000 cbRES3: 0x0
> >
> > The error code is same no matter which mode is to set.
> ...
> > > > 2) smbios-keyboard-ctl is not working too -- in this case please
> > > > report bug to that libsmbios project and Dell needs to fix it
> >
> > So the latter case.
> > I'm going to ping smbios maintainer.
>
> Ok. Ideally also open public bug report on github tracker so other
> people can find some information about it...

FYI, I found one there and now put my comment:
https://github.com/dell/libsmbios/issues/3


Takashi

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