Re: [PATCH] Fix AC keyboard backlight timeout on Dell XPS 13 9370.

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On Mon, Jun 18, 2018 at 11:15:27AM +0200, Timur Kristóf wrote:
> On Mon, 2018-06-18 at 11:00 +0300, Andy Shevchenko wrote:
> > On Mon, Jun 18, 2018 at 3:59 AM <Mario.Limonciello@xxxxxxxx> wrote:
> > 
> > > Thanks for confirming.  My personal opinion is that the kernel
> > > shouldn't set
> > > precedent to this type of blanket quirk (all BIOS version) for
> > > machines with
> > > BIOS not matching kernel behavior but are still getting updates
> > > that can be
> > > fixed.  The proper thing to do is to get BIOS fixed in that
> > > instance.
> > > 
> > > Since Dell publishes FW updates to LVFS for this platform, fwupd is
> > > integrated
> > > into most major distros and it's really easy to install the updates
> > > from Linux I
> > > have confidence that affected people will be installing this BIOS
> > > update to
> > > fix the issue.
> > > 
> > > So I would say that either:
> > > 1) Drop this patch.
> > > 2) Create a new macro that can match < $VERSION and re-configure
> > > your patch
> > > to do that too.
> > > 3) Change your patch to detect if running on XPS 9370 and missing
> > > this token
> > > and show a warning in kernel log that there is a FW problem and you
> > > will want to check for a FW update to fix it.
> > 
> > Thanks, Mario, for your input!
> > 
> > I like options 1) or 3), though 3), if possible to reliably detect, I
> > prefer more. User needs to be informed that there is a BIOS fix.
> 
> I think 3) is not that hard to do. I'll look into it and send a patch
> (but probably not until next week).

Agreed. "Users that don't update their BIOS"... need to update their
BIOS.

Mario - thank you for your continued involvement in improving Linux
support on Dell, it makes a big difference. Much appreciated.

-- 
Darren Hart
VMware Open Source Technology Center



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