[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Cornelius]

The mentioned workaround fix the problem on my Dell Precision 7510. And
more important it also fixes a assumed random crash after
suspend/resume. It comes out that the xsession creashes when I suspend
on docking station, then remove the laptop from docking station, resume
and switch off keyboard backlight, go to suspend again and finally
resume on docking station. Take a bit to get this combination ;)

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Amr Ibrahim]

** Changed in: hundredpapercuts
   Status: Confirmed => Fix Released

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[David Rosenstrauch]

Thanks for sharing the fixes everyone.  I was able to get this to work
too.

For the record, the fix for me was the following:

1) mask the dell::kbd_backlight.service, as described above
2) go into the bios, and change the keyboard led timeout from 10s to 5s

Note that it had to be done in that order.  For some reason if the
kbd_backlight service is not masked, it somehow forces the bios led
timeout back to 10s, and then the keyboard led always remains lit.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Omar Riverol]

Dell Latitude 7470:

Fixed by following #98 and finally #101.

#98 Step two --> For clarity sake, Go to BIOS setting by pressing F2 and
do as instructed.

Off to fix speaker crackling sound on boot.

Thanks Guys

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Grzegorz Ciołek]

Thanks Cristi,

This finally "fixed" auto backlit on my E7470 (after half a year).

Next - disappearing sound card and built-in LTE modem, not working mute
button in 4.8, dying WiFI card. You gotta love Ubuntu on Skylake ;-)

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Cristian Contescu]

OK, apart from the dbus denying in #98 which helps with the turning
fully on when the screen locks, in order to avoid the backlight turning
on during boot time, you need to mask (it cannot be disabled) the
systemd-backlight@leds\:dell\:\:kbd_backlight service:

sudo systemctl mask systemd-
backlight@leds\:dell\:\:kbd_backlight.service

Hope it helps until a proper fix is released.


Cheers,
Cristi

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Cristian Contescu]

The same problem on a Dell Latitude E5570:
- keyboard goes on full full-brightness at boot time
- keyboard turns on after screen lock exactly when the screen goes off (even if 
the keyboard backlight is off)
- the auto turn-off after the specified amount of time (set in the BIOS and 
visible in the /sys/class/leds/...) is completely dismissed - the keys stay on 
all the time

$ cat /sys/class/leds/dell\:\:kbd_backlight/stop_timeout 
10s

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Grzegorz Ciołek]

I've tried Billiot's approach (#98) - no luck either.

All is good during the boot.
But just a sec before displaying the login screen, the keyboard lits to maximum 
and stay like this.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Billiot]

This issue affected me with a new Dell E5470 on 14.04

The issue would go away with a factory reset but after doing updates it
would reappear.

The way I eventually got it fixed was

Step 1: as stated above

Edit file 
/etc/dbus-1/system.d/org.freedesktop.UPower.conf

change:

to:


Step 2: Bios

In my bios file I had to find the settings for the keyboard timeout and
change it to something else.  So if it was set to 5 seconds then I had
to change it to 10 seconds. If it was set to 10 seconds then I had to
change it to 5 seconds.

Once I rebooted my system the keyboard returned to the expected
behavior.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Grzegorz Ciołek]

Dell E7470, the latest BIOS, kernel 4.8.

$uname -a
Linux E7470 4.8.0-20-generic #22~16.04.1-Ubuntu SMP Mon Oct 3 03:19:50 UTC 2016 
x86_64 x86_64 x86_64 GNU/Linux

$ dpkg -s upower | grep -i 'status\|version'
Status: install ok installed
Version: 0.99.4-2ubuntu0.3

$ dpkg -s unity-settings-daemon | grep -i 'status\|version'
Status: install ok installed
Version: 15.04.1+16.04.20160701-0ubuntu1

The same behaviour as #92

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Konstantin]

Thanks Abel for the solution. I confirm that problem was solved by
installing 4.7.5 kernel on my Kubuntu 16.04 installation.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Abel]

I found another solution, seems to be better because, kernel version
4.4.0.21 has a bug within the suspend mode(sometimes works and sometimes
not) at least, happened to me in a Dell latitude e6420 and also this bug
of the backlight, so to fix it I updated the kernel version to 4.7.5 --
The only problem was that wireless stopped working, so to fix it I
connected through wired connection and I changed the driver,  after that
all works well!

check this: http://askubuntu.com/questions/574920/upgrading-to-3-18
-kernel-causes-wireless-not-to-work

**may be help:)
Sorry for my bad english.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Konstantin]

#93 happens on Kubuntu 16.04, 4.4.0-34-generic

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Konstantin]

Totally the same issue as #92 reported by Roland. Dell E5470. It doesn't
matter which value was writed to /sys/devices/platform/dell-
laptop/leds/dell::kbd_backlight it always conotains 2. As a result I
have keyboard backlight ebabled on every boot, after sleep mode and
logout. Solution from #46 and #47 works partially, it helps to avoid
enabling backlight on sleep mode and logout but it's still enabled after
every reboot.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Roland Lohner]

On Dell E5570,

gdbus call --system --dest org.freedesktop.UPower --object-path
/org/freedesktop/UPower/KbdBacklight --method
org.freedesktop.UPower.KbdBacklight.GetBrightness

works well, returns 0, 1, or 2, depending on keyboard backlight level
OFF, DIM, FULL.

But gdbus call --system --dest org.freedesktop.UPower --object-path
/org/freedesktop/UPower/KbdBacklight --method
org.freedesktop.UPower.KbdBacklight.SetBrightness i

switches backlight to full power independently of parameter i. Even
backlight timeout is deactivated: backlight just does not switch off.

This deactivated timeout "setting" made by Ubuntu is persisted. Even if
I reboot into DOS or BIOS setup, backlight just stays on. I have to
setup the timeout vale in BIOS again to activate the timeout function.

Ubuntu 16.04 with unity-settings-daemon version
15.04.1+16.04.20160209-0ubuntu2.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Grzegorz Ciołek]

E7470 - yes still affected - look here bug #1583861 and check my
comments #22

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Michael Rauch]

Dell Latitude 7470 is still affected with latest updates for 16.04.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Anton]

I am adding the Lenovo Thinkpad t430s kernel 4.4.0-28-generic #47-Ubuntu, 
unity-settings-daemon version 15.04.1+16.04.20160209-0ubuntu2 in list.
Workaround from #46 helped me.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Roland Lohner]

I am adding Dell E5570. Backlight turns on at boot and does not switch
off ever. Ubuntu 16.04 with unity-settings-daemon version
15.04.1+16.04.20160209-0ubuntu2. Workaround at #47 does not help either.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Jonathan Polak]

Yes Mike, Lenovo X230 still affected by this bug. Both in ubuntu and in
vanilla debian. This problem is upstream from ubuntu for sure.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Launchpad Bug Tracker]

** Branch linked: lp:~ci-train-bot/unity-settings-daemon/unity-settings-
daemon-ubuntu-xenial-landing-004

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Launchpad Bug Tracker]

** Branch linked: lp:~ci-train-bot/unity-settings-daemon/unity-settings-
daemon-ubuntu-xenial-landing-063

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Launchpad Bug Tracker]

** Branch linked: lp:~unity-settings-daemon-team/unity-settings-
daemon/x-sru2

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Launchpad Bug Tracker]

** Branch linked: lp:unity-settings-daemon/16.04

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[mike]

I am adding the Lenovo X230, ThinkPad-X230 4.4.0-24-generic #43-Ubuntu
to the list.  Ditto on the fix in #46 and #47.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Alex Mandel]

Just wanted to note this also effect Lenovo T450s, 4.4.0-24-generic
#43~14.04.1-Ubuntu . The fix in #46 and #47 seems to work. Will double
check if the fix has already made it to my other identical machine on
16.04.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Launchpad Bug Tracker]

This bug was fixed in the package unity-settings-daemon -
15.04.1+16.04.20160209-0ubuntu2

---
unity-settings-daemon (15.04.1+16.04.20160209-0ubuntu2) xenial; urgency=medium

  * plugins/power/gsd-power-manager.c:
- backport upstream "power: '0' keyboard backlight is a valid value",
  the change makes the keyboard backlight not being forced on at login
  (lp: #1510344)

 -- Sebastien Bacher   Fri, 13 May 2016 11:19:10
+0200

** Changed in: unity-settings-daemon (Ubuntu)
   Status: In Progress => Fix Released

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Martín Langberg]

I'm on the last version of unity-settings-daemon
(15.04.1+16.04.20160209-0ubuntu2) and still have this bug

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Alessio Treglia]

This is fixed for me too, cheers!

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Bob McChesney]

This appears to be fixed for me with latest updates from Ubuntu 16.04
LTS. Very happy.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Launchpad Bug Tracker]

This bug was fixed in the package unity-settings-daemon -
15.04.1+16.04.20160209-0ubuntu2

---
unity-settings-daemon (15.04.1+16.04.20160209-0ubuntu2) xenial; urgency=medium

  * plugins/power/gsd-power-manager.c:
- backport upstream "power: '0' keyboard backlight is a valid value",
  the change makes the keyboard backlight not being forced on at login
  (lp: #1510344)

 -- Sebastien Bacher   Fri, 13 May 2016 11:19:10
+0200

** Changed in: unity-settings-daemon (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Sebastien Bacher]

** Tags removed: verification-needed
** Tags added: verification-done

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Treviño]

** Branch unlinked: lp:~3v1n0/unity-settings-daemon/kbd-brightness-
update

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Treviño]

I've moved the part related to idle backlight reset to bug #1583861

** No longer affects: upower (Ubuntu)

** No longer affects: upower (Ubuntu Xenial)

** No longer affects: upower

** Patch removed: "upower-always-get-kbd-brightness.debdiff"
   
https://bugs.launchpad.net/dell-sputnik/+bug/1510344/+attachment/4665009/+files/upower-always-get-kbd-brightness.debdiff

** Patch removed: "0001-Fixed-dell-laptop-keyboard-backlight.patch"
   
https://bugs.launchpad.net/dell-sputnik/+bug/1510344/+attachment/4640489/+files/0001-Fixed-dell-laptop-keyboard-backlight.patch

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  Keyboard Backlight Turns on at boot

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Matthias König]

This is weird: I have reverted the changes I made according to #47 but
the bug is still fixed, even though you say that it's not yet in the
updates? Is there a logical explanation to this?

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Joseph Salisbury]

** Tags removed: kernel-da-key

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Treviño]

Updated the upower patch, as requested on upstream bug.
Attaching new debdiff here.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Mathew Hodson]

** Changed in: unity-settings-daemon (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: upower (Ubuntu Xenial)
   Importance: Undecided => Medium

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Treviño]

We should probably split this bug into two: one is this one, the other
one is "keyboard backlight is not properly restored after idle"

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Matthias König]

Does this mean I can revert the changes I made applying the workaround
from #47 and wait for a future update?

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Re: [Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Mario Limonciello]

Depends which problem was bothering you. It's coming in two updates. One to
upower (related to run time problems) and the other in unity settings
daemon (related to turning on at lock screen). The unity settings daemon
one is in proposed and if no regressions are found it will come to updates
in a week or two.

The upower one isn't yet in proposed. Once it is it will land in a similar
timeline as long as no regressions are found.

On Wed, May 18, 2016, 09:56 Matthias König 
wrote:

> Does this mean I can revert the changes I made applying the workaround
> from #47 and wait for a future update?
>
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Re: [Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Mario Limonciello]

Sorry - USD one is related to turning on boot I mean.

On Wed, May 18, 2016, 09:59 Mario Limonciello 
wrote:

> Depends which problem was bothering you. It's coming in two updates. One
> to upower (related to run time problems) and the other in unity settings
> daemon (related to turning on at lock screen). The unity settings daemon
> one is in proposed and if no regressions are found it will come to updates
> in a week or two.
>
> The upower one isn't yet in proposed. Once it is it will land in a similar
> timeline as long as no regressions are found.
>
> On Wed, May 18, 2016, 09:56 Matthias König 
> wrote:
>
>> Does this mean I can revert the changes I made applying the workaround
>> from #47 and wait for a future update?
>>
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>>
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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Sam Hauglustaine]

Just tested the new version of unity-settings-daemon in xenial-proposed and it 
works.
Great! Thank you Martin!

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Martin Pitt]

Hello Charles, or anyone else affected,

Accepted unity-settings-daemon into xenial-proposed. The package will
build now and be available at https://launchpad.net/ubuntu/+source
/unity-settings-daemon/15.04.1+16.04.20160209-0ubuntu2 in a few hours,
and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Also affects: upower (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Also affects: unity-settings-daemon (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Changed in: unity-settings-daemon (Ubuntu Xenial)
   Status: New => Fix Committed

** Tags added: verification-needed

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Treviño]

So, I've proposed a patch for upower, and I'm attaching here the debdiff to get 
this in ubuntu package.
Also, to get this working, we need unity-settings-daemon to be patched with 
this lp:~3v1n0/unity-settings-daemon/kbd-brightness-update

** Patch added: "upower-always-get-kbd-brightness.debdiff"
   
https://bugs.launchpad.net/ubuntu/+source/upower/+bug/1510344/+attachment/4665009/+files/upower-always-get-kbd-brightness.debdiff

** Changed in: upower (Ubuntu)
   Importance: Undecided => Medium

** Changed in: upower (Ubuntu)
 Assignee: (unassigned) => Marco Trevisan (Treviño) (3v1n0)

** Changed in: upower (Ubuntu)
   Status: New => In Progress

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Launchpad Bug Tracker]

** Branch linked: lp:~3v1n0/unity-settings-daemon/kbd-brightness-update

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Treviño]

** Also affects: upower (Ubuntu)
   Importance: Undecided
   Status: New

** Bug watch added: freedesktop.org Bugzilla #95457
   https://bugs.freedesktop.org/show_bug.cgi?id=95457

** Also affects: upower via
   https://bugs.freedesktop.org/show_bug.cgi?id=95457
   Importance: Unknown
   Status: Unknown

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Re: [Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Treviño]

I already had a discussion with pitti, but I'll ask to Hugsie for
confirmation... However I've already almost ready a patch for this.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Mario Limonciello]

Marco,

Will you reach out to upstream then about this?

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Allen Hung]

My statement in #50 has some incorrectness. I thought unity does not
query current brightness, but accrording to Marco has addressed in #64
it is because upower always returns the cached brightness value.I do
agree the change has to be made at UPower side.

I also agree the commit c311de72495efdc757edb3cd59b1455541532eb7 should
be able to fix the issue at boot.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Treviño]

Mario, yeah... Also ThinkPads have the same problem, because no event is
sent from the kernel.

So, I had the same idea you had to fix this. However the change has to
be done at UPower level, since if u-p-s (or you try with gdbus call)
calls GetBrigthtness it always get the last cached value.

So, in my opinion, UPower should have a trick to fetch the current value
on get, and not return the cached value. In this way we can add a
workaround (which I already have in terms of code) to UPS to update the
cached brightness when changing it.

Not sure how upstream would see that, but I think we can try.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Treviño]

Mario, yeah... Also ThinkPads have the same problem, because no event is
sent from the kernel.

So, I had the same idea you had to fix this. However the change has to
be done at UPower level, since if u-p-s (or you try with gdbus call)
calls GetBrigthtness it always get the last cached value.

So, in my opinion, UPower should have a trick to fetch the current value
on get, and not return the cached value. In this way we can add a
workaround (which I already have in terms of code) to UPS to update the
cached brightness when changing it.

Not sure how upstream would see that, but I think we can try.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Mario Limonciello]

Since no events are actually sent - could you query the current
brightness before trying to change it?

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Mario Limonciello]

@seb128:
I tested with usd stopped per your recommendation and problem #2 as I described 
my reproducer above doesn't hapen.

@marco:
I see how that patch could help and where you are going with this, but 
unfortunately that doesn't do the trick.  There are no events from either gdbus 
monitor or udevadvm monitor when the keys are pressed.

During a lock cycle after the display turns off I get this output:
t@t-XPS-13-9350:~$ gdbus monitor --system --dest org.freedesktop.UPower
Monitoring signals from all objects owned by org.freedesktop.UPower
The name org.freedesktop.UPower is owned by :1.57
/org/freedesktop/UPower/KbdBacklight: 
org.freedesktop.UPower.KbdBacklight.BrightnessChanged (0,)
/org/freedesktop/UPower/KbdBacklight: 
org.freedesktop.UPower.KbdBacklight.BrightnessChanged (2,)

Nothing from udevadm monitor.

I am able to cat /sys/devices/platform/dell-
laptop/leds/dell::kbd_backlight at any time and get the right value that
reflects what the keys were set to.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Mathew Hodson]

** No longer affects: linux (Ubuntu)

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Treviño]

Mario, as for the lock/idle problem is a different issue.

Things depend also on the hardware and how the kernel supports the notification 
of the kbd backlight changes, but if all is well supported this change should 
help:
https://code.launchpad.net/~3v1n0/unity-settings-daemon/keep-cached-kbd-backlight-updated/+merge/294662

It would be cool if you can try unity-settings-daemon with that patch.

Also, please provide logs when running
 gdbus monitor  --system --dest org.freedesktop.UPower

And:
  udevadm monitor

While you use the keybindings to change the keyboard backlight and
during a lock/idle/suspend cycle.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Launchpad Bug Tracker]

** Branch linked: lp:~3v1n0/unity-settings-daemon/keep-cached-kbd-
backlight-updated

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Launchpad Bug Tracker]

** Branch linked: lp:~seb128/unity-settings-daemon/better-keyboard-
backlight

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Sebastien Bacher]

** Tags added: desktop-trello-import

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Bug Watch Updater]

** Changed in: gnome-settings-daemon
   Status: Unknown => Fix Released

** Changed in: gnome-settings-daemon
   Importance: Unknown => Medium

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Sebastien Bacher]

the log doesn't seem to have useful clue ... could you "stop unity-
settings-daemon" and lock/unlock the screen, just to see if that's also
doing it without usd?

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Mario Limonciello]

Sure.  Here you go.


** Attachment added: "usd.txt"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1510344/+attachment/4661498/+files/usd.txt

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Sebastien Bacher]

@Mario, thanks for testing the fix! I'm going to upload/SRU that one to
start then. Could you run unity-settings-daemon with --debug and share
the log? it might give an hint on what is happening with the other issue

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Mario Limonciello]

Well there are really two problems here as I understand it.
I can however confirm that that the first problem (backlight turns on on it's 
own at boot) is fixed by this patch.  So that's a definite improvement.

The second problem (backlight turns on on it's own after unlock) I can still 
reproduce.  Here is my reproduce scenario.
1) Install patched u-s-d from patch in #55.
2) Turn on backlight with hotkey.
3) Shutdown machine.
4) Turn on machine.
5) Log in.
6) Turn off backlight with hotkey.
7) Lock machine (ctrl-alt-l), wait for screensaver to kick in.
8) unlock machine
9) Notice that backlight turned back on.

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  Keyboard Backlight Turns on at boot

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Sebastien Bacher]

hum, we should backport that commit https://git.gnome.org/browse/gnome-
settings-daemon/commit/?id=c311de7 ... it might be enough to fix the
issue, could somebody try to build unity-settings-daemon with that
simple change and see if it's enough to resolve the issue?

** Changed in: unity-settings-daemon (Ubuntu)
   Importance: Undecided => High

** Changed in: unity-settings-daemon (Ubuntu)
   Status: Confirmed => In Progress

** Bug watch added: GNOME Bug Tracker #734074
   https://bugzilla.gnome.org/show_bug.cgi?id=734074

** Also affects: unity-settings-daemon via
   https://bugzilla.gnome.org/show_bug.cgi?id=734074
   Importance: Unknown
   Status: Unknown

** Project changed: unity-settings-daemon => gnome-settings-daemon

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Pavel Gluschak]

** Tags removed: patch

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Will Cooke]

Added to Trello: https://trello.com/c/WMkMUwl1/3-bug-1510344-keyboard-
backlight-turns-on-at-boot

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Ubuntu Foundations Team Bug Bot]

The attachment "0001-Fixed-dell-laptop-keyboard-backlight.patch" seems
to be a patch.  If it isn't, please remove the "patch" flag from the
attachment, remove the "patch" tag, and if you are a member of the
~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by
~brian-murray, for any issues please contact him.]

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: unity-settings-daemon (Ubuntu)
   Status: New => Confirmed

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Mario Limonciello]

Based on comments #46-#50, closing out the linux kernel related tasks.
Thanks to Allen's in depth investigation it's clear that this is caused
by Unity.

** Also affects: unity-settings-daemon (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: linux (Ubuntu)
   Status: Triaged => Invalid

** Changed in: linux
   Status: New => Invalid

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Allen Hung]

I am working in Dell. I have some digging on this issue. There are two
symptoms reported in the thread – the keyboard backlight unexpectedly
turns ON on boot and after the resume from a screen lock. These are due
to two different causes.

- the backlight unexpectedly turns ON on boot, regardless of the
previous state of brightness. This is an intentional behavior of “unity-
settings-daemon”. This daemon reads the brightness value of
kbd_backlight (via “upowerd”) when system starts up, and turn it on (via
upowerd) if the read value is 0 (which indicates the backlight is off).
Even worse, the daemon does not make this behavior configurable.

- The backlight unexpectedly turns ON after the resume from a screen
lock, regardless of the previous state of brightness. The “unity-
settings-daemon” also deals with power management things. It turns the
backlight off when the system is about to dim screen for power saving
reason. Also, the daemon thought itself as the only S/W piece that can
set the brightness of backlight and no other ones will change it, so it
does not query for the current state of backlight before dimming it. But
the fact is, Dell’s BIOS already dimmed the backlight due to a timeout
of idle. When screen resumes, the daemon resumes the backlight to ON as
it assumed the backlight was ON before dim.

The issue should start happening since the introduce of commit
6cff8d60aa0aba5583ecda09984dbcb2f24cc28d (pointed out in #5), because it
implements a new “kbd_backlight” driver in dell-laptop kernel module. It
it gives the chance to “upowerd” for having the control over the
keyboard backlight hardware on Dell laptops.

The workaround provided in #47 does work because it denies “unity-
settings-daemon” from sending DBUS commands that regarding kbd_backlight
set/get to upowerd.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Andrey Ivannikov]

Also appears to work on my Dell XPS 13 9343. Have not seen the keyboard
backlight come on for the past couple of days.

16.04
4.4.0-22-generic

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Milos]

This worked for my P50 also. Thanks.

16.04
4.6.0-040600rc1

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[ficestat]

This workaround worked for me on a Dell Latitude E7450 Ubuntu 16.04
kernel 4.6 RC 4

In the file:
/etc/dbus-1/system.d/org.freedesktop.UPower.conf
change:

to:


and reboot.
Source: 
https://askubuntu.com/questions/700069/keyboard-backlight-turns-on-after-lock-screen-display-on

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Anders Trier Olesen]

This workaround worked for me on a Dell Latitude E5530 running Ubuntu 16.04.
In the file:
/etc/dbus-1/system.d/org.freedesktop.UPower.conf
change:

to:


and reboot.
Source: 
https://askubuntu.com/questions/700069/keyboard-backlight-turns-on-after-lock-screen-display-on

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Joseph Salisbury]

This issue appears to be an upstream bug, since you tested the latest
upstream kernel. Would it be possible for you to open an upstream bug
report[0]? That will allow the upstream Developers to examine the issue,
and may provide a quicker resolution to the bug.

Please follow the instructions on the wiki page[0]. The first step is to
email the appropriate mailing list. If no response is received, then a
bug may be opened on bugzilla.kernel.org.

Once this bug is reported upstream, please add the tag: 'kernel-bug-
reported-upstream'.

[0] https://wiki.ubuntu.com/Bugs/Upstream/kernel

** Changed in: linux (Ubuntu)
   Status: Confirmed => Triaged

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Pavel Gluschak]

Tested on latest upstream kernel linux-image-4.6.0-040600rc6. Problem
persists.

** Tags added: kernel-bug-exists-upstream

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Milos]

I forgot to add, it was clean install of 16.04.
15.10 on the same machine worked without this issue as well as Mint 17.3.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Milos]

I am experiencing the very same issue on my Lenovo Thinkpad P50.

16.04
4.6.0-040600rc1

It is really annoying.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Joseph Salisbury]

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc6-wily/


** Changed in: linux (Ubuntu)
   Importance: Low => Medium

** Tags added: kernel-da-key

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Jan Koci]

Followup on #39 - I have just noticed that the backlight switches on
after few seconds of inactivity (14.04.4 with 4.2 kernel). AFAIK this
wasn't the case with 4.4 kernel (16.04).

I also checked and after opening the laptop lid and waking up, the
backlight is off, just as in 4.4 (at least on my model, Dell Latitude
E6420).

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Jan Koci]

I can partially reproduce this bug on Dell Latitude E6420.

Namely in 16.04 (4.4 kernel) backlight was always on after (re)boot and
screenlock, however waking up (opening laptop) does not switch backlight
on. Moreover I could control the backlight (i.e. switch it off),
contrary to some reports above.

After downgrade to 14.04.4 (4.2 kernel; downgraded for plethora of more
serious issues) this still occurs at least after boot and screenlock
(I'm still copying my backup to hdd so I don't want to test waking up).
I can still control it and switch it off (with Fn+rightarrow on my
model).

Last kernel this worked for me properly was 3.19 (14.04.3 with vivid
kernel I believe).

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[x-blade-x]

Confirmed with XPS 13 9343 with 16.04 LTS. In 15.04 the keyboard
backlight worked perfectly.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Francisco Vides Fernandez]

I confirm that this bug is still present in Dell Inspiron 7537, upgraded
from 15.04 (via 15.10). In 15.04 wasn't.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Alexey Pivovarsky]

I confirm that this bug is still present on 9343 with 16.04 LTS.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Axel G. Rossberg]

If it annoys me too much, I do three times

echo 0|sudo tee /sys/class/leds/dell\:\:kbd_backlight/brightness

This tends to keep the backlight off for a while.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[claudio@ubuntu]

This bug is so annoying because of the design of the keyboard backlight
in a lot of Dell laptops (incl mine, 7537): in daytime the backlight
make keys unreadable (they are painted grey with the character in
transparent plastic). It is even annoying even when you type blindly:
you automatically try to make out the characters because of the light
drawing the attention.

I haven't try the patch yet as I hope the 16.04 release would fix the
problem. It didn't.

C.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Charles Profitt]

I confirmed this bug is still present with Dell XPS 13 9343 on 16.04
release.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Artem Rachitskiy]

Same with Dell e7470 on 16.04 release.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[ficestat]

Problem occurs with dell latitude e7450 4.6 kernel rc4 and latest bios
a12

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Andy Voigt]

The bug still exist with the 4.5 Kernel on my   Precision 7510.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Pavel Gluschak]

I see, that some changed in dell_laptop and dell_wmi modules are
appeared in kernel 4.5. Though I'm not sure, that it fixes topic
problem.

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Ubuntu Foundations Team Bug Bot]

** Tags added: patch

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Andy Voigt]

Hello,

i've attached a small  patch that fix the problem on my Dell Precision
7510. Basically the function "kbd_set_state_safe" returns now null and
don't try to set a old state.

Regards, Andy

** Patch added: "0001-Fixed-dell-laptop-keyboard-backlight.patch"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1510344/+attachment/4640489/+files/0001-Fixed-dell-laptop-keyboard-backlight.patch

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Michal]

Same bug with Dell XPS 13 9350. Very very annoying.

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Re: [Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Tibor Lipusz]

Looks like nobody is interested in fixing this...

Sent from mobile
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On Apr 16, 2016 4:05 PM, "Balazs Wittmann" <1510...@bugs.launchpad.net>
wrote:

> This bug still exists in the current 16.04 LTS daily build (2016.04.15)
> with a 4.4.0 linux kernel. I have a Dell Inspiron 7537.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1510344
>
> Title:
>   Keyboard Backlight Turns on at boot
>
> Status in Dell Sputnik:
>   Confirmed
> Status in One Hundred Papercuts:
>   Confirmed
> Status in Linux:
>   New
> Status in linux package in Ubuntu:
>   Confirmed
>
> Bug description:
>   System: Dell XPS 13 9343
>
>   Action: Boot computer
>
>   Expected Behavior: Keyboard backlight would be off when computer is
>   booted
>
>   Actual Behavior: Keyboard backlight is on at boot
>
>   This did not happen with Ubuntu 15.04
>
>   There are new files in Ubuntu 15.10 -
>   /sys/class/leds/dell::kbd_backlight$
>
>   cat stop_timeout
>   60s
>
>cat start_triggers
>   +keyboard +touchpad
>
>   cat trigger
>   [none] AC-online BAT0-charging-or-full BAT0-charging BAT0-full
> BAT0-charging-blink-full-solid usb-gadget usb-host cpu0 cpu1 cpu2 cpu3 mmc0
> rfkill0
>
>   cat brightness
>   2
>
>   ---
>
>   Unsure if these files are important, but included in the report
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 15.10
>   Package: linux-image-4.1.0-2-generic 4.1.0-2.2
>   ProcVersionSignature: Ubuntu 4.1.0-2.2-generic 4.1.3
>   Uname: Linux 4.1.0-2-generic x86_64
>   ApportVersion: 2.18-0ubuntu5
>   Architecture: amd64
>   AudioDevicesInUse:
>USERPID ACCESS COMMAND
>/dev/snd/controlC1:  ubuntu 2488 F pulseaudio
>/dev/snd/controlC0:  ubuntu 2488 F pulseaudio
>   CasperVersion: 1.362
>   CurrentDesktop: Unity
>   Date: Tue Oct 27 01:29:47 2015
>   IwConfig:
>enx00249b0981e3  no wireless extensions.
>
>lono wireless extensions.
>   LiveMediaBuild: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150730)
>   MachineType: Dell Inc. XPS 13 9343
>   ProcEnviron:
>TERM=xterm-256color
>PATH=(custom, no user)
>XDG_RUNTIME_DIR=
>LANG=en_US.UTF-8
>SHELL=/bin/bash
>   ProcFB: 0 inteldrmfb
>   ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi
> file=/cdrom/preseed/username.seed boot=casper quiet splash ---
> cdrom-detect/try-usb=true noprompt
>   RelatedPackageVersions:
>linux-restricted-modules-4.1.0-2-generic N/A
>linux-backports-modules-4.1.0-2-generic  N/A
>linux-firmware   1.145
>   RfKill:
>0: hci0: Bluetooth
> Soft blocked: no
> Hard blocked: no
>   SourcePackage: linux
>   UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 07/14/2015
>   dmi.bios.vendor: Dell Inc.
>   dmi.bios.version: A05
>   dmi.board.name: 0TM99H
>   dmi.board.vendor: Dell Inc.
>   dmi.board.version: A00
>   dmi.chassis.type: 9
>   dmi.chassis.vendor: Dell Inc.
>   dmi.modalias:
> dmi:bvnDellInc.:bvrA05:bd07/14/2015:svnDellInc.:pnXPS139343:pvr:rvnDellInc.:rn0TM99H:rvrA00:cvnDellInc.:ct9:cvr:
>   dmi.product.name: XPS 13 9343
>   dmi.sys.vendor: Dell Inc.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/dell-sputnik/+bug/1510344/+subscriptions
>

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Title:
  Keyboard Backlight Turns on at boot

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Balazs Wittmann]

This bug still exists in the current 16.04 LTS daily build (2016.04.15)
with a 4.4.0 linux kernel. I have a Dell Inspiron 7537.

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Title:
  Keyboard Backlight Turns on at boot

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Mathieu Cinquin]

Same bug with Dell XPS 13 9350.

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Title:
  Keyboard Backlight Turns on at boot

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[luizzcosta]

I have the same issue as Balasz:

1. When I turn on or restart the notebook.
2. When I wake up the notebook.
3. When I don't use the keyboard and the touchpad for a few seconds.

on a Dell Inspiron 14r 5447.

Any update on how to solve this issue?

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Title:
  Keyboard Backlight Turns on at boot

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[Bug 1510344] Re: Keyboard Backlight Turns on at boot

[Paolo Pustorino]

Same for my on a Dell Inspiron 7535.

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Title:
  Keyboard Backlight Turns on at boot

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