[MX4] LED does not notify for incoming notifications

[Omer Akram]

Image r12

The notification LED on the device does not blink when a new SMS arrives. Its always static off. It however does lighten up when the button physical button is pressed.

[kevin gunn (kgunn72)]

is this only on arale ?

[Michael Zanetti (mzanetti)]

Yes, works on krillin, doesn't work on arale.

Unity8 uses the android-headers package to accomplish that for krillin. That gives us the following options to initialize lights:

LIGHT_ID_BACKLIGHT
LIGHT_ID_KEYBOARD
LIGHT_ID_BUTTONS
LIGHT_ID_BATTERY
LIGHT_ID_NOTIFICATIONS
LIGHT_ID_ATTENTION

Krillin works fine with LIGHT_ID_NOTIFICATIONS, however, arale doesn't. I have tried with all the others and the only one that actually does something on arale is LIGHT_ID_BACKLIGHT, which is obviously not what we want. If we can talk to the lights at all, this probably needs to be fixed on the android side of things.

[Michael Zanetti (mzanetti)]

According to ogra we can control the light using: /sys/class/leds/mx-led/trigger

[Oliver Grawert (ogra)]

echo 1 >/sys/class/leds/mx-led/blink
(as root) makes the led blink

echo 0 >/sys/class/leds/mx-led/blink
stops teh blinking

the triggers are rather for specific use cases ...

[Launchpad Janitor (janitor)]

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

[Pat McGowan (pat-mcgowan)]

Not sure what component to task but Alex will look into it

[Alex Tu (alextu)]

My plan will be checking the behavior on flyme and try to apply that on
Arale.

Pat McGowan <email address hidden> 於 2015/6/26週五 下午 8:50 寫道：

> Not sure what component to task but Alex will look into it
>
> ** Also affects: canonical-devices-system-image
> Importance: Undecided
> Status: New
>
> ** Changed in: canonical-devices-system-image
> Importance: Undecided => Critical
>
> ** Changed in: canonical-devices-system-image
> Status: New => Confirmed
>
> ** Changed in: canonical-devices-system-image
> Milestone: None => ww28-2015
>
> ** Changed in: canonical-devices-system-image
> Assignee: (unassigned) => Yuan-Chen Cheng (ycheng-twn)
>
> ** Changed in: indicator-messages (Ubuntu)
> Importance: Undecided => Critical
>
> ** Changed in: indicator-messages (Ubuntu)
> Assignee: (unassigned) => Alex Tu (alextu)
>
> --
> You received this bug notification because you are a bug assignee.
> https://bugs.launchpad.net/bugs/1461682
>
> Title:
> [MX4] LED does not notify for incoming notifications
>
> Status in the base for Ubuntu mobile products:
> Confirmed
> Status in indicator-messages package in Ubuntu:
> Confirmed
> Status in qtubuntu package in Ubuntu:
> Confirmed
> Status in unity8 package in Ubuntu:
> Confirmed
>
> Bug description:
> Image r12
>
> The notification LED on the device does not blink when a new SMS
> arrives. Its always static off. It however does lighten up when the
> button physical button is pressed.
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/canonical-devices-system-image/+bug/1461682/+subscriptions
>

[Chunsang Jeong (chunsang)]

Refer to the patches for MX4 at;
https://bugs.launchpad.net/tangxi/+bug/1469591/comments/1

[Chunsang Jeong (chunsang)]

Currently MX4 didn't seem to implement all notifications listed #2, otherwise only uses a few of locally defined led notifications. If we need to support all notifications, we could support them simply as #10 but it might be combinations of brightness & blinking mainly because it only has a white led and blinking itself is pre-defined by kernel (user can only enable/disable it).

[Yuan-Chen Cheng (ycheng-twn)]

will release on next update.

[Oliver Grawert (ogra)]

@George: note that this has not been released yet, we usually keep bugs in "Fix Committed" state until the actual OTA was released to the endusers ...

[You-Sheng Yang (vicamo)]

Merge proposal https://code-review.tangxi-git.canonical.com/719 moved to https://code.launchpad.net/~tangxi-team/tangxi/+git/platform_mediatek/+merge/281051