Screen doesn't wake up when on minimum brightness

Bug #1459121 reported by Josué
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Canonical System Image
Incomplete
Undecided
Unassigned
Unity System Compositor
New
Undecided
Unassigned
unity-system-compositor (Ubuntu)
New
Undecided
Unassigned
unity8 (Ubuntu)
Invalid
Undecided
Unassigned

Bug Description

ubuntu 15.10 for phones beta r.223 (bq aquaris ubuntu edition)

Since r.222 upgrade i noticed that sometimes I cant unlock the phone.
When i push unlock button (one time) looks like nothing happens, screen doesn't woke up.
If i press a second time screen woke up for half second showing unlock screen.

When it happens, i know that the OS is running because when i push the unlock button(first time), i can make a screen shot pushing up volume and down volume at same time it also reproduce the sound.

Looks that the only problem is to wakeup the screen.

It began to happen without install any program, just upgrades.
When it happened to me I think that I haven't opened any app.

Revision history for this message
Ubuntu Foundations Team Bug Bot (crichton) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1459121/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

tags: added: bot-comment
affects: ubuntu → unity (Ubuntu)
tags: added: vivid
Stephen M. Webb (bregma)
affects: unity (Ubuntu) → unity8 (Ubuntu)
tags: added: bq
Revision history for this message
Michael Zanetti (mzanetti) wrote :

This can be reproduced by setting screen brightness to a minimum and turning off the screen. Also happens on auto brightness and when being in a dark place.

Seems the minimum supplied power for the display needs to be increased for tiny bit.

Changed in unity8 (Ubuntu):
status: New → Invalid
summary: - phone unlock screen
+ Screen doesn't wake up when on minimum brightness
Revision history for this message
Josué (j2g2rp) wrote :

I'll check this, I had this as autoadjust unless I now i put this at maximum (with autoadjust)

Revision history for this message
Josué (j2g2rp) wrote :

I checked it, if i turn the brightness to manual at minimum screen cant woke up but when it happened i had this at auto brightness adjust.
It didn't happen before...
Thanks for the answer.

Revision history for this message
Michael Zanetti (mzanetti) wrote :

I just upgraded to the latest vivid image and cannot reproduce this any more.

Josué, can you confirm this is fixed after upgrading?

Changed in canonical-devices-system-image:
status: New → Incomplete
Revision history for this message
Josué (j2g2rp) wrote :

I'm using vivid beta since one month ago and I never had seen it untill since four-five days... Maybe it's a coincidence....

kevin gunn (kgunn72)
tags: added: pm-fail
Revision history for this message
Michael Zanetti (mzanetti) wrote :

Yes. I also saw it some days ago for the first time. But since today's update it's gone again for me.

Revision history for this message
Josué (j2g2rp) wrote :

today's update? have you got r.224?

Revision history for this message
Michael Zanetti (mzanetti) wrote :

It was r17 on channel ubuntu-touch/rc-proposed/bq-aquaris.en. Now it's r18.

Revision history for this message
Josué (j2g2rp) wrote :

Oups. My version is 15.10 r.223 looks like i jumped with last upgrade to next proposed... Ill try to change the tags

Josué (j2g2rp)
description: updated
tags: added: 15.10 wily
removed: bot-comment
Revision history for this message
Jean-Baptiste Lallement (jibel) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue for you?
Thanks in advance.

Revision history for this message
Josué (j2g2rp) wrote :

No. It didn't happened again. It's working fine for me since then. =)

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