After screen blanks unable to unblank on Qt 5.2

[Timo Jyrinki]

Steps to reproduce on device (mako):

1. Upgrade. Instructions on upgrading should be always visible at https://launchpad.net/~canonical-qt5-edgers/+archive/qt5-beta2 page.

2. Let the device blank its screen, try to push power button to wake it up again. Nothing seems to happen, and nothing also crashes.

[kevin gunn (kgunn72)]

think this might be more unity-mir than unity

[Albert Astals Cid (aacid)]

Isn't this happening on non Qt 5.2 too?

[Timo Jyrinki (timo-jyrinki)]

Yes, it seems so this still happens with Qt 5.2. Once I let the screen blank itself, I can't lit it again via powerbutton or powerd-cli display on bright. Processes look continuing running fine.

See current upgrade instuctions on device to Qt 5.2 at:
http://pastebin.ubuntu.com/6808355/

[Timo Jyrinki (timo-jyrinki)]

Adding powerd to the bug. From Saviq 'it's really weird how Qt could influence that, when it's powerd alone that handles all of that stuff by calling ioctls directly'.

rsalveti, could you upgrade to Qt 5.2 and see what's happening over there when the screen blanks? You reportedly (maybe) took over powerd.

[Bill Filler (bfiller)]

note, stopping powerd by running "sudo stop powerd" will prevent the screen from blanking which is useful for testing

[Leo Arias (elopio)]

I couldn't reproduce this issue, on mako, freshly flashed and upgraded as instructed here: https://launchpad.net/~canonical-qt5-edgers/+archive/qt5-beta2.

Can somebody else try to reproduce it?

[Timo Jyrinki (timo-jyrinki)]

I believe this was awesomely fixed with Qt 5.2.1!