[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Timo Jyrinki]

@Shawn: http://anonscm.debian.org/cgit/pkg-
kde/qt/qtbase.git/tree/debian/patches?h=ubuntu is currently about Qt
5.5. It has most of the xcb screen related patches backported one way or
another (sometimes a bit tricky) from 5.6, but as mentioned here and
elsewhere on the net also 5.6 users suffer from related problems.

Qt 5.6.1 is planned to be landed to Ubuntu 16.10, but 16.04 LTS and the
bulk of the desktop users will remain on Qt 5.5 so any additional 5.5
patches will be welcome in the future too.

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[SuperRoboWizard]

Affects me as well, particularly during shutdown. When I try to
shutdown, the screen goes completely black except for the Dr.Konqui
windoe in the middle, complaining that ksmserver has segfaulted. If I
try to continue with the report the window closes but the computer never
shuts down, so I have to hold the power button. The same thing happens
if I don't report it. It als segfaults when I unlock the computer after
it goes to sleep, but that isn't as bad because I can restart it from
Tilda.vThis wasn't a problem until recently, after many programs were
updated all at once (I assume qt was in there somewhere). Assuming this
update was supposed to be a fix, it didn't work.

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[xapient]

sorry... the repository is offline by now so i tried this one

deb http://archive.neon.kde.org/dev/unstable xenial main

kde 5.6.99
qt 5.6

status report:

the bug is still here but in a weird way..   plasma starts with one
screen black.. deactivating/activating it in kscreen systemsettings
brings it back to life..

powermanagment sleep  "killed" the other display (black) but panel and 
rightclick remained active..
i could change the wallpaper and revived it by that action..


so it seems the new plasma is not segfaulting anymore but still doesn't know 
how to handle the situation

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[xapient]

i use this repo (kde neon) http://archive.neon.kde.org/tmp/testing
which delivers an up2date plasma 5.6.4 and Qt 5.6 and the bug is still there.. 
sometimes the display configurations is messed up and if i disconnect (sleep or 
power off) one of my screens, plasma is gone :(

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Shawn Rutledge]

Maybe it's a little better, but not there yet.  I have two monitors
attached.  I tried running Creator and Assistant, then running my script
which uses xrandr to remove and re-add the displays.  I tried this first
in a Plasma session.  When the screens came back to life I had only a
black screen (kwin still running), no applications.  Killed X and logged
in again with OpenBox, and ran Creator and Assistant again.  Kerchunk
script, and this time Creator crashed but Assistant survived.  Ran
Creator again, used arandr to disable one monitor.  Ran the script
again, and again Creator crashed while Assistant survived.  Tried again
with the qopenglwindow example; that survives the kerchunk script too.

Maybe if I could have a look at which patches you have cherry-picked on
top of 5.5, could figure out what is still missing.

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Shawn Rutledge]

BTW how soon will Ubuntu upgrade to Qt 5.6?

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Timo Jyrinki]

Upstream has struggled for a long time with these problems, and we have
plenty of backported fixes from Qt 5.6 branch in our 16.04's Qt 5.5.
Sadly they don't fix all issues still.

The next upload is already being prepared and is at
https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-016
if you want to test and report back if there is any change for you. It
has yet another two patches to these issues and some other patches that
are not related.

So you could test it with:
sudo apt-add-repository ppa:ci-train-ppa-service/landing-016
sudo apt update
sudo apt dist-upgrade

And later downgrade back (please do, to remove the PPA from system, the 
contents will change):
sudo apt install ppa-purge
sudo ppa-purge ppa:ci-train-ppa-service/landing-016

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Mike Butash]

I'm currently on 5.5.1+dfsg-16ubuntu7, which should be newer and include
these, no?

I found this digging into why xenial's kde5 plasma shell and all kde
apps keep freaking when my 4k displays go away.  Like others, I use big
4k tv's (3x of them) that give no signal when they power down, so the
displays go away entirely with variable results.

Harassing the kwin guys led me here as deeper qt bugs, but still seems
present as of stated version.

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Timo Jyrinki]

Thanks for testing both of the new versions, at least it does not
regress from the 5.5.1+dfsg14ubuntu2. Potentially the new patch helps in
some situations as it did for Paul who submitted it to 5.6.

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Shawn Rutledge]

likewise with 5.5.1+dfsg-15ubuntu1

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Shawn Rutledge]

Updated to 5.5.1+dfsg-14ubuntu3.  It's not enough to prevent Plasma from
crashing if I disconnect/reconnect both monitors simultaneously with my
script.

#!/bin/sh
restore=`unxrandr`
outputs=`xrandr | grep -i "^\\w" | grep connected | cut -d' ' -f1`
alloff="xrandr"
for o in $outputs
do
alloff="$alloff --output $o --off"
done
echo $alloff
echo $restore
$alloff
sleep 2
$restore

But at least applications tend to survive, and plasma restarts itself.

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Launchpad Bug Tracker]

This bug was fixed in the package qtbase-opensource-src - 5.5.1+dfsg-
14ubuntu3

---
qtbase-opensource-src (5.5.1+dfsg-14ubuntu3) xenial; urgency=medium

  * debian/patches/Xcb-fix-crash-on-screen-power-save.patch:
- Fix additional cases where crash could occur on monitor disconnections
  or power save. (LP: #1551122)
  * Build with C.UTF-8 locale to (LP: #1551145) and re-enable tests (LP: 
#1548686)

 -- Timo Jyrinki   Wed, 02 Mar 2016 10:28:04
+

** Changed in: qtbase-opensource-src (Ubuntu)
   Status: Confirmed => Fix Released

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Launchpad Bug Tracker]

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

** Changed in: qtbase-opensource-src (Ubuntu)
   Status: New => Confirmed

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  Confirmed

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Ryan]

I'm seeing similar behavior to the previous PPA, when the screens are
disconnected the panel fails to resize, and when the screens are
reconnected plasma segfaults. Note that in my configuration, the
internal display is disabled by kscreen to allow both external monitors
to activate.

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  New

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Timo Jyrinki]

Could you test ppa:ci-train-ppa-service/landing-051 (you should get
qtbase packages versioned 5.5.1+dfsg-14ubuntu3~xenial1~test1) and report
back any differences in behavior on your setup?

The list of included patches can be seen at
http://anonscm.debian.org/cgit/pkg-
kde/qt/qtbase.git/tree/debian/patches/series?h=ubuntu - the name of the
patch usually matches the commit message at
http://code.qt.io/cgit/qt/qtbase.git/log/src/plugins/platforms/xcb

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  New

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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[Touch-packages] [Bug 1551122] Re: Crash on screen power save

[Timo Jyrinki]

** Description changed:

  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/
+ 
+ The fix could affect both monitor power saving or attaching/detaching
+ cycles.

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Title:
  Crash on screen power save

Status in qtbase-opensource-src package in Ubuntu:
  New

Bug description:
  Continuation to bug #1548766 to consider another upstream fix from
  https://codereview.qt-project.org/#/c/138681/

  The fix could affect both monitor power saving or attaching/detaching
  cycles.

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