** Summary changed:
-
/usr/bin/unity8:11:Screen::makeCurrent:ScreenWindow::makeCurrent:MirOpenGLContext::makeCurrent:QOpenGLContext::makeCurrent:QSGRenderThread::run
+ Unity8 crashes with SIGSEGV in Screen::makeCurrent
(./src/platforms/mirserver/screen.cpp:406)
** Also affects: unity8 (Ubuntu)
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: unity8 (Ubuntu)
Status: New => Confirmed
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: qtmir (Ubuntu)
Status: New => Confirmed
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Bug #1654581 was duped to this one, but I will say that the crash has
become much more prevalent, like nearly 100% reproducible after the last
qtmir release.
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ht
This is the easiest way to reproduce for me:
- Unity 8 desktop session, either X+O or Zesty
- Create a Libertine container and install an app in it such as Firefox.
- Start the X app.
- Wait ~30 minutes, ie, leave the system alone.
Xmir seems to exacerbate the issue, but I have observed the crash
Some more data points...
I disabled the screen blanking, but that made no difference.
But with the screen not blanked, I started an X app through Xmir and
left U8 idle and observed at almost exactly 10 minutes of idle time, U8
crashed. This is what was in unity8.log at the time of the crash:
[2
I'm failing to reproduce this unfortunately. I'm also failing to create
a libertine container. It was failing due to bug 1653973, so I installed
silo 2341, but now it fails with:
Failed to download http://images.linuxcontainers.org//meta/1.0/index-user
LxcContainer.py:254: ERROR: create_libertine_
You might find it useful to look through stack traces from other users:
https://errors.ubuntu.com/problem/6cee045a96ab5c9a03847aeb290f4860eea1034d
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Yeah I figured it out. Non rootless (rooted!) XMir wants to decide the
display power state (DPMS). Unity8/QtMir never had to deal with clients
doing that before.
Longer term Unity8 should filter such requests as it's quite rude for an
app to be able to turn off your display on you, but I've a bran
Yeah, sorry I was meaning to tell you but never caught you on IRC... I
noticed Xmir does modify the display config, but only to implement DPMS.
That's legacy code from the days when Xmir was full screen. Although
full screen mode is also the default mode. So I'm wondering if we need
to make the beh
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