Without this, if a configuration is, say, available only on GLES2/3, but
not on GLES1, and is rejected by the dri module's bindContext call,
eglMakeCurrent fails with error "EGL_SUCCESS".
In this patch, we set error to EGL_BAD_MATCH, which is what CTS/dEQP
dEQP-EGL.functional.s
Probably caused by
commit de695014eb6c819b050a4f7f2f952c4466047292
Author: Nicolas Boichat
Date: Fri Jul 15 16:24:20 2016 +0800
egl/dri2: dri2_make_current: Set EGL error if bindContext fails
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On 13/09/2016 08:49, Gerry Boland wrote:
> Could someone with a problematic system log into Unity7, and for a simple qml
> file, run:
> QT_XCB_GL_INTEGRATION=xcb_egl qmlscene ~/test.qml
> and see does it fail?
It works fine.
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Note it is only Unity8 which is mixing GL and GLES calls, clients are
not doing that. Qt clients are only doing GL calls on desktop.
Nothing obvious comes to mind here.
It may be Qt's EGL configuration code is failing - code that QtUbuntu is
using. Another consumer of that same code is the EGL ba
Maybe... Mesa only just started to care about mixing and matching GL
with GLES in invalid ways. I know we have done it in the past and
possibly still do. Maybe today is the day Mesa finally started checking
the validity of our GL calls...?
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Enabling debugging I can't see anything EGL-related failing before the
errors start in unity8-dash.log. Although rendering appears to fail:
[2016-09-13:12:45:18.825] ubuntumirclient: Created surface with geometry: QRect(
0,24 510x712) title: "Scopes" role: 1
[2016-09-13:12:45:18.825] ubuntumirclie
CONFIRMED. Downgrading Mesa to 12.0.1 fixes the problem:
https://launchpad.net/ubuntu/+source/mesa/12.0.1-3ubuntu2/+build/10506751
So the regression was triggered by:
https://launchpad.net/ubuntu/+source/mesa/12.0.2-1ubuntu1
However that doesn't mean Mesa is buggy necessarily. Our Qt EGL setup
co
** Changed in: canonical-devices-system-image
Milestone: None => 13
** Changed in: canonical-devices-system-image
Importance: Undecided => Critical
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Another prime candidate that possibly triggered this bug:
https://launchpad.net/ubuntu/+source/mesa/12.0.2-1ubuntu1
Released on 7 September (which would have been 8 Sept here).
It could easily be that our Qt apps are (and always have been)
requesting some EGL attributes that Mesa can not or sho
And the app never rendered because its call to eglMakeCurrent failed
with error 3001 (EGL_NOT_INITIALIZED).
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https://bugs.launchpad.net/bugs/1620934
Title:
Qt/QML apps don't render any
@larryprice the black Scopes and blank Settings are splash screens,
basically means the app never rendered.
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Title:
Qt/QML apps don't render any
The System Settings log could actually contain some interesting
information. It seems to imply that the launcher is out of memory.
** Attachment added: "System Settings log"
https://bugs.launchpad.net/qtmir/+bug/1620934/+attachment/4739455/+files/application-legacy-ubuntu-system-settings-.log
In my case, the Dash shows up as just a black screen with the Dash icon
and "Scopes" and never finishes loading. When opening up System
Settings, it sits on a white screen with just the titlebar. When opening
up the web browser, I got a crash and a weird update notifier log
(attached) in addition t
qtbase-opensource-src did get a new release on september 3rd. But xenial
stable-phone-overlay and yakkety seem to be carrying the very same qt
version, so scrap my theory from comment #30...
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Maybe the culprit is different Qt versions between xenial and yakkety?
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Title:
Qt/QML apps don't render any more (logs say "QEGLPlatformContext:
This only happens in yakkety. The same qtmir, qtubuntu and unity8 runs
fine in xenial. Lost a couple of hours on this issue yesterday and my
"solution" was to reboot my test laptop into a xenial partition so I
could unblock myself.
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What we need is someone with a slightly out of date yakkety that doesn't
have the bug. Then upgrade it, check the regression now occurs and work
from that.
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Yeah it could have happened a day or two ago. Probably been a couple of
days since I tested Unity8 apps.
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Title:
Qt/QML apps don't render any mor
The only relevant piece there seems to be qtmir, but looking at its
changelog [1] there's no related changes there...
[1]
https://launchpad.net/ubuntu/+source/qtmir/0.4.8+16.10.20160831-0ubuntu1
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Although it could also have happened a day or two ago in a different
upgrade. I might not have noticed.
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Title:
Qt/QML apps don't render any more
The regression appears to have happened for me in this upgrade:
Start-Date: 2016-09-09 09:40:23
Commandline: apt full-upgrade
Requested-By: dan (1000)
Upgrade: ubuntu-settings:amd64 (16.10.2, 16.10.3), suru-icon-theme:amd64
(16.10+16.10.20160829.3-0ubuntu1, 16.10+16.10.20160908-0ubuntu1),
libau
@dinamic, can you please look at /var/log/apt/history.log and try to
estimate which upgrade broke it?
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Title:
Qt/QML apps don't render any more (
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