bgra support broken on Mali T760

[Timo Jyrinki]

[Impact]

Black screenshots on certain mobile chipsets.

[Test Case]

Take a screenshot on affected mobile product.

[Regression Potential]

Low, only affects the specified chipsets. Already in use on Ubuntu phone and tablet products.

--

bgra support seems broken also on Mali T760 and should be disabled in qtbase.

The consequence of this bug are black screenshots on some devices.

Upstream merged commit: https://codereview.qt-project.org/#/c/153756/

[Launchpad Janitor (janitor)]

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

[Timo Jyrinki (timo-jyrinki)]

qtbase-opensource-src (5.4.1+dfsg-2ubuntu11~vivid6) vivid; urgency=medium

  * Skip-Mali-T760-OpenGL-ES-3.1-for-pro5.patch:
    - Skip bgra support on Mali T760.

 -- Timo Jyrinki <email address hidden> Fri, 11 Mar 2016 12:40:22 +0000

[Timo Jyrinki (timo-jyrinki)]

I've also submitted this to upstream and it's in 5.6 (https://codereview.qt-project.org/#/c/153756/), and it is both in my 5.5 and 5.6 branches but just not published to Ubuntu archives.

[Launchpad Janitor (janitor)]

This bug was fixed in the package qtbase-opensource-src - 5.5.1+dfsg-16ubuntu10

---------------
qtbase-opensource-src (5.5.1+dfsg-16ubuntu10) yakkety; urgency=medium

  * debian/patches/Blacklist-Mali-T760-Mali-T720-from-supporting-BGRA.patch
    - Backport from upstream 5.6 (LP: #1557915) (LP: #1559906)
  * Add two patches from stable Qt 5.6 branch to fix another case of
    QXcbWindow crashes (LP: #1571158).
    - debian/patches/Fix-crash-because-of-NULL-screen-in-QXcbWindow.patch
    - debian/patches/QtGui-Don-t-set-a-screen-to-a-child-window.patch
  * Fix drag and drop issues with patches from upstream. (LP: #1577313)
    - debian/patches/xcb-Fix-drag-and-drop-to-Emacs.patch
    - debian/patches/xcb-Fix-drag-and-drop-to-applications-like-Emacs-and.patch

 -- Timo Jyrinki <email address hidden> Mon, 02 May 2016 07:46:50 +0000

[Martin Pitt (pitti)]

Hello Timo, or anyone else affected,

Accepted qtbase-opensource-src into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/qtbase-opensource-src/5.5.1+dfsg-16ubuntu7.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Timo Jyrinki (timo-jyrinki)]

This is identical to bug #1559906, even though I only have M10 (T720) and not Pro 5 (T760).

[Launchpad Janitor (janitor)]

This bug was fixed in the package qtbase-opensource-src - 5.5.1+dfsg-16ubuntu7.1

---------------
qtbase-opensource-src (5.5.1+dfsg-16ubuntu7.1) xenial; urgency=medium

  * debian/patches/Blacklist-Mali-T760-Mali-T720-from-supporting-BGRA.patch
    - Backport from upstream 5.6 (LP: #1557915) (LP: #1559906)
  * Add two patches from stable Qt 5.6 branch to fix another case of
    QXcbWindow crashes (LP: #1571158).
    - debian/patches/Fix-crash-because-of-NULL-screen-in-QXcbWindow.patch
    - debian/patches/QtGui-Don-t-set-a-screen-to-a-child-window.patch
  * Fix drag and drop issues with patches from upstream. (LP: #1577313)
    - debian/patches/xcb-Fix-drag-and-drop-to-Emacs.patch
    - debian/patches/xcb-Fix-drag-and-drop-to-applications-like-Emacs-and.patch

 -- Timo Jyrinki <email address hidden> Mon, 02 May 2016 12:24:35 +0000

[Martin Pitt (pitti)]

The verification of the Stable Release Update for qtbase-opensource-src has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.