[SRU] Unable download from store.kde.org with error "invalid number of concurrent streams"

[Rik Mills]

Version: 5.15.3+dfsg-2
Release: Jammy 22.04

In KDE systemsettings or Discover, trying to download new plasma themes or similar assets from store.kde.org results in an error dialogue stating "invalid number of concurrent streams".

KDE Bug: https://bugs.kde.org/show_bug.cgi?id=455540

Fixed in KDE Qt patch collection with: https://invent.kde.org/qt/qt/qtbase/-/commit/ec68c541a72bde122a1ab5ba89f41b58c370537f

Fixed in Kinetic with: https://launchpad.net/ubuntu/+source/qtbase-opensource-src/5.15.4+dfsg-3ubuntu1

Also fixed in Debian experimental as part on the planned Qt 5.15.5 transition: https://metadata.ftp-master.debian.org/changelogs//main/q/qtbase-opensource-src/qtbase-opensource-src_5.15.5+dfsg-2_changelog

The update has also been shipped to our updates and backports PPA, and confirmed to be working by users.

[Impact]

 * Users are unable to download new assets from store.kde.org. This is an important feature for users to be able to easily and safely customise their systems.

[Test Plan]

 * Confirm that you can reproduce the bug with the unpatched Qtbase in the main archive.
 * Apply the update and test.
 * Confirm that assets now download without error.
 * Check a selection of other Qt based applications that access the internet to confirm as mush as is practical that there are not adverse consequences to the update.

[Where problems could occur]

 * We are changing somewhat how Qt responds to these http requests, so some testing of other Qt based applications is desirable.

[Steve Langasek (vorlon)]

Hello Rik, or anyone else affected,

Accepted qtbase-opensource-src into jammy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/qtbase-opensource-src/5.15.3+dfsg-2ubuntu0.1 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 on 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, what testing has been performed on the package and change the tag from verification-needed-jammy to verification-done-jammy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-jammy. In either case, without details of your testing we will not be able to proceed.

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

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Rik Mills (rikmills)]

In testing on hardware and VM, this fixes the issue for me. No adverse impact observed.

[Launchpad Janitor (janitor)]

This bug was fixed in the package qtbase-opensource-src - 5.15.3+dfsg-2ubuntu0.1

---------------
qtbase-opensource-src (5.15.3+dfsg-2ubuntu0.1) jammy; urgency=medium

  * Backport upstream patch to remove limit on the number of HTTP/2 streams.
    Fixes https://bugs.kde.org/455540. (LP: #1980210)

 -- Rik Mills <email address hidden> Sat, 18 Jun 2022 14:22:24 +0100

[Brian Murray (brian-murray)]

The verification of the Stable Release Update for qtbase-opensource-src has completed successfully and the package is now being 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.