** Description changed: - KDE Plasma is affected by a Qt bug that causes image slideshows to leak - memory, eventually exhausting all available memory and crashing the - system: https://bugs.kde.org/show_bug.cgi?id=368838 + [Impact] - This principally affects people who use the popular slideshow wallpaper - feature. Thankfully, there's a Qt patch to fix it the issue: - https://codereview.qt-project.org/#/c/224684/ + * Due to a Qt bug, using an image slideshow for the wallpaper causes a memory leak that eventually causes the system to freeze. The severity of the leak is proportional to the speed with which images are changed in the slideshow. + * Given the popularity of the image slideshow wallpaper feature, this is a high-profile, easily reproducible issue. + * See https://bugs.kde.org/show_bug.cgi?id=368838 and https://codereview.qt-project.org/#/c/224684/ - It's slated to go into Qt 5.11. We should strongly consider cherry- - picking it into 5.9.x to get this important fix into our users' hands as - soon as possible. + * An attempt was made to backport the fix prior to Bionic's release, + but this was overlooked or unsuccessful (see the history here). As a + result, it now needs to be done as an SRU. + + [Test Case] + + * Use KDE Plasma + * Right-click on the desktop and choose "Configure Desktop" + * Change the wallpaper type to "Slideshow" and choose a folder full of images + * Click Apply + * Wait a few days; Plasma will eventually totally freeze + + [Regression Potential] + + * Regressions are unlikely given that the specific backport patch has + been well-tested by many in https://bugs.kde.org/show_bug.cgi?id=368838, + and the actual code fix in Qt was released to users in Qt 5.11 months + ago.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtdeclarative-opensource- src in Ubuntu. https://bugs.launchpad.net/bugs/1761016 Title: cherry-pick https://codereview.qt-project.org/#/c/224684/ to fix image slideshows in KDE Plasma Status in qtdeclarative-opensource-src package in Ubuntu: Fix Released Status in qtdeclarative-opensource-src source package in Bionic: New Bug description: [Impact] * Due to a Qt bug, using an image slideshow for the wallpaper causes a memory leak that eventually causes the system to freeze. The severity of the leak is proportional to the speed with which images are changed in the slideshow. * Given the popularity of the image slideshow wallpaper feature, this is a high-profile, easily reproducible issue. * See https://bugs.kde.org/show_bug.cgi?id=368838 and https://codereview.qt-project.org/#/c/224684/ * An attempt was made to backport the fix prior to Bionic's release, but this was overlooked or unsuccessful (see the history here). As a result, it now needs to be done as an SRU. [Test Case] * Use KDE Plasma * Right-click on the desktop and choose "Configure Desktop" * Change the wallpaper type to "Slideshow" and choose a folder full of images * Click Apply * Wait a few days; Plasma will eventually totally freeze [Regression Potential] * Regressions are unlikely given that the specific backport patch has been well-tested by many in https://bugs.kde.org/show_bug.cgi?id=368838, and the actual code fix in Qt was released to users in Qt 5.11 months ago. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtdeclarative-opensource-src/+bug/1761016/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
