Created attachment 135694 [details] Screenshot of an open Discovery application SUMMARY After opening Discovery and switching to add-ons, there is no information about add-ons that can be installed or removed. This behavior applies to any add-on group. I have the KDE NEON distribution installed on another laptop as well and there is the same problem too. Sometimes after one update the problem disappears, but after the next update this situation persists. SOFTWARE/OS VERSIONS Operating System: KDE neon 5.20 KDE Plasma Version: 5.20.5 KDE Frameworks Version: 5.78.0 Qt Version: 5.15.2 Kernel Version: 5.4.0-65-generic OS Type: 64-bit Processors: 4 × Intel® Core™ i5-2400 CPU @ 3.10GHz Memory: 15.6 GiB of RAM Graphics Processor: GeForce GTX 1050 Ti/PCIe/SSE2 ADDITIONAL INFORMATION
A possibly relevant merge request was started @ https://invent.kde.org/plasma/discover/-/merge_requests/169
Git commit c0e9cb9376ca5348a214458532a0611832f12f71 by Aleix Pol Gonzalez, on behalf of Aleix Pol. Committed on 30/09/2021 at 11:02. Pushed by apol into branch 'master'. kns: Centralise the backend query state handling We put it all into ::setResponsePending which is the function that we call to tell we are embarking on a new query. This allows us to make sure the signals to wrap up the previous state can be emitted as well as notifying about the new state accordingly. This also allows us to assert when the state isn't as expected, which allowed to address some issues already as it's done in this change. Hence, this fixes: - issuing 2 searches before the backend has initialised will result in an infinite job as both queries would be waiting forever for the backend to initialise. - issuing 2 searches where the first is pageable would leave the second idling forever even though it's the one we care about. - checking for updates didn't check whether we are already querying, we could get 2 tasks weirdly overlapping - fetchMore wouldn't notify about starting to fetch - fetchEntryById isn't paged - findResourceByPackageName wouldn't reset the m_responsePending value Related: bug 436373 M +69 -37 libdiscover/backends/KNSBackend/KNSBackend.cpp M +2 -0 libdiscover/backends/KNSBackend/KNSBackend.h https://invent.kde.org/plasma/discover/commit/c0e9cb9376ca5348a214458532a0611832f12f71