Created attachment 526160 [details] pcmanfm backtrace after upgrading Qt to 5.9.4, lots of icons are not displayed I've encountered similar problem recently with apps run over ssh, see bug 628846, but now setting QT_QPA_PLATFORMTHEME=lxqt doesn't help and the icons are missing even when logged in locally fooling around with qt5ct, using QT_QPA_PLATFORMTHEME=qt5ct the icons are back so it looks there is some problem with lxqt theme, which seems to be controlled via /usr/lib/qt5/plugins/platformthemes/libqtlxqt.so which belongs to lxqt-qtplugin so I've tried to recompile lxqt-qtplugin to get rid of possible ABI breakage between Qt 5.7 and 5.9 now trying to run apps with QT_QPA_PLATFORMTHEME=lxqt they are segfaulting - what a progress!
hmmm ... looking at the backtrace, I've tried to recompile also dev-libs/libqtxdg then lxqt-base/lxqt-qtplugin again and now it works ... please, can you add some trigger or how is it called in emerge, so that after Qt update these get rebuild automatically?
> hmmm ... looking at the backtrace, I've tried to recompile also > dev-libs/libqtxdg then lxqt-base/lxqt-qtplugin again > > and now it works ... I encountered the same issue after upgraded Qt to 5.9(too small icon, oddly lxqt-panel) I tried kavol's solution like this, then it solved. it was effective to me too: emerge -1av libqtxdg emerge -1av lxqt-qtplugin // and reboot
*** Bug 656416 has been marked as a duplicate of this bug. ***
This method worked for me too, thanks!
Thanks for the report! Closing as we finally have up-to-date ebuilds for 0.13.0 in Portage, and Qt has been moving on as well. I tend to switch between Qt versions quite a bit myself, but haven't noticed issues like this (which, to be fair(?), is not saying much). Feel free to re-open this, if the issue still happens with 0.13.0 or later.
