SUMMARY Gwenview takes a long time to start on some occasions, notably the first time I start it in a session (or if it has not been started for a long time ?). STEPS TO REPRODUCE 1. Start Gwenview, either through the command line or by double-cliking an image file in Dolphin. OBSERVED RESULT The outline of the Gwenview window is briefely displayed but the inner content is not and it is irresponsive (other programs and the DE are still usable). After ~25 seconds, Gwenview finally functions. EXPECTED RESULT Gwenview should not take such a long time to start. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: KUbuntu 20.04 (available in About System) KDE Plasma Version: 5.18.5 KDE Frameworks Version: KDE Frameworks 5.68.0 Qt Version: Qt 5.12.8 ADDITIONAL INFORMATION I deactivated history and activated the low-resource thumbnail mode (use embedded thumbnails). The problem happens even when starting Gwenview in a working dir that contains no files.
I have the same problem, now every time gewenview takes several seconds to open even if opened without any file (from the system menu). During these seconds only the title bar is rendered, the window content is not updated, it shows the previous background. The CPU is idle, the disk is idle too. I tried to start gwenview with strace and it appears it is waiting for a resources with several timeouts: poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}]) writev(3, [{iov_base="\1\0\10\0\r\0\300\6\226\2\0\0\0\0\0\0\3\0\3\0\0\0\1\0!\0\0\0\0\0\0\0"..., iov_len=100}], 1) = 100 poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}]) writev(3, [{iov_base="\22\0\16\0\r\0\300\6'\0\0\0\37\0\0\0\10ptr\35\0\0\0Qt Clipb"..., iov_len=56}, {iov_base=NULL, iov_len=0}, {iov_base="", iov_len=0}], 3) = 56 poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}]) writev(3, [{iov_base="\2\0\4\0\r\0\300\6\0\10\0\0\0\0@\0\23\0\3\0\r\0\300\6N\1\0\0\30\0\6\0"..., iov_len=56}], 1) = 56 futex(0x7ffd8fdce828, FUTEX_WAIT_PRIVATE, 0, NULL) = 0 futex(0x55669057bdf8, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd0, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29801, tv_nsec=166685105}, FUTEX_BITSET_MATCH_ANY) = 0 futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd4, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29801, tv_nsec=166708345}, FUTEX_BITSET_MATCH_ANY) = 0 futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd0, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29801, tv_nsec=167094124}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connessione scaduta) futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}]) writev(3, [{iov_base="\27\0\2\0G\1\0\0", iov_len=8}], 1) = 8 futex(0x7ffd8fdce858, FUTEX_WAIT_PRIVATE, 0, NULL) = 0 futex(0x55669057bdf8, FUTEX_WAKE_PRIVATE, 1) = 0 poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}]) writev(3, [{iov_base="\23\0\3\0\r\0\300\6N\1\0\0\30\0\6\0\r\0\300\6G\1\0\0I\1\0\0N\1\0\0"..., iov_len=40}], 1) = 40 futex(0x7ffd8fdce7f8, FUTEX_WAIT_PRIVATE, 0, NULL) = 0 futex(0x55669057bdf8, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd0, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29806, tv_nsec=168420203}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connessione scaduta) futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}]) writev(3, [{iov_base="\27\0\2\0G\1\0\0", iov_len=8}], 1) = 8 futex(0x7ffd8fdce8f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Risorsa temporaneamente non disponibile) futex(0x55669057bdf8, FUTEX_WAKE_PRIVATE, 1) = 0 poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}]) writev(3, [{iov_base="\23\0\3\0\r\0\300\6N\1\0\0\30\0\6\0\r\0\300\6G\1\0\0I\1\0\0N\1\0\0"..., iov_len=40}], 1) = 40 futex(0x7ffd8fdce898, FUTEX_WAIT_PRIVATE, 0, NULL) = 0 futex(0x55669057bdf8, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd0, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29811, tv_nsec=171445829}, FUTEX_BITSET_MATCH_ANY) = 0 futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd4, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29811, tv_nsec=171638837}, FUTEX_BITSET_MATCH_ANY) = 0 futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd0, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29811, tv_nsec=172130215}, FUTEX_BITSET_MATCH_ANY) = 0 futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd4, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29811, tv_nsec=172206216}, FUTEX_BITSET_MATCH_ANY) = 0 futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd0, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29811, tv_nsec=171575290}, FUTEX_BITSET_MATCH_ANY) = -1 EAGAIN (Risorsa temporaneamente non disponibile) futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd4, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29811, tv_nsec=172096591}, FUTEX_BITSET_MATCH_ANY) = 0 futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd0, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29811, tv_nsec=171866358}, FUTEX_BITSET_MATCH_ANY) = 0 futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd4, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29811, tv_nsec=171512200}, FUTEX_BITSET_MATCH_ANY) = 0 futex(0x55669058bb80, FUTEX_WAKE_PRIVATE, 1) = 0 futex(0x55669058bbd0, FUTEX_WAIT_BITSET_PRIVATE, 0, {tv_sec=29811, tv_nsec=171466816}, FUTEX_BITSET_MATCH_ANY) = -1 ETIMEDOUT (Connessione scaduta) I tried to delete .config/gwenviewrc without success, I can't find a workaround. On my system gwenview is unusable. I don't know if it is related but I have a dual monitor 1920x1080 with nvidia driver.
My system is Kubuntu 20.04.02
I reinstalled gwenview and now It starts without delay
See Bug 416937 and Bug 411196 In my experience "stuck" dolphin or gwenview could be "unstuck" by opening Klipper and deleting the "entire clipboard history".