Could not load network backend on embedded Linux system
-
@SGaist said in Could not load network backend on embedded Linux system:
Did you check with ldd whether all the plugins dependencies are present ?
Here is the output of
ldd /usr/lib/plugins/networkmanager/libqnetworkmanager.so
Looks like all dependencies are present.Let me know if you need other information.
How did you install Qt on the target ?
-
Hi all
I found the the network backend could not be loaded on embedded Linux system. But the library file could be found.
BTW, it could be loaded on Windows and desktop Linux (Ubuntu).
Embedded system information as follow:
Yocto Linux 5.15, with Qt 6.4.2Let me know if you want to get more details.
Best regards
wrote on 31 Aug 2023, 19:15 last edited by@Shen-sida run
strace your_app
to check what is missing or wrong? -
@Shen-sida run
strace your_app
to check what is missing or wrong? -
wrote on 1 Sept 2023, 18:31 last edited by
@Shen-sida
redirect output to a file:
strace -o log.txt your app -
@Shen-sida
redirect output to a file:
strace -o log.txt your app -
What issue did you have ?
-
wrote on 6 Sept 2023, 18:58 last edited by JoeCFD 9 Jun 2023, 19:00
@Shen-sida you can show only the part here which displays loading failure. You can find out in the file which dependency lib is unable to be loaded.
-
@Shen-sida you can show only the part here which displays loading failure. You can find out in the file which dependency lib is unable to be loaded.
wrote on 7 Sept 2023, 05:29 last edited by@JoeCFD If about network, here is the information:
openat(AT_FDCWD, "/usr/lib/libQt6Network.so.6", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3 read(3, "\177ELF\1\1\1\3\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\0\0\0\0004\0\0\0"..., 512) = 512 statx(3, "", AT_STATX_SYNC_AS_STAT|AT_NO_AUTOMOUNT|AT_EMPTY_PATH, STATX_BASIC_STATS, {stx_mask=STATX_BASIC_STATS|STATX_MNT_ID, stx_attributes=0, stx_mode=S_IFREG|0755, stx_size=1178928, ...}) = 0 mmap2(NULL, 1309948, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x76780000 mmap2(0x76780000, 1244412, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0x76780000 munmap(0x768b0000, 64764) = 0 mprotect(0x76899000, 61440, PROT_NONE) = 0 mmap2(0x768a8000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x118000) = 0x768a8000 close(3) = 0 -
@JoeCFD If about network, here is the information:
openat(AT_FDCWD, "/usr/lib/libQt6Network.so.6", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3 read(3, "\177ELF\1\1\1\3\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\0\0\0\0004\0\0\0"..., 512) = 512 statx(3, "", AT_STATX_SYNC_AS_STAT|AT_NO_AUTOMOUNT|AT_EMPTY_PATH, STATX_BASIC_STATS, {stx_mask=STATX_BASIC_STATS|STATX_MNT_ID, stx_attributes=0, stx_mode=S_IFREG|0755, stx_size=1178928, ...}) = 0 mmap2(NULL, 1309948, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x76780000 mmap2(0x76780000, 1244412, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0x76780000 munmap(0x768b0000, 64764) = 0 mprotect(0x76899000, 61440, PROT_NONE) = 0 mmap2(0x768a8000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x118000) = 0x768a8000 close(3) = 0wrote on 7 Sept 2023, 13:50 last edited by JoeCFD 9 Jul 2023, 13:56@Shen-sida there is no message to tell loading fails. In your first post, loading libqnetworkmanager failed. Here you showed message for a different lib. You are looking at the wrong spot. Have you ever installed another version of Qt6? If you can use synaptic, open it to check all Qt libs(plus plugins) have the same versions. You can click the property of any lib to find out where they are located.
-
S Shen sida marked this topic as a regular topic on 6 May 2024, 09:26
13/14