https://bugs.kde.org/show_bug.cgi?id=496325
Bug ID: 496325
Summary: Krusader (seems to be) freeze about several seconds at
start, or when open directories, or when changing
tabs, ... after upgrading to KDE 6
Classification: Applications
Product: krusader
Version: Git
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: krusader-bugs-n...@kde.org
Reporter: linn...@gmail.com
CC: krusader-bugs-n...@kde.org
Target Milestone: ---
SUMMARY
* It happens with both stable 2.8.1 and git version of krusader
* It does not occur with krusader under kde plasma 5.x
DESCRIPTION:
It occurs randomly, but it has been happening more frequently recently. And it
may be related to USB or bluetooth devices.
In my case, it's precisely my bluetooth keyboard that is the problem. If I
disable keyboard and re-connect it, the problem is disappear for awhile.
When I run krusader with `strace`, it freezes at, when the output of `strace`
shows:
At start:
```
getrandom("\x5a\x36\x16\x00\x61\x61\x74\x9e\xa9\xf1\xea\xef\x28\x7a\xf9\x4b",
16, GRND_INSECURE) = 16
readlinkat(AT_FDCWD,
"/sys/devices/virtual/misc/uhid/0005:0A5C:8502.0007/power_supply/hid-01:00:01:41:5d:88-battery/subsystem",
"../../../../../../../class/power"..., 4096) = 39
openat(AT_FDCWD,
"/sys/devices/virtual/misc/uhid/0005:0A5C:8502.0007/power_supply/hid-01:00:01:41:5d:88-battery/uevent",
O_RDONLY|O_NOCTTY|O_CLOEXEC) = 33
fstat(33, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0
read(33,
```
And when changing tabs, or browsing (some directories):
```
getrandom("\x43\xb8\x67\xe7\xf5\x00\xe5\x37\xc6\xd8\xc3\x9c\x8e\xdd\x5a\xa3",
16, GRND_INSECURE) = 16
newfstatat(AT_FDCWD,
"/sys/devices/virtual/misc/uhid/0005:0A5C:8502.0007/input/input29/input29::scrolllock/MAJOR",
0x7ffdef605740, AT_SYMLINK_NOFOLLOW) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD,
"/sys/devices/virtual/misc/uhid/0005:0A5C:8502.0007/power_supply/hid-01:00:01:41:5d:88-battery/uevent",
O_RDONLY|O_NOCTTY|O_CLOEXEC) = 50
fstat(50, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0
read(50,
```
SOFTWARE/OS VERSIONS
Windows:
macOS:
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma:
KDE Plasma Version: 6.2.3
KDE Frameworks Version:
Qt Version: 6.8.0
ADDITIONAL INFORMATION
Here is discussion about this problem on KDE's forum:
https://discuss.kde.org/t/krusader-is-most-of-the-time-unresponsive-on-plasma-6/15050/
https://discuss.kde.org/t/krusader-is-slow-when-starting-or-changing-tabs/18257/
And someone has problem with Dolphin too, although I don't have problem with
Dolphin (I don't use it much)
https://forums.fedoraforum.org/showthread.php?332926-Dolphin-freezes-a-few-seconds-when-opening
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