Disturbing random kscreenlocker fail

[HotelBellaMuerte]

trouble: sometimes kscreenlocker hangs and i cant put my password, i can move my mouse, but it doent make ANYTHING (change user its impossible, click unlock button its impossible)

FORCED and evil solution, restart from power button (tower)

system state: IDLE (just chromium + a wget download, no more)

manjaro spin: xfce (after i've downloaded KDE)

software
linux415 4.15.r180121.gd517bb7

xf86-video-amdgpu 1.4.0-1

kscreenlocker 5.11.5-1

glibc 2.26-10

gcc 7.2.1+20171224-2

mesa 17.3.2-2

hardware

cpu fx 8350 - 4GHz

gpu rx 560

hdd toshiba 1tb

extras

ram its fine (no hangs building chromium/rendering)

cpu its fine

psu offers safe volts (97-103%)

boot time its normal

no new bizarre codes ad dmesg

[philmmanjaro]

So, do you use the KDE desktop or XFCE? If the later, why not use the screen locker designed for XFCE instead?

[HotelBellaMuerte]

@philmmanjaro

i've downloaded xfce iso

after installed KDE

[jonathonf]

If this issue is random it's going to be very difficult, if not impossible, to replicate and diagnose.

Please come up with some reliable replication steps, and also check whether this is a known issue with kscreenlocker itself.