https://bugs.kde.org/show_bug.cgi?id=413615

--- Comment #6 from Mircea Kitsune <sonichedgehog_hyperblas...@yahoo.com> ---
I just discovered another important clue related to this issue. It's not just
the sensors that are freezing: Other processes are too. I've been noticing this
since I switched motherboards, but was convinced it was an entirely unrelated
problem. I just now spotted that new applications will not start up while the
sensors are frozen, but will start the moment they unfreeze.

Some practical examples: If I open a new tab in Firefox which requires opening
a new Web process, Firefox will freeze during the 5 second period that sensors
don't update. Or if I write "sudo zypper dup" in the console to do an update,
my cursor moves to the next line when pressing enter, but nothing happens if
the sensors are frozen at that time... the line asking me to input my password
appears the moment they unfreeze. It also appears I can't close certain
applications during a freeze: If I try closing Dolphin in such a moment, the
window becomes gray and I'm asked if I want to terminate the unresponsive
process... however it disappears and Dolphin closes normally at unfreeze.

So it seems something is blocking both the hardware sensors and some processes
starting up or shutting down, though it seems not to affect processes that are
already running. What could cause such strange behavior? Traditionally those
things used to happen due to the disk I/O scheduler causing processes to go
into disk sleep mode, but nothing seems to be using the hard drive while the
problem occurs nor does KSysGuard show affected processes as being in "disk
sleep". I already disabled SWAP with "swapoff -a" and it's not related to it.

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