Sshfs partially freezes the system while connecting.

[wzaburko]

I noticed serious system issues (KDE Desktop) during the initialization of an sshfs connection to an unreachable server. For example, the Dolphin file manager becomes frozen (it cannot be launched or used), and volume control from the keyboard stops working. Only after canceling the connection does everything return to normal, and my earlier keyboard input or Dolphin actions are executed as if they had been queued while frozen. Changing the volume from the desktop works without problems, but the volume level popup appears only after canceling or successfully establishing the connection to the remote server. Even after a successful connection, I noticed a delayed response to volume changes triggered from the keyboard. Additionally, there is no connection timeout — when the server is unreachable, sshfs keeps trying to connect indefinitely.

Operating System: Kubuntu 25.10
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.2
Kernel Version: 6.17.0-8-generic (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 Pro 7535U with Radeon Graphics
Memory: 16 GiB of RAM (14.4 GiB usable)
Graphics Processor: AMD Radeon Graphics
Manufacturer: LENOVO
System Version: ThinkPad L14 Gen 5

[h4sh5]

sshfs also supports any ssh arguments so using -o ConnectTimeout might help:

sshfs -o ConnectTimeout=2 example@example.com: /tmp/remote

this will set connect timeout to 2 seconds and it will error out with 'remote host has disconnected'