qtc cannot find/run gdbserver on remote device.

i have configured remote device (linux x86-64 aka gd09) for running/debugging application.

connection to remote machine works via ssh+keys (qtc-debug-01.png), running application on remote machine via CTRL+R works too.

when i try to debug application (F5) on remote machine qtc reports an error "No executable specified" (qtc-debug-02.png). on the remote machine custom (newer than system-wide) gdbserver is installed and availble on $PATH (qtc-debug-03.png). finally there's a weird info about gdbserver path setting (qtc-debug-04.png).

if i set gdbserver path to /usr/bin/gdbserver then qtc runs server on local machine instead of remote and finally cannot connect.