Maybe i found another hint: $ ps aux | grep defunct draghi 5416 0.0 0.3 4224 1968 pts/0 S+ 12:08 0:00 grep defunct $ sudo poweroff Failed to start poweroff.target: Connection reset by peer Failed to open initctl FIFO: No such device or address Failed to talk to init daemon. $ sudo poweroff ^C $ ps aux | grep defunct root 10729 0.0 0.0 0 0 pts/0 Z 12:26 0:00 [systemd-tty-ask] <defunct> draghi 10731 0.0 0.3 4224 1972 pts/0 S+ 12:26 0:00 grep defunct $ tail /var/log/syslog [...] Feb 11 12:24:47 Storage-Blue qcontrol[512]: ts41x: temperature 38 Feb 11 12:25:58 Storage-Blue systemd[1]: Caught <SEGV>, dumped core as pid 10726. Feb 11 12:25:58 Storage-Blue systemd[1]: Freezing execution. Feb 11 12:26:34 Storage-Blue dbus[901]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out Feb 11 12:29:48 Storage-Blue qcontrol[512]: ts41x: temperature 35 $ ps aux | grep 10726 draghi 10795 0.0 0.3 4220 1964 pts/0 S+ 12:46 0:00 grep 10726
The only weird thing about the serial port of this QNAP TS-419P II is, that the serial interface is used for both the front panel LCD and buttons as well as the UART console. You can switch the mode with a jumper on the mainboard, which you will have to do to access the u-boot and initram consoles. The panel is controlled by the qcontrol package. At boot time, qcontol takes over the serial port and talks to the panel with its own protocol. Maybe qcontol does some weird things to the serial port that lets systemd-tty-ask crash? All versions of qcontrol are somewhat buggy. I'll try to deinstall qcontrol so it doesn't mess with the serial ports. Maybe that helps. Anyway, systemd-tty-ask should not crash.
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