After half an hour I issued the command, the machine has not hibernated. This has happened before. <3.4> 2019-07-08 04:24:05 Telcontar systemd-sh - - - Hibernating the system now... <3.4> 2019-07-08 04:25:35 Telcontar systemd-sleep 7476 - - system-sleep terminated by signal ALRM. <3.3> 2019-07-08 04:25:35 Telcontar systemd-sleep 7476 - - Execution failed: Protocol error The disk light is continously on. iotop says: Total DISK READ : 22.35 K/s | Total DISK WRITE : 16.47 K/s Actual DISK READ: 22.35 K/s | Actual DISK WRITE: 203.49 K/s TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND 7430 be/4 root 17.64 K/s 16.47 K/s 0.00 % 99.99 % [kworker/u8:0] <======== 1296 be/3 root 0.00 B/s 0.00 B/s 0.00 % 2.46 % [jbd2/sdc5-8] 6922 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.09 % [kworker/0:2] 5365 be/4 cer 4.71 K/s 0.00 B/s 0.06 % 0.00 % xfce4-terminal --g~ectory /home/cer - Nothing evident from top: op - 05:29:47 up 2 days, 6:08, 2 users, load average: 3,94, 3,86, 3,77 Tasks: 463 total, 2 running, 455 sleeping, 0 stopped, 6 zombie %Cpu(s): 7,2 us, 1,2 sy, 0,0 ni, 67,9 id, 23,6 wa, 0,0 hi, 0,0 si, 0,0 st KiB Mem : 8161124 total, 1919492 free, 1927396 used, 4314236 buff/cache KiB Swap: 25165820 total, 21712136 free, 3453684 used. 5801376 avail Mem PID USER PR NI VIRT RES SHR SWAP S %CPU %MEM TIME+ COMMAND 6333 cer 20 0 4376336 855144 75136 773876 R 27,08 10,48 87:36.80 thunderbird-bin 2796 root 20 0 53204 8432 2108 4080 S 1,786 0,103 17:01.39 iotop 4083 root 20 0 554344 139652 59704 30528 S 0,893 1,711 33:02.71 X 2783 cer 20 0 40596 1548 524 256 R 0,595 0,019 4:57.50 top 279 root 0 -20 0 0 0 0 S 0,298 0,000 0:14.72 kworker/0:1H 5317 cer 20 0 469864 22472 7896 13052 S 0,298 0,275 4:37.97 xfce4-panel 5365 cer 20 0 770604 36256 9740 37420 S 0,298 0,444 2:28.09 xfce4-terminal 7430 root 20 0 0 0 0 0 D 0,298 0,000 0:10.27 kworker/u8:0 1 root 20 0 225652 6192 2820 2216 S 0,000 0,076 0:34.01 systemd 2 root 20 0 0 0 0 0 S 0,000 0,000 0:00.05 kthreadd 4 root 0 -20 0 0 0 0 S 0,000 0,000 0:00.00 kworker/0:0H 6 root 0 -20 0 0 0 0 S 0,000 0,000 0:00.00 mm_percpu_wq 7 root 20 0 0 0 0 0 S 0,000 0,000 0:03.10 ksoftirqd/0 8 root 20 0 0 0 0 0 S 0,000 0,000 0:21.07 rcu_sched 9 root 20 0 0 0 0 0 S 0,000 0,000 0:00.00 rcu_bh 10 root rt 0 0 0 0 0 S 0,000 0,000 0:00.09 migration/0 11 root rt 0 0 0 0 0 S 0,000 0,000 0:00.11 watchdog/0 I will have to issue poweroff, and I know it will also fail and I will have to hit the button forcibly. This time, I may try to kill something. PID 7430, perhaps. But I'll mail this first. -- Cheers / Saludos, Carlos E. R. (from 15.0 x86_64 at Telcontar)