See: https://askubuntu.com/questions/1442510/system-hangs-breaks-when- fstrim-runs-dual-boot-on-ssd-setup for more details about my system where this bug occurs.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1823721 Title: systemctl fstrim.timer freeze computer with a SSD on a dual boot system Windows 10/Ubuntu 18.04 Status in systemd package in Ubuntu: Confirmed Bug description: The default systemctl fstrim.timer on Ubuntu 18.04 entirely freeze the computer once a week (usually on Monday midnight) in the case of a dual boot system installed on a SSD (Windows/Ubuntu) due to high IO overhead. I also had several freeze at boot due to the same problem. When the freeze occur I can open a tty terminal and type the command iotop to see the process which use that amount of IO. It was mount.ntfs-3g which point to my mount point to my Windows 10 install on my SSD. When the freeze occur the system is not responsive for about 10-15 minutes. I solved my issue by disabling the fstrim.timer entirely with this command: sudo systemctl disable fstrim.timer I can reproduce the problem on my installation by launching the fstrim-timer: sudo systemctl start fstrim.timer Imediately after launching fstrim.timer, iotop display this line at top, with my Windows 10 mount point: TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND 893 be/4 root 0.00 B/s 0.00 B/s 0.00 % 99.10 % mount.ntfs-3g /dev/sda1 /media/systeme_windows -o rw,noatime,noexec,nosuid,nodev,gid=100,uid=1000,nls=utf8,windows_names,umask=002,user And a few minutes later: TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND 20077 be/4 root 0.00 B/s 0.00 B/s 0.00 % 99.45 % fstrim -av ---- Systemd 237-3ubuntu10.19 Ubuntu 18.04.2 Linux 4.18.0-17-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1823721/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
