The problem still persists. I found two solutions: 1) When "yast2 online_update" was called from command line, press ^Z to suspend Yast. Then press the eject button to eject the medium (that won't work when yast is running). The the process continues. 2) Use the "eject" command to eject the medium. It will take a little time, but eventually the medium will eject and the update process continues. Still I'd like to have a better solution. Here is the process list (ps ax) when things were hanging: i7g4x4a:/home/windl # ps ax PID TTY STAT TIME COMMAND 1 ? Ss 0:04 /usr/lib/systemd/systemd --system --deserialize 63 2 ? S 0:00 [kthreadd] 3 ? I< 0:00 [rcu_gp] 4 ? I< 0:00 [rcu_par_gp] 6 ? I< 0:00 [kworker/0:0H-kblockd] 7 ? I 0:00 [kworker/0:1-events] 8 ? I 0:00 [kworker/u16:0-kcryptd/254:0] 9 ? I< 0:00 [mm_percpu_wq] 10 ? S 0:00 [ksoftirqd/0] 11 ? I 0:00 [rcu_preempt] 12 ? S 0:00 [migration/0] 13 ? S 0:00 [idle_inject/0] 14 ? S 0:00 [cpuhp/0] 15 ? S 0:00 [cpuhp/1] 16 ? S 0:00 [idle_inject/1] 17 ? S 0:00 [migration/1] 18 ? S 0:00 [ksoftirqd/1] 20 ? I< 0:00 [kworker/1:0H-kblockd] 21 ? S 0:00 [cpuhp/2] 22 ? S 0:00 [idle_inject/2] 23 ? S 0:00 [migration/2] 24 ? S 0:00 [ksoftirqd/2] 26 ? I< 0:00 [kworker/2:0H-kblockd] 27 ? S 0:00 [cpuhp/3] 28 ? S 0:00 [idle_inject/3] 29 ? S 0:00 [migration/3] 30 ? S 0:00 [ksoftirqd/3] 32 ? I< 0:00 [kworker/3:0H-kblockd] 33 ? S 0:00 [cpuhp/4] 34 ? S 0:00 [idle_inject/4] 35 ? S 0:00 [migration/4] 36 ? S 0:00 [ksoftirqd/4] 38 ? I< 0:00 [kworker/4:0H-kblockd] 39 ? S 0:00 [cpuhp/5] 40 ? S 0:00 [idle_inject/5] 41 ? S 0:00 [migration/5] 42 ? S 0:00 [ksoftirqd/5] 43 ? I 0:00 [kworker/5:0-mm_percpu_wq] 44 ? I< 0:00 [kworker/5:0H-kblockd] 45 ? S 0:00 [cpuhp/6] 46 ? S 0:00 [idle_inject/6] 47 ? S 0:00 [migration/6] 48 ? S 0:00 [ksoftirqd/6] 50 ? I< 0:00 [kworker/6:0H-kblockd] 51 ? S 0:00 [cpuhp/7] 52 ? S 0:00 [idle_inject/7] 53 ? S 0:00 [migration/7] 54 ? S 0:00 [ksoftirqd/7] 56 ? I< 0:00 [kworker/7:0H-kblockd] 58 ? S 0:00 [kdevtmpfs] 59 ? I< 0:00 [netns] 60 ? S 0:00 [rcu_tasks_kthre] 61 ? S 0:00 [kauditd] 62 ? S 0:00 [khungtaskd] 63 ? S 0:00 [oom_reaper] 64 ? I< 0:00 [writeback] 65 ? S 0:00 [kcompactd0] 66 ? SN 0:00 [ksmd] 67 ? SN 0:00 [khugepaged] 113 ? I< 0:00 [kintegrityd] 114 ? I< 0:00 [kblockd] 115 ? I< 0:00 [blkcg_punt_bio] 116 ? I< 0:00 [tpm_dev_wq] 117 ? I< 0:00 [ata_sff] 118 ? I< 0:00 [edac-poller] 119 ? I< 0:00 [devfreq_wq] 120 ? S 0:00 [watchdogd] 121 ? I 0:00 [kworker/4:1-events_power_efficient] 124 ? I 0:00 [kworker/7:1-events_power_efficient] 125 ? I 0:00 [kworker/2:1-mm_percpu_wq] 127 ? S 0:00 [kswapd0] 128 ? I< 0:00 [kworker/u17:0] 130 ? I< 0:00 [kthrotld] 131 ? S 0:00 [irq/25-PCIe BW ] 132 ? S 0:00 [irq/26-PCIe BW ] 133 ? S 0:00 [irq/27-PCIe BW ] 134 ? S 0:00 [irq/28-PCIe BW ] 135 ? S 0:00 [scsi_eh_0] 136 ? I< 0:00 [scsi_tmf_0] 137 ? S 0:00 [scsi_eh_1] 138 ? I< 0:00 [scsi_tmf_1] 139 ? S 0:00 [scsi_eh_2] 140 ? I< 0:00 [scsi_tmf_2] 141 ? S 0:00 [scsi_eh_3] 142 ? I< 0:00 [scsi_tmf_3] 143 ? S 0:00 [scsi_eh_4] 144 ? I< 0:00 [scsi_tmf_4] 145 ? S 0:00 [scsi_eh_5] 146 ? I< 0:00 [scsi_tmf_5] 147 ? I 0:01 [kworker/u16:1-events_unbound] 148 ? I 0:00 [kworker/u16:2-kcryptd/254:0] 150 ? I 0:01 [kworker/u16:4-kcryptd/254:0] 151 ? I 0:00 [kworker/u16:5-kcryptd/254:0] 154 ? I< 0:00 [ipv6_addrconf] 155 ? I 0:00 [kworker/u16:7-kcryptd/254:0] 164 ? I< 0:00 [kstrp] 177 ? I< 0:00 [charger_manager] 178 ? I< 0:00 [kworker/2:1H-kblockd] 179 ? I< 0:00 [kworker/1:1H-kblockd] 180 ? I< 0:00 [kworker/6:1H-kblockd] 181 ? I< 0:00 [kworker/7:1H-kblockd] 182 ? I< 0:00 [kworker/5:1H-kblockd] 223 ? I< 0:00 [kaluad] 224 ? I 0:00 [kworker/6:2-events] 225 ? I< 0:00 [kmpath_rdacd] 226 ? I< 0:00 [kmpathd] 227 ? I< 0:00 [kmpath_handlerd] 481 ? I 0:00 [kworker/3:2-events] 505 ? I< 0:00 [firewire] 508 ? I< 0:00 [firewire_ohci] 520 ? I< 0:00 [cryptd] 554 ? I 0:00 [kworker/1:2-mm_percpu_wq] 595 ? I< 0:00 [kworker/3:1H-kblockd] 596 ? I< 0:00 [md] 612 ? I< 0:00 [kworker/0:1H-kblockd] 632 ? S 0:00 [md126_raid1] 664 ? I< 0:00 [ttm_swap] 665 ? S 0:00 [gfx] 666 ? S 0:00 [comp_1.0.0] 667 ? S 0:00 [comp_1.0.1] 668 ? S 0:00 [comp_1.0.2] 669 ? S 0:00 [comp_1.0.3] 670 ? S 0:00 [comp_1.0.4] 671 ? S 0:00 [comp_1.0.5] 672 ? S 0:00 [comp_1.0.6] 673 ? S 0:00 [comp_1.0.7] 674 ? S 0:00 [sdma0] 675 ? S 0:00 [sdma1] 676 ? S 0:00 [uvd] 677 ? S 0:00 [uvd_enc0] 678 ? S 0:00 [uvd_enc1] 679 ? S 0:00 [vce0] 680 ? S 0:00 [vce1] 681 ? S 0:00 [vce2] 695 ? I< 0:00 [kworker/4:1H-kblockd] 879 ? I< 0:00 [kdmflush] 885 ? I< 0:00 [kcryptd_io/254:] 886 ? I< 0:00 [kcryptd/254:0] 887 ? S 0:01 [dmcrypt_write/2] 949 ? I< 0:00 [kdmflush] 959 ? I< 0:00 [kdmflush] 984 ? S 0:01 [jbd2/dm-2-8] 985 ? I< 0:00 [ext4-rsv-conver] 1053 ? Ss 0:00 /usr/lib/systemd/systemd-journald 1060 ? D 0:01 [kworker/u16:8+events_unbound] 1068 ? Ss 0:00 /usr/sbin/haveged -w 1024 -v 0 -F 1101 ? Ss 0:00 /usr/lib/systemd/systemd-udevd 1444 ? I< 0:00 [acpi_thermal_pm] 1484 ? S 0:00 [irq/32-mei_me] 1505 ? I< 0:00 [led_workqueue] 1641 ? I< 0:00 [cfg80211] 1646 ? I 0:00 [kworker/u16:9-kcryptd/254:0] 1684 ? S 0:00 [md124_raid1] 1705 ? I< 0:00 [kdmflush] 1709 ? SLsl 0:00 @sbin/mdmon --offroot --takeover md127 1710 ? SLsl 0:00 @sbin/mdmon --offroot --takeover md125 1732 ? Ss 0:00 /sbin/mdadm --monitor -d 60 -m root@localhost --scan 1741 ? I< 0:00 [dm_bufio_cache] 1745 ? I< 0:00 [kdmflush] 1746 ? I< 0:00 [kdmflush] 1783 ? I< 0:00 [xfsalloc] 1784 ? I< 0:00 [xfs_mru_cache] 1787 ? I< 0:00 [xfs-buf/dm-3] 1788 ? I< 0:00 [xfs-conv/dm-3] 1789 ? I< 0:00 [xfs-cil/dm-3] 1790 ? I< 0:00 [xfs-reclaim/dm-] 1791 ? I< 0:00 [xfs-eofblocks/d] 1794 ? I< 0:00 [xfs-log/dm-3] 1795 ? S 0:00 [xfsaild/dm-3] 1798 ? I< 0:00 [kdmflush] 1800 ? I< 0:00 [kcopyd] 1802 ? I< 0:00 [dm-thin] 1803 ? I< 0:00 [kdmflush] 1813 ? I< 0:00 [kdmflush] 1818 ? I< 0:00 [kdmflush] 1830 ? I< 0:00 [xfs-buf/dm-8] 1831 ? I< 0:00 [xfs-conv/dm-8] 1832 ? I< 0:00 [xfs-cil/dm-8] 1833 ? I< 0:00 [xfs-reclaim/dm-] 1834 ? I< 0:00 [xfs-eofblocks/d] 1835 ? I< 0:00 [xfs-log/dm-8] 1836 ? S 0:00 [xfsaild/dm-8] 1841 ? S<sl 0:00 /sbin/auditd 1866 ? Ss 0:00 /usr/sbin/smartd -n 1867 ? Ss 0:01 /usr/bin/dbus-daemon --system --address=systemd: --no 1981 ? S 0:00 bpfilter_umh 1992 ? Ss 0:00 /usr/sbin/cupsd -l 1995 ? Ssl 0:00 /usr/sbin/irqbalance --foreground 2007 ? Ssl 0:00 /usr/lib/polkit-1/polkitd --no-debug 2008 ? Ss 0:00 /usr/lib/systemd/systemd-machined 2050 ? Ss 0:00 /usr/sbin/mcelog --ignorenodev --daemon --foreground 2053 ? Ss 0:00 /usr/lib/systemd/systemd-logind 2232 ? Ssl 0:00 /usr/sbin/NetworkManager --no-daemon 2271 ? Ssl 0:00 /usr/sbin/ModemManager 2775 ? Sl 0:00 /usr/sbin/gdm 2832 ? Ss 0:00 /usr/lib/postfix/bin//master -w 2833 ? S 0:00 pickup -l -t fifo -u 2834 ? S 0:00 qmgr -l -t fifo -u 2847 ? Ss 0:00 /usr/sbin/cron -n 2873 ? S 0:00 [RTW_CMD_THREAD] 2874 ? Ssl 0:00 /usr/lib/accounts-daemon 2897 ? Ss 0:00 /usr/sbin/wpa_supplicant -c /etc/wpa_supplicant/wpa_s 2902 ? Sl 0:00 gdm-session-worker [pam/gdm-launch-environment] 2931 ? Ss 0:00 /usr/lib/systemd/systemd --user 2932 ? S 0:00 (sd-pam) 2940 tty7 Ssl+ 0:00 /usr/lib/gdm/gdm-x-session --register-session gnome-s 2942 tty7 Sl+ 0:00 /usr/bin/X vt7 -displayfd 3 -auth /run/user/484/gdm/X 2962 ? Ss 0:00 /usr/bin/dbus-daemon --session --address=systemd: --n 2964 tty7 Sl+ 0:00 /usr/lib/gnome-session-binary --autostart /usr/share/ 2992 ? Ssl 0:00 /usr/lib/at-spi2/at-spi-bus-launcher 2997 ? S 0:00 /usr/bin/dbus-daemon --config-file=/usr/share/default 3018 ? Ssl 0:00 /usr/bin/pulseaudio --daemonize=no 3019 ? Ssl 0:00 /usr/lib/gnome-session-ctl --monitor 3021 ? Ssl 0:00 /usr/lib/gnome-session-binary --systemd-service --ses 3026 ? Ssl 0:01 /usr/bin/gnome-shell 3027 ? SNsl 0:00 /usr/lib/rtkit/rtkit-daemon 3076 ? Ssl 0:00 /usr/lib/xdg-permission-store 3081 ? Ssl 0:00 /usr/lib/upower/upowerd 3117 ? Sl 0:00 ibus-daemon --panel disable -r --xim 3122 ? Sl 0:00 /usr/lib64/ibus/ibus-dconf 3124 ? Sl 0:00 /usr/lib64/ibus/ibus-x11 --kill-daemon 3132 ? Sl 0:00 /usr/lib64/ibus/ibus-portal 3140 ? Sl 0:00 /usr/lib/at-spi2/at-spi2-registryd --use-gnome-sessio 3150 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-smartcard 3151 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-wacom 3152 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-color 3153 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-rfkill 3154 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-a11y-settings 3155 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-media-keys 3156 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-keyboard 3157 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-xsettings 3158 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-power 3159 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-print-notifica 3160 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-sound 3162 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-wwan 3163 ? Sl 0:00 /usr/lib64/ibus/ibus-engine-simple 3203 ? Sl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-printer 3210 ? Sl 0:00 /usr/lib/dconf-service 3232 ? Ssl 0:00 /usr/lib/colord 3242 tty1 Ss+ 0:00 /sbin/agetty -o -p -- \u --noclear tty1 linux 3245 ? Sl 0:00 gdm-session-worker [pam/gdm-password] 3252 ? Ss 0:00 /usr/lib/systemd/systemd --user 3253 ? S 0:00 (sd-pam) 3263 ? SLl 0:00 /usr/bin/gnome-keyring-daemon --daemonize --login 3269 tty2 Ssl+ 0:00 /usr/lib/gdm/gdm-x-session --register-session --run-s 3271 tty2 Sl+ 0:12 /usr/bin/X vt2 -displayfd 3 -auth /run/user/1000/gdm/ 3291 ? Ss 0:00 /usr/bin/dbus-daemon --session --address=systemd: --n 3293 tty2 Sl+ 0:00 /usr/lib/gnome-session-binary 3391 ? Ss 0:00 /usr/bin/ssh-agent /usr/bin/gpg-agent --sh --daemon - 3392 ? Ss 0:00 /usr/bin/gpg-agent --sh --daemon --keep-display /etc/ 3414 ? Ssl 0:00 /usr/lib/gvfs/gvfsd 3420 ? Ssl 0:00 /usr/lib/at-spi2/at-spi-bus-launcher 3426 ? S 0:00 /usr/bin/dbus-daemon --config-file=/usr/share/default 3453 ? Ssl 0:00 /usr/bin/pulseaudio --daemonize=no 3454 ? Ssl 0:00 /usr/lib/gnome-session-ctl --monitor 3456 ? Ssl 0:00 /usr/lib/gnome-session-binary --systemd-service --ses 3470 ? Ssl 0:13 /usr/bin/gnome-shell 3505 ? S 0:00 /usr/lib/pulse/gconf-helper 3507 ? S 0:00 /usr/lib/GConf/2/gconfd-2 3529 ? Sl 0:00 /usr/lib/at-spi2/at-spi2-registryd --use-gnome-sessio 3530 ? Ssl 0:00 /usr/lib/xdg-permission-store 3537 ? Sl 0:00 /usr/lib/gnome-shell/gnome-shell-calendar-server 3540 ? Sl 0:00 /usr/lib/mission-control-5 3541 ? Ssl 0:00 /usr/lib/gvfs/gvfs-udisks2-volume-monitor 3546 ? Sl 0:00 /usr/lib/goa-daemon 3554 ? Ssl 0:00 /usr/lib/evolution-data-server/evolution-source-regis 3555 ? SLsl 0:00 /usr/lib/udisks2/udisksd 3617 ? Sl 0:00 /usr/lib/goa-identity-service 3644 ? Ssl 0:00 /usr/lib/gvfs/gvfs-afc-volume-monitor 3649 ? Ssl 0:00 /usr/lib/gvfs/gvfs-goa-volume-monitor 3653 ? Ssl 0:00 /usr/lib/gvfs/gvfs-mtp-volume-monitor 3657 ? Ssl 0:00 /usr/lib/gvfs/gvfs-gphoto2-volume-monitor 3663 ? Sl 0:00 ibus-daemon --panel disable -r --xim 3668 ? Sl 0:00 /usr/lib64/ibus/ibus-dconf 3669 ? Sl 0:00 /usr/lib64/ibus/ibus-extension-gtk3 3671 ? Sl 0:00 /usr/lib64/ibus/ibus-x11 --kill-daemon 3674 ? Sl 0:00 /usr/lib64/ibus/ibus-portal 3689 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-sharing 3690 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-datetime 3691 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-smartcard 3692 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-color 3693 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-housekeeping 3695 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-screensaver-pr 3696 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-media-keys 3697 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-xsettings 3698 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-wacom 3700 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-a11y-settings 3701 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-keyboard 3703 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-power 3704 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-sound 3706 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-wwan 3707 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-rfkill 3708 ? Ssl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-print-notifica 3713 ? Ssl 0:00 /usr/lib/evolution-data-server/evolution-calendar-fac 3720 ? Sl 0:00 /usr/lib64/ibus/ibus-engine-simple 3732 ? SNl 0:01 /usr/lib/tracker-miner-fs 3736 ? Sl 0:01 /usr/bin/gnome-software --gapplication-service 3768 ? Sl 0:00 /usr/lib/gsd-disk-utility-notify 3769 ? Sl 0:00 /usr/lib/evolution-data-server/evolution-data-server/ 3779 ? S 0:00 /bin/sh /usr/bin/xdg-su -c /sbin/yast2 online_update 3789 ? Sl 0:00 /usr/bin/gnomesu -c /sbin/yast2 online_update 3793 ? S 0:00 /usr/lib/libgnomesu/gnomesu-pam-backend 12 11 root /s 3807 ? S 0:00 /bin/bash /sbin/yast2 online_update 3820 ? Sl 0:00 /usr/lib/gnome-settings-daemon-3.0/gsd-printer 3840 ? Sl 0:00 /usr/lib/dconf-service 3842 ? Ssl 0:00 /usr/lib/evolution-data-server/evolution-addressbook- 3862 ? Sl 0:20 /usr/bin/ruby.ruby2.5 --encoding=utf-8 /usr/lib/YaST2 3897 ? Ssl 0:01 /usr/lib/fwupd/fwupd 3913 ? Ss 0:00 gpg-agent --homedir /var/tmp/zypp.fZsYHK/zypp-trusted 4004 ? Ss 0:00 gpg-agent --homedir /var/tmp/zypp.fZsYHK/PublicKey -- 4014 ? Ss 0:00 gpg-agent --homedir /var/tmp/zypp.fZsYHK/zypp-general 4053 ? S 0:00 /usr/bin/systemd-inhibit --what=sleep:shutdown:idle - 4054 ? S 0:00 /usr/lib/zypp/plugins/commit/snapper-zypp-plugin 4055 ? S 0:00 /usr/bin/cat 4056 ? S 0:00 /bin/bash /usr/lib/zypp/plugins/commit/btrfs-defrag-p 4063 ? Sl 0:00 /usr/sbin/snapperd 4146 ? I 0:00 [kworker/7:0-events_power_efficient] 4199 ? I 0:00 [kworker/2:0-md] 4280 ? I 0:00 [kworker/1:1-events] 4391 ? I 0:00 [kworker/6:1-mm_percpu_wq] 4421 ? I 0:00 [kworker/3:0-mm_percpu_wq] 4450 ? I 0:00 [kworker/0:0-events] 4465 ? I 0:00 [kworker/4:0-mm_percpu_wq] 4467 ? SLl 0:00 /usr/bin/seahorse --gapplication-service 4550 ? Sl 0:00 /usr/lib/gvfs/gvfsd-trash --spawner :1.4 /org/gtk/gvf 4691 ? I 0:00 [kworker/5:2-mm_percpu_wq] 4703 ? I 0:00 [kworker/7:2-events_power_efficient] 4712 ? Sl 0:00 /usr/lib/gvfs/gvfsd-burn --spawner :1.4 /org/gtk/gvfs 4759 ? I 0:00 [kworker/u16:3-events_unbound] 4760 ? I 0:00 [kworker/u16:6-kcryptd/254:0] 4944 ? Ssl 0:00 /usr/lib/gvfs/gvfsd-metadata 5000 ? S 0:00 dbus-launch --autolaunch 016627c3c4784cd4812d4b7e96a3 5001 ? Ss 0:00 /usr/bin/dbus-daemon --syslog-only --fork --print-pid 5419 ? Ssl 0:00 /usr/sbin/nscd 5471 ? I 0:00 [kworker/6:0-mm_percpu_wq] 5796 ? SLsl 0:00 /usr/sbin/dmeventd -f 5857 ? Ss 0:00 avahi-daemon: running [i7g4x4a.local] 6192 ? I< 0:00 [iprt-VBoxWQueue] 6195 ? S 0:00 [iprt-VBoxTscThr] 6197 ? I 0:00 [kworker/0:2-events] 6202 ? I 0:00 [kworker/3:1] 6377 ? S 0:00 /bin/sh /var/adm/update-scripts/posttransjBtVTw/virtu 6378 ? S 0:00 /bin/bash -c set +e; /usr/lib/module-init-tools/regen 6379 ? S 0:00 /bin/bash /usr/lib/module-init-tools/regenerate-initr 6382 ? S 0:00 /bin/bash --norc /sbin/mkinitrd 11955 ? I 0:00 [kworker/1:0-mm_percpu_wq] 28599 ? S 0:00 /usr/bin/perl /sbin/update-bootloader --refresh 28600 ? S 0:00 /bin/bash /usr/lib/bootloader/grub2/config 28601 ? S 0:00 /bin/bash /usr/lib/bootloader/grub2/config 28602 ? S 0:00 /bin/sh /usr/sbin/grub2-mkconfig -o /boot/grub2/grub. 29685 ? S 0:00 /bin/sh /etc/grub.d/30_os-prober 29691 ? S 0:00 /bin/sh /etc/grub.d/30_os-prober 29692 ? S 0:00 /bin/sh /usr/bin/os-prober 29693 ? S 0:00 tr ^ 29694 ? S 0:00 paste -s -d 29789 ? S 0:00 /bin/sh /usr/bin/os-prober 29828 ? I 0:00 [kworker/2:2] 29835 ? D 0:00 blkid 29836 ? S 0:00 grep btrfs 29837 ? S 0:00 cut -d : -f 1 29838 ? I 0:00 [kworker/7:3-events_power_efficient] 29843 ? D 0:00 /usr/lib/systemd/systemd-udevd 29850 ? Ssl 0:00 /usr/lib/gnome-terminal-server 29857 pts/0 Ss 0:00 bash 29889 pts/0 S 0:00 su 29892 pts/0 S 0:00 bash 29925 pts/0 R+ 0:00 ps ax And here is some information about the device and medium (some commercial medium NOT copy-protected): i7:/home/windl # isoinfo dev=/dev/sr0 -d Setting input-charset to 'UTF-8' from locale. CD-ROM is in ISO 9660 format System id: Volume id: FRANKFURT_XP Volume set id: Publisher id: Data preparer id: Application id: NERO BURNING ROM Copyright File id: Abstract File id: Bibliographic File id: Volume set size is: 1 Volume set sequence number is: 1 Logical block size is: 2048 Volume size is: 766224 Joliet with UCS level 3 found. No SUSP/Rock Ridge present i7:/home/windl # blockdev --getsize64 /dev/sr0 1569226752 # that is 766224*2048 i7:/home/windl # blockdev --getss /dev/sr0 2048 i7:/home/windl # blockdev --getpbsz /dev/sr0 2048 i7:/home/windl # blockdev --getra /dev/sr0 1024 Interestingly these all do work without any special noise: i7:/home/windl # dd if=/dev/sr0 of=/dev/null bs=2k count=1 seek=766223 1+0 Datens���tze ein 1+0 Datens���tze aus 2048 bytes (2,0 kB, 2,0 KiB) copied, 1,88413 s, 1,1 kB/s i7:/home/windl # dd if=/dev/sr0 of=/dev/null bs=2k count=1 seek=766224 1+0 Datens���tze ein 1+0 Datens���tze aus 2048 bytes (2,0 kB, 2,0 KiB) copied, 0,00171338 s, 1,2 MB/s i7:/home/windl # dd if=/dev/sr0 of=/dev/null bs=2k count=1 seek=766225 1+0 Datens���tze ein 1+0 Datens���tze aus 2048 bytes (2,0 kB, 2,0 KiB) copied, 0,00176503 s, 1,2 MB/s