Package: lightdm Version: 1.18.3-1 Severity: normal Dear Maintainer,
I have a Dell Inspiron E1505 laptop with Debian 9.7 amd64 and Xfce. I use an external monitor, keyboard, and mouse via a KVM switch. When I lock the screen, the CPU goes to 100%: 2019-02-01 15:29:57 dpchrist@tinkywinky ~ $ top -b -n 1 | head top - 15:30:01 up 7:59, 2 users, load average: 1.19, 1.17, 1.08 Tasks: 241 total, 2 running, 239 sleeping, 0 stopped, 0 zombie %Cpu(s): 30.6 us, 5.2 sy, 0.3 ni, 63.7 id, 0.1 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem : 2043088 total, 87792 free, 926800 used, 1028496 buff/cache KiB Swap: 1952764 total, 1786848 free, 165916 used. 422364 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 6539 lightdm 20 0 587524 51660 25884 R 87.5 2.5 103:00.92 lightdm-gt+ 6528 root 20 0 259824 19520 13004 S 18.8 1.0 12:47.44 Xorg 6915 dpchrist 20 0 43276 3464 2856 R 6.2 0.2 0:00.03 top ~ Please advise with trouble-shooting steps. David -- System Information: Debian Release: 9.7 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 4.9.0-8-amd64 (SMP w/2 CPU cores) Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968), LANGUAGE=C (charmap=ANSI_X3.4-1968) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages lightdm depends on: ii adduser 3.115 ii dbus 1.10.26-0+deb9u1 ii debconf [debconf-2.0] 1.5.61 ii libaudit1 1:2.6.7-2 ii libc6 2.24-11+deb9u3 ii libgcrypt20 1.7.6-2+deb9u3 ii libglib2.0-0 2.50.3-2 ii libpam-systemd 232-25+deb9u8 ii libpam0g 1.1.8-3.6 ii libxcb1 1.12-1 ii libxdmcp6 1:1.1.2-3 ii lightdm-gtk-greeter [lightdm-greeter] 2.0.2-1 Versions of packages lightdm recommends: ii xserver-xorg 1:7.7+19 Versions of packages lightdm suggests: pn accountsservice <none> ii upower 0.99.4-4+b1 pn xserver-xephyr <none> -- debconf information: * shared/default-x-display-manager: lightdm lightdm/daemon_name: /usr/sbin/lightdm