Package: light-locker Version: 1.8.0-2 Followup-For: Bug #870641 Hi,
I am experiencing this problem and I found a workaround ... If I lock the screen it goes black and won't unlock from the keyboard. If I ssh to the machine I can restart lightdm and get a login prompt. $ light-locker-command --lock (goes black, can't wakeup) If I create an Xorg config file that says to use the Intel driver it works. $ cat /etc/X11/xorg.conf.d/20-intel.conf Section "Device" Identifier "Intel Graphics" Driver "intel" EndSection Perusing the /var/log/Xorg.0.log finds that it was using the fbdev driver before. Here is the info on from my card. $ lspci -v [...] 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 520 (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo Skylake GT2 [HD Graphics 520] Flags: bus master, fast devsel, latency 0, IRQ 126 Memory at f0000000 (64-bit, non-prefetchable) [size=16M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at e000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: [40] Vendor Specific Information: Len=0c <?> Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [100] Process Address Space ID (PASID) Capabilities: [200] Address Translation Service (ATS) Capabilities: [300] Page Request Interface (PRI) Kernel driver in use: i915 Kernel modules: i915 [...] If I can do anything else to help debug this issue, let me know. -- System Information: Debian Release: buster/sid APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 4.18.0-2-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), LANGUAGE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages light-locker depends on: ii dconf-gsettings-backend [gsettings-backend] 0.30.0-1 ii libc6 2.27-6 ii libcairo2 1.16.0-1 ii libdbus-1-3 1.12.10-1 ii libdbus-glib-1-2 0.110-3 ii libglib2.0-0 2.58.1-2 ii libgtk-3-0 3.24.1-2 ii libpango-1.0-0 1.42.4-3 ii libpangocairo-1.0-0 1.42.4-3 ii libsystemd0 239-10 ii libx11-6 2:1.6.7-1 ii libxext6 2:1.3.3-1+b2 ii libxss1 1:1.2.3-1 ii lightdm 1.26.0-3 light-locker recommends no packages. light-locker suggests no packages. -- no debconf information