MX Linux 19 Lock Screen Not Working

[palevandro]

Hi,

I'm having a problem with the lock screen on MX Linux 19, I already made

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Ctrl + Alt + Delete 

is the shortcut but it doesn't work.

Also, in the menu

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Session and Startup

, I ticked checkbõ

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Lock scrên bẻoe sleep

, but my laptop didn't lock screen before sleep.

Here is my system information:

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System:    Host: ducpv Kernel: 4.19.0-6-amd64 x86_64 bits: 64 compiler: gcc v: 8.3.0 
           parameters: BOOT_IMAGE=/boot/vmlinuz-4.19.0-6-amd64 
           root=UUID=ebff5839-e240-4294-87c9-d52591c76251 ro quiet splash 
           Desktop: Xfce 4.14.1 tk: Gtk 3.24.5 info: xfce4-panel wm: xfwm4 dm: LightDM 1.26.0 
           Distro: MX-19_x64 patito feo October 21  2019 base: Debian GNU/Linux 10 (buster) 
Machine:   Type: Laptop System: Notebook product: W35xSTQ_370ST v: N/A serial: <filter> Chassis: 
           type: 9 serial: <filter> 
           Mobo: Notebook model: W35xSTQ_370ST serial: <filter> BIOS: Prema Mod v: 1.03.02PM v2 
           date: 03/12/2014 
Battery:   ID-1: BAT0 charge: 70.1 Wh condition: 70.1/77.0 Wh (91%) volts: 16.8/14.8 
           model: NOTEBOOK BAT type: Li-ion serial: <filter> status: Full 
CPU:       Topology: Quad Core model: Intel Core i7-4700MQ bits: 64 type: MT MCP arch: Haswell 
           family: 6 model-id: 3C (60) stepping: 3 microcode: 27 L2 cache: 6144 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 38313 
           Speed: 3247 MHz min/max: 800/3400 MHz Core speeds (MHz): 1: 3240 2: 3237 3: 3372 
           4: 3236 5: 3276 6: 3199 7: 3383 8: 3247 
           Vulnerabilities: Type: itlb_multihit status: KVM: Split huge pages 
           Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable 
           Type: mds mitigation: Clear CPU buffers; SMT vulnerable 
           Type: meltdown mitigation: PTI 
           Type: spec_store_bypass 
           mitigation: Speculative Store Bypass disabled via prctl and seccomp 
           Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization 
           Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional, IBRS_FW, 
           STIBP: conditional, RSB filling 
           Type: tsx_async_abort status: Not affected 
Graphics:  Device-1: Intel 4th Gen Core Processor Integrated Graphics vendor: CLEVO/KAPOK 
           driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:0416 
           Device-2: NVIDIA GK106M [GeForce GTX 765M] driver: N/A bus ID: 01:00.0 
           chip ID: 10de:11e2 
           Display: x11 server: X.Org 1.20.4 driver: modesetting unloaded: fbdev,vesa 
           resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa DRI Intel Haswell Mobile v: 4.5 Mesa 18.3.6 compat-v: 3.0 
           direct render: Yes 
Audio:     Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio vendor: CLEVO/KAPOK 
           driver: snd_hda_intel v: kernel bus ID: 00:03.0 chip ID: 8086:0c0c 
           Device-2: Intel 8 Series/C220 Series High Definition Audio vendor: CLEVO/KAPOK 
           driver: snd_hda_intel v: kernel bus ID: 00:1b.0 chip ID: 8086:8c20 
           Sound Server: ALSA v: k4.19.0-6-amd64 
Network:   Device-1: Realtek RTL8723AE PCIe Wireless Network Adapter driver: rtl8723ae v: kernel 
           port: d000 bus ID: 03:00.0 chip ID: 10ec:8723 
           IF: wlan0 state: up mac: <filter> 
           Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: CLEVO/KAPOK 
           driver: r8169 v: kernel port: c000 bus ID: 04:00.2 chip ID: 10ec:8168 
           IF: eth0 state: down mac: <filter> 
Drives:    Local Storage: total: 1.13 TiB used: 720.89 GiB (62.4%) 
           ID-1: /dev/sda vendor: Western Digital model: WD10JPVX-22JC3T0 size: 931.51 GiB 
           block size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s rotation: 5400 rpm 
           serial: <filter> rev: 1A01 scheme: GPT 
           ID-2: /dev/sdb vendor: Kingston model: SH103S3240G size: 223.57 GiB block size: 
           physical: 512 B logical: 512 B speed: 6.0 Gb/s serial: <filter> rev: BBF0 scheme: MBR 
Partition: ID-1: / raw size: 221.54 GiB size: 217.06 GiB (97.98%) used: 38.38 GiB (17.7%) 
           fs: ext4 dev: /dev/sdb1 
           ID-2: swap-1 size: 2.00 GiB used: 0 KiB (0.0%) fs: swap swappiness: 15 (default 60) 
           cache pressure: 100 (default) dev: /dev/sdb2 
Sensors:   System Temperatures: cpu: 67.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Repos:     No active apt repos in: /etc/apt/sources.list 
           Active apt repos in: /etc/apt/sources.list.d/antix.list 
           1: deb http://iso.mxrepo.com/antix/buster buster main
           Active apt repos in: /etc/apt/sources.list.d/debian-stable-updates.list 
           1: deb http://deb.debian.org/debian buster-updates main contrib non-free
           Active apt repos in: /etc/apt/sources.list.d/debian.list 
           1: deb http://deb.debian.org/debian buster main contrib non-free
           2: deb http://deb.debian.org/debian-security buster/updates main contrib non-free
           Active apt repos in: /etc/apt/sources.list.d/google-chrome.list 
           1: deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
           Active apt repos in: /etc/apt/sources.list.d/mx.list 
           1: deb http://mxrepo.com/mx/repo/ buster main non-free
           Active apt repos in: /etc/apt/sources.list.d/opera-stable.list 
           1: deb https://deb.opera.com/opera-stable/ stable non-free
           Active apt repos in: /etc/apt/sources.list.d/teamviewer.list 
           1: deb http://linux.teamviewer.com/deb stable main
           No active apt repos in: /etc/apt/sources.list.d/various.list 
           Active apt repos in: /etc/apt/sources.list.d/vscode.list 
           1: deb [arch=amd64] http://packages.microsoft.com/repos/vscode stable main
Info:      Processes: 257 Uptime: 1h 38m Memory: 15.59 GiB used: 2.19 GiB (14.0%) Init: SysVinit 
           v: 2.93 runlevel: 5 default: 5 Compilers: gcc: 8.3.0 alt: 7/8 Shell: bash v: 5.0.3 
           running in: quick-system-in inxi: 3.0.36 

Thank you for helping me!

[JayM]

Control alt delete is already the default keystroke combo to lock your running session so there's no need to tweak any settings.

When you installed MX-19 did you verify the md5 and/or sha sums first to make sure your iso file was good?

[anmol]

I am facing same issue. I did not tested checksum.

[palevandro]

Well, I didn't verify md5. How I can fix this issue ?

[JayM]

Section 2 of the user manual would be the best place to start.