Blank screen with mouse cursor after wake from sleep (KDE)

Dear EndeavourOS experts on this forum, I have noticed that I get a blank screen with mouse cursor after waking the machine from sleep. This happens in about 1 out 5 wake from sleep. Alt + F2 gives me a TTY where I can login for doing a reboot. Then everything is fine…

Googling on this problem gives various results, but really nothing conclusive. Would you mind giving me some pointer on where to start troubleshooting this, which log files etc to look at…? That would be a good learning exercise for me and really appreciated.

It’s KDE, OOTB with no obscure configuration or hacks applied. System is also updated.

$ inxi -Fxxxza --no-host
System:    Kernel: 5.7.12-arch1-1 x86_64 bits: 64 compiler: gcc v: 10.1.0 
           parameters: BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=a3c85088-986b-4db8-8189-7af2f6d87dba rw quiet 
           resume=UUID=0a7aa1b6-7118-446c-9954-4776ca253e5c loglevel=3 nowatchdog 
           Desktop: KDE Plasma 5.19.4 tk: Qt 5.15.0 wm: kwin_x11 dm: SDDM Distro: EndeavourOS 
Machine:   Type: Desktop Mobo: ASUSTeK model: MAXIMUS IX HERO v: Rev 1.xx serial: <filter> 
           UEFI [Legacy]: American Megatrends v: 1301 date: 03/14/2018 
Battery:   Device-1: hidpp_battery_0 model: Logitech MX Keys Wireless Keyboard serial: <filter> 
           charge: 55% (should be ignored) rechargeable: yes status: Discharging 
CPU:       Topology: Quad Core model: Intel Core i7-7700K bits: 64 type: MT MCP arch: Kaby Lake family: 6 
           model-id: 9E (158) stepping: 9 microcode: D6 L2 cache: 8192 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 67224 
           Speed: 800 MHz min/max: 800/5000 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 801 5: 800 6: 800 
           7: 800 8: 800 
           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: srbds mitigation: Microcode 
           Type: tsx_async_abort mitigation: Clear CPU buffers; SMT vulnerable 
Graphics:  Device-1: NVIDIA GP104 [GeForce GTX 1080] vendor: ASUSTeK driver: nvidia v: 450.57 
           alternate: nouveau,nvidia_drm bus ID: 01:00.0 chip ID: 10de:1b80 
           Display: x11 server: X.Org 1.20.8 compositor: kwin_x11 driver: nvidia unloaded: fbdev,modesetting,vesa 
           alternate: nouveau,nv display ID: :0 screens: 1 
           Screen-1: 0 s-res: 2560x1440 s-dpi: 125 s-size: 520x321mm (20.5x12.6") s-diag: 611mm (24.1") 
           Monitor-1: DVI-D-0 res: 2560x1440 hz: 60 dpi: 126 size: 518x324mm (20.4x12.8") diag: 611mm (24.1") 
           Message: Unable to show advanced data. Required tool glxinfo missing. 
Audio:     Device-1: Intel 200 Series PCH HD Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel bus ID: 00:1f.3 
           chip ID: 8086:a2f0 
           Device-2: NVIDIA GP104 High Definition Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel 
           bus ID: 01:00.1 chip ID: 10de:10f0 
           Sound Server: ALSA v: k5.7.12-arch1-1 
Network:   Device-1: Intel Ethernet I219-V vendor: ASUSTeK driver: e1000e v: 3.2.6-k port: f000 bus ID: 00:1f.6 
           chip ID: 8086:15b8 
           IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full mac: <filter> 
Drives:    Local Storage: total: 473.38 GiB used: 18.60 GiB (3.9%) 
           SMART Message: Unable to run smartctl. Root privileges required. 
           ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 960 EVO 500GB size: 465.76 GiB block size: 
           physical: 512 B logical: 512 B speed: 31.6 Gb/s lanes: 4 serial: <filter> rev: 3B7QCXE7 scheme: MBR 
           ID-2: /dev/sda type: USB model: SMI USB size: 7.62 GiB block size: physical: 512 B logical: 512 B 
           serial: <filter> rev: 1100 scheme: MBR 
           SMART Message: Unknown USB bridge. Flash drive/Unsupported enclosure? 
Partition: ID-1: / raw size: 456.96 GiB size: 448.79 GiB (98.21%) used: 18.60 GiB (4.1%) fs: ext4 
           dev: /dev/nvme0n1p1 
Swap:      Kernel: swappiness: 60 (default) cache pressure: 100 (default) 
           ID-1: swap-1 type: partition size: 8.80 GiB used: 0 KiB (0.0%) priority: -2 dev: /dev/nvme0n1p2 
Sensors:   System Temperatures: cpu: 38.0 C mobo: N/A gpu: nvidia temp: 52 C 
           Fan Speeds (RPM): N/A gpu: nvidia fan: 0% 
Info:      Processes: 211 Uptime: 24m Memory: 15.57 GiB used: 2.52 GiB (16.2%) Init: systemd v: 246 Compilers: 
           gcc: 10.1.0 Packages: pacman: 1031 lib: 252 Shell: Bash v: 5.0.17 running in: konsole inxi: 3.1.05 

Sounds like this:


Thanks @jonathon, indeed this may be the issue.

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