I'm not a complete newbie (toying with linux for 20 years off and on) but never really got deep into the OS or it's workings. I've again decided to give it a go as my main OS, but I'm running into some issues with random freezes.
I have experienced this in Mint, Ubuntu, and now Manjaro (as I've tried to decide which distro I want to run with). I have not been able to identify any specific activity as a cause. I am fairly confident that the hardware is fine as I have no problems in Win10. I also ran memtest for about 10 hours with no errors. I think that it's most likely related to video drivers.
The way it looks when it freezes is not always exactly the same. Sometimes, the video and system just freeze, display unchanged. Sometimes the entire display freezes except the mouse cursor, until the cursor then freezes a couple seconds later. And a couple times I get a graphical glitch that looks like this. That screenshot may be from Mint, but it glitches about the same. The length of time the system stays up varies, but I've had it freeze before I could even enter my password at the login screen. One time I noticed that while it was frozen I was able to turn caps and numlocks on and off, but usually they are frozen too. What does happen every time is that shortly after the freeze, my monitor goes to sleep because it is not receiving any input.
So that is what I've been able to figure out so far, but I'm not sure where to go next as far as what logs I want to look at or anything.
I also want to state my appreciation for the forum software automatically saving drafts of my message. It froze twice on me while typing this all out.
System: Host: kk Kernel: 5.7.0-1-MANJARO x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: KDE Plasma 5.18.4 Distro: Manjaro Linux Machine: Type: Desktop System: Gigabyte product: Z170X-UD3 v: N/A serial: <root required> Mobo: Gigabyte model: Z170X-UD3-CF serial: <root required> UEFI [Legacy]: American Megatrends v: F23g date: 03/09/2018 CPU: Topology: Quad Core model: Intel Core i5-6600K bits: 64 type: MCP arch: Skylake-S rev: 3 L2 cache: 6144 KiB flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 28009 Speed: 800 MHz min/max: 800/3900 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 800 Graphics: Device-1: AMD Baffin [Radeon RX 460/560D / Pro 450/455/460/555/555X/560/560X] vendor: XFX Pine Polaris 21 XL driver: amdgpu v: kernel bus ID: 01:00.0 Display: x11 server: X.Org 1.20.8 driver: amdgpu FAILED: ati unloaded: modesetting resolution: 1920x1080~60Hz OpenGL: renderer: Radeon RX 560 Series (POLARIS11 DRM 3.36.0 5.7.0-1-MANJARO LLVM 10.0.0) v: 4.6 Mesa 20.0.5 direct render: Yes Audio: Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: Gigabyte driver: snd_hda_intel v: kernel bus ID: 00:1f.3 Device-2: AMD Baffin HDMI/DP Audio [Radeon RX 550 640SP / RX 560/560X] vendor: XFX Pine driver: snd_hda_intel v: kernel bus ID: 01:00.1 Sound Server: ALSA v: k5.7.0-1-MANJARO Network: Device-1: Intel Ethernet I219-V vendor: Gigabyte driver: e1000e v: 3.2.6-k port: f000 bus ID: 00:1f.6 IF: enp0s31f6 state: down mac: 40:8d:5c:1f:56:2a Device-2: Intel Wireless 8260 driver: iwlwifi v: kernel port: e000 bus ID: 0e:00.0 IF: wlp14s0 state: up mac: 34:41:5d:87:c3:78 IF-ID-1: eth0 state: up speed: -1 duplex: unknown mac: 96:4f:fe:5c:fc:42 Drives: Local Storage: total: 5.91 TiB used: 13.89 GiB (0.2%) ID-1: /dev/sda vendor: Samsung model: SSD 850 EVO M.2 500GB size: 465.76 GiB ID-2: /dev/sdb vendor: Western Digital model: WD20EARS-00MVWB0 size: 1.82 TiB ID-3: /dev/sdc vendor: Western Digital model: WD40EZRZ-00GXCB0 size: 3.64 TiB Partition: ID-1: / size: 78.73 GiB used: 13.89 GiB (17.6%) fs: ext4 dev: /dev/sda5 Sensors: System Temperatures: cpu: 41.0 C mobo: 29.8 C gpu: amdgpu temp: 39 C Fan Speeds (RPM): N/A gpu: amdgpu fan: 960 Info: Processes: 219 Uptime: 1m Memory: 7.73 GiB used: 1.16 GiB (15.0%) Init: systemd Compilers: gcc: 9.3.0 Shell: bash v: 5.0.16 inxi: 3.0.37