Here's the output of "dmesg | grep -iE 'warn|error|fail' && tail -n 10 ~/.xsession-errors". There are a lot of Errors and Warnings here that I don't understand. Does this suggest a cause or causes of crashing? I've checked sensor temperatures and don't see anything that looks out of bounds.
[ 0.000000] tsc: Fast TSC calibration failed
[ 0.871986] RAS: Correctable Errors collector initialized.
[ 1.063763] ACPI Warning: SystemIO range 0x0000000000000B00-0x0000000000000B08 conflicts with OpRegion 0x0000000000000B00-0x0000000000000B0F (\GSA1.SMBI) (20210730/utaddress-204)
[ 4.027273] EXT4-fs (nvme0n1p2): re-mounted. Opts: errors=remount-ro. Quota mode: none.
[ 4.390540] thermal thermal_zone1: failed to read out thermal zone (-61)
[ 6.624038] Bluetooth: hci0: Reading Intel version command failed (-110)
[ 4648.821149] nouveau 0000:09:00.0: Xorg[2201]: failed to idle channel 3 [Xorg[2201]]
[ 4663.820437] nouveau 0000:09:00.0: Xorg[2201]: failed to idle channel 3 [Xorg[2201]]
[ 4663.821092] WARNING: CPU: 10 PID: 0 at drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c:284 gk104_fifo_engine_id+0x4f/0x90 [nouveau]
[ 4663.821454] ? __warn+0x8c/0x100
[ 4665.822012] WARNING: CPU: 10 PID: 6702 at drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c:159 gk104_fifo_runlist_commit+0x145/0x170 [nouveau]
[ 4665.822320] ? __warn+0x8c/0x100
[ 4668.117544] nouveau 0000:09:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]
[7944:7953:0830/144326.305386:ERROR:ssl_client_socket_impl.cc(883)] handshake failed; returned -1, SSL error code 1, net_error -200
[7896:7896:0830/144326.535141:ERROR:interface_endpoint_client.cc(722)] Message 0 rejected by interface blink.mojom.WidgetHost
[7944:7953:0830/144328.582366:ERROR:ssl_client_socket_impl.cc(883)] handshake failed; returned -1, SSL error code 1, net_error -200
[26463:26463:0830/144328.739939:ERROR:shared_image_manager.cc(223)] SharedImageManager::ProduceSkia: Trying to Produce a Skia representation from a non-existent mailbox.
[0830/144631.390763:INFO:file_host_settings.cc(49)] Host settings loaded.
[27070:41:0830/145009.599525:ERROR:stun_port.cc(101)] Binding request timed out from [0:0:0:x:x:x:x:x]:51787 (any)
[7896:7896:0830/145040.333033:ERROR:fallback_task_provider.cc(127)] Every renderer should have at least one task provided by a primary task provider. If a "Renderer" fallback task is shown, it is a bug. If you have repro steps, please file a new bug and tag it as a dependency of crbug.com/739782.
[27070:41:0830/151106.802657:ERROR:stun_port.cc(101)] Binding request timed out from [0:0:0:x:x:x:x:x]:49911 (any)
[27070:41:0830/151654.099520:ERROR:stun_port.cc(101)] Binding request timed out from [0:0:0:x:x:x:x:x]:37925 (any)
[27070:41:0830/161527.740159:ERROR:stun_port.cc(101)] Binding request timed out from [0:0:0:x:x:x:x:x]:43542 (any)
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Welcome, @awcrapo to the community!
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specs of your pc would help. Please post output of inxi -F
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(incomplete output removed)
Did you intentionally remove System, Machine, CPU, and Graphics sections in the output?
Nope. I didn't notice that Select All only selected what was visible in the console window. Trying again.
System:
Host: naturalsemantics1 Kernel: 5.15.0-119-generic x86_64 bits: 64
Desktop: MATE 1.26.0 Distro: Ubuntu 22.04.4 LTS (Jammy Jellyfish)
Machine:
Type: Desktop System: Gigabyte product: X570 AORUS ULTRA v: -CF
serial:
Mobo: Gigabyte model: X570 AORUS ULTRA v: x.x
serial: UEFI: American Megatrends v: F11
date: 12/06/2019
CPU:
Info: 12-core model: AMD Ryzen 9 3900X bits: 64 type: MT MCP cache:
L2: 6 MiB
Speed (MHz): avg: 2210 min/max: 2200/3800 cores: 1: 2799 2: 2196 3: 2205
4: 2202 5: 2193 6: 2195 7: 2195 8: 2194 9: 2190 10: 2195 11: 2196 12: 2195
13: 2197 14: 2196 15: 2195 16: 2196 17: 2130 18: 2023 19: 2196 20: 2193
21: 2190 22: 2193 23: 2198 24: 2195
Graphics:
Device-1: NVIDIA GK208B [GeForce GT 710] driver: nouveau v: kernel
Device-2: Logitech C922 Pro Stream Webcam type: USB
driver: snd-usb-audio,uvcvideo
Display: x11 server: X.Org v: 1.21.1.4 driver: X: loaded: modesetting
unloaded: fbdev,vesa gpu: nouveau resolution: 1: 1920x1080~60Hz
2: 1920x1080~60Hz
OpenGL: renderer: NV106 v: 4.3 Mesa 23.2.1-1ubuntu3.1~22.04.2
Audio:
Device-1: NVIDIA GK208 HDMI/DP Audio driver: snd_hda_intel
Device-2: AMD Starship/Matisse HD Audio driver: snd_hda_intel
Device-3: Logitech C922 Pro Stream Webcam type: USB
driver: snd-usb-audio,uvcvideo
Sound Server-1: ALSA v: k5.15.0-119-generic running: yes
Sound Server-2: PulseAudio v: 15.99.1 running: yes
Sound Server-3: PipeWire v: 0.3.48 running: yes
Network:
Device-1: Intel Wi-Fi 6 AX200 driver: iwlwifi
IF: wlp4s0 state: up mac: 74:d8:3e:01:13:b9
Device-2: Intel I211 Gigabit Network driver: igb
IF: enp5s0 state: up speed: 1000 Mbps duplex: full mac: b4:2e:99:fb:89:70
IF-ID-1: docker0 state: down mac: 02:42:41:b8:4e:c9
Bluetooth:
Device-1: Intel AX200 Bluetooth type: USB driver: btusb
Report: hciconfig ID: hci0 rfk-id: 0 state: down
bt-service: enabled,running rfk-block: hardware: no software: no
address: 00:00:00:00:00:00
Drives:
Local Storage: total: 931.51 GiB used: 205.99 GiB (22.1%)
ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 970 EVO 1TB
size: 931.51 GiB
Partition:
ID-1: / size: 915.32 GiB used: 205.98 GiB (22.5%) fs: ext4
dev: /dev/nvme0n1p2
ID-2: /boot/efi size: 511 MiB used: 6.1 MiB (1.2%) fs: vfat
dev: /dev/nvme0n1p1
Swap:
ID-1: swap-1 type: file size: 2 GiB used: 0 KiB (0.0%) file: /swapfile
Sensors:
System Temperatures: cpu: 43.0 C mobo: 35.0 C gpu: nouveau temp: 44.0 C
Fan Speeds (RPM): cpu: 0 fan-1: 0 fan-3: 0
Info:
Processes: 451 Uptime: 3h 46m Memory: 62.73 GiB used: 3.49 GiB (5.6%)
Shell: Bash inxi: 3.3.13
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Make sure your BIOS is up to date. BIOSes for X570 chipsets had massive issues with power delivery to the CPU under Linux for the longest time, can attest to it personally (although most issues were happening under idle, not load).
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My crashes seem somewhat random, if anything correlated with doing something in a browser interface with little load. I thought it might be GUI-related. Thanks for your help!
Hi, @awcrapo 
You wrote:
(Usual disclaimer: please note that I'm just another Forum user here. I'm NOT a Ubuntu or Ubuntu MATE developer).
Besides all the the troubleshooting that you correctly have already done and the great help that @pavlos_kairis has given you here, I would also look at the /var/crash directory.
Do you have any files with extension .crash in that /var/crash folder? If so, what are their filenames? I also suggest that you open those ".crash" files (with a text editor) and see their content. Usually, the more informative lines (at least for me) in those .crash files are the lines that begin with:
ProblemType: (usually that line says ProblemType: Crash)ExecutablePath: (which has the full path for the program that crashed)ProcCmdline: (which has the line that was was used to start that program)Title: (a very informative line when it exists but, unfortunately, in some ".crash" files that "Title:" line does not exist)Package: (the name and version of the package of the program that crashed)
If you're interested, you may also want to take a look at the "StacktraceTop:", "Stacktrace:", "ThreadStacktrace:", "XsessionErrors:" and "JournalErrors:" sections also in that ".crash" file, but please be aware that some of those sections may contain a LOT of information and that some of that information, in some cases, you may NOT want to disclose in a public forum.
I hope this helps Please reply again later to tell us if you've found any file in the /var/crash directory (folder) and include the information that I've mentioned above from the ".crash" file, if you feel comfortable doing so.
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