PC Processors

[insaf]

I know this quite common issue but cant to make it work properly. Then I use in machine learning tasks my PC just freezes, moreover the task is mostly GPU tasks and total CPU load in less than 20%.

Possible solution might be setting in Syslinux Configuration:rcu_nocbs=0-15 because the BIOS didn't have the "Typical Current Idle" Option.

1)

Anyway added to the grub options next things:

idle=nomwait

rcu_nocbs=0-15

GRUB_CMDLINE_LINUX="iommu=soft"

Nothing changed.

2) Deleted  files in .cache  and tmp - nothing changed

config 4.13.0-45 generic

dex@dex-pc ~ $ inxi -F && dmesg | grep -i error
System: Host: dex-pc Kernel: 4.13.0-45-generic x86_64 (64 bit)
  Desktop: Cinnamon 3.6.7 Distro: Linux Mint 18.3 Sylvia
Machine: System: Gigabyte product: AB350M-DS3H v: Default string
  Mobo: Gigabyte model: AB350M-DS3H-CF v: x.x
  Bios: American Megatrends v: F20 date: 02/06/2018
CPU: Octa core AMD Ryzen 7 2700 Eight-Core (-HT-MCP-) cache: 4096 KB
  clock speeds: max: 3200 MHz 1: 1338 MHz 2: 1372 MHz 3: 1373 MHz
  4: 1373 MHz 5: 1833 MHz 6: 1371 MHz 7: 1278 MHz 8: 1374 MHz
  9: 3898 MHz 10: 3303 MHz 11: 1464 MHz 12: 1458 MHz 13: 1462 MHz
  14: 1468 MHz 15: 1581 MHz 16: 1448 MHz
Graphics: Card: NVIDIA Device 1b82
  Display Server: X.Org 1.18.4 drivers: nvidia (unloaded: fbdev,vesa,nouveau)
  Resolution: 1920x1080@60.00hz
  GLX Renderer: GeForce GTX 1070 Ti/PCIe/SSE2
  GLX Version: 4.6.0 NVIDIA 396.37
Audio: Card-1 Advanced Micro Devices [AMD] Device 1457
  driver: snd_hda_intel
  Card-2 NVIDIA Device 10f0 driver: snd_hda_intel
  Sound: Advanced Linux Sound Architecture v: k4.13.0-45-generic
Network: Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
  driver: r8169
  IF: enp4s0 state: up speed: 100 Mbps duplex: full
  mac: e0:d5:5e:6b:32:89
Drives: HDD Total Size: 480.1GB (17.2% used)
  ID-1: /dev/sda model: SanDisk_SSD_PLUS size: 480.1GB
Partition: ID-1: / size: 87G used: 40G (49%) fs: ext4 dev: /dev/sda6
  ID-2: swap-1 size: 42.32GB used: 0.00GB (0%) fs: swap dev: /dev/sda5
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: None detected - is lm-sensors installed and configured?
Info: Processes: 325 Uptime: 35 min Memory: 2315.6/32182.8MB
  Client: Shell (bash) inxi: 2.2.35

Windows 10 works pretty fine, but such problem might also appear than using RDP for 3+ hours.

What can I do, update linux kernel, update BIOS, which is gigabyte and april 2018 version

[tuxine]

This is not an amd or linux question. This is a known weakness of Mint in combination with Cinnamon and Nvidia.

Look here: https://www.reddit.com/r/linuxmint/comments/5pg2hf/cinnamon_crashes_with_nvidia_driver_with_181/

The best thing to ask in the Mint Forum: https://forums.linuxmint.com/index.php

[abucodonosor · Accepted solution]

.. and

-> System: Host: dex-pc Kernel: 4.13.0-45-generic

That is way to old kernel. Is not even the 4.14 LTS which has some backports..

Basically you'll need and 4.15++ best is to use 4.17..

[insaf]

Kernel thats the problem, thank you. Found easy way to update kernel https://itsfoss.com/upgrade-linux-kernel-ubuntu/

[mechano]

I've had Ryzen CPU 5-1600 and 7-1700 on Gigabyte AB350N-ITX motherboard. The freeze issue I used to resolve raising a bit the CPU volts from 1.20 to 1.25 or to a max of 1.35.
Some people write to raise also CPU VCORE from 1.00 to 1.10.
Around there's lot of solutions altering C-State and so on, but it's related to power supply.
Or you change many psu till find the good and stable one, or tweak a bit with voltage CPU and/or VCore. It's important to prevent that CPU goes to a state where voltage is so low that a slightly unstable PSU is not able to achieve.

I've to say that upgrading to 7-1700 and new 7-3700X didn't freeze after last BIOS (>=F40) updates of that motherboard.

But installing back 5-1600 to do a small server with the same board resulted again in frequent freezes during few hours of idling. Impossible to make a server.

I resolved with that old trick to raise a bit voltage. 

The Power Supply is always the same a Tacens Anima 400W SFX.

[chrisphl]

@mechano: Would you please be so kind to describe how you adjusted the voltage?

I got a Acer Swift 315 Laptop which does not get any BIOS updates anymore I tried all max_cstate's between 1 to 6 with no luck. So I believe the theory of cpu/core voltage is too low is the cause for the freeezes...

Hope you can help me out.

Thanks in advance!

kind regards

Christian