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System hanging/fre in Linux during work or gaming

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Aefoundry View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Aefoundry Quote  Post ReplyReply Direct Link To This Post Topic: System hanging/fre in Linux during work or gaming
    Posted: 13 Jul 2019 at 3:48am
In April I built a new PC using the b450 gaming itx/ac mobo. Linux (ubuntu) started to have hanging/freezing issues during 3d work that I do or gaming. I thought it was my gpu and have gone through two amd and two nvidia cards just to make sure it wasn't the gpu. CPU runs fine and I have done Ram checks with no errors. So the last thing I could think of was the mobo and maybe a setting in the bios.

Has anyone come across this issue? Or something similar?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote xhue Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jul 2019 at 4:48am
We'll need more info on the entire build.

We'll need more specifics on the tasks being ran, OS version, kernel build/patches/etc.

You can also check dmesg and monitor the temps/voltages to see if there is a correlation to the crashes.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kschendel Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jul 2019 at 6:14am
Find "Global C States" in the BIOS and disable them, see if that doesn't help.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kschendel Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jul 2019 at 6:16am
forgot to add, when it hangs, is it a hard hang where nothing at all is responsive and you have to reset the computer? or can you ping, move mouse, anything? The hang I used to get would even freeze the Dr Debug display on the mobo, disabling the global C states thing fixed it.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Aefoundry Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jul 2019 at 1:23pm
Thanks guys for the replies as far as the build goes.

CPU - ryzen 7 2700
Gpu - Nvidia gtx 1070
Ram - 32 gb
Mobo - b450 itx/ac

Distro I am using is ubuntu studio 19.04
Kernel 5.0

As far as the hangs I will get a hard hang everyone once in a while throughout the day but most of it is my software using (blender) will hang but my other apps in the background run okay. It takes any where from 5 - 10 hangs will cause a hard hang to come out.

And what I use the computer for is content creation. 3d modeling, digital sculpting, video editing. I only installed games to test and make sure if it was the gpu or not. But I get hangs in games too.

I hope that answers all your questions. Thank you again for replying and trying to help me out with this.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Aefoundry Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jul 2019 at 2:32pm
so I did disable the global C states and the hangs are still happening tested it in a game and in 3d software, almost thought it was fixed because in the game I was able to play 1 match with out hang, it was better but not solved.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Aefoundry Quote  Post ReplyReply Direct Link To This Post Posted: 14 Jul 2019 at 1:48pm
So it might be an incompatibility issue if not a driver issue with the mobo, I said F this I'm going to reinstall windows and run test.

After updating the bios to 3.30 it resent the c state setting and it did hang on my first test. I turned it off ran the same test and seems to be fine now. Sucks that I had to go back to windows to do this but I really just need to computer running normal again.

Really enjoyed Linux and hopefully one day I can switch back over completely.

I'll report in more once I have thoroughly tested the new update and settings if any hangs happen again.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote xhue Quote  Post ReplyReply Direct Link To This Post Posted: 14 Jul 2019 at 2:11pm
It's sad that you quit Linux that quickly, without even running a dmesg command.

Linux has vastly superior troublshooting and tinkering capabilities compared to Win. With enough googling one can solve the craziest of issues.

It's also true that non-enterprise distros have hiccups with the latest, cutting-edge, non-enterprise HW. This usually gets fixed in time.

P.S. You can always dual-boot.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Aefoundry Quote  Post ReplyReply Direct Link To This Post Posted: 14 Jul 2019 at 2:19pm
Yea I know Linux is much superior, but since this machine is my main work machine I needed to get it working asap or then its costing me time and money. I loved delving and learning more about Linux. But I will be definitely going back at some point. Maybe when 19.10 is released ill jump back over and by a second drive to dual boot and fully dedicate to Linux. Trust me I loved it didn't give it up because I didn't like it. I just didn't have time to continue fiddling and learning to stabilize my build to were I needed it for work.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kschendel Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2019 at 7:52am
If you get a chance to try linux again, another tweak would be to add to the kernel boot command line: idle=nomwait processor.max_cstate=1

The simple way to do it is to edit /boot/grub2/grub.cfg and include the above two options on the linuxefi line.

My machine is a work machine as well, so I'm not entirely sure whether both incantations are needed; I'm not about to fool with it since I'm 100% stable now for days at a time. (Haven't gone longer since I end up rebooting for other reasons.)

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