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I'm experiencing random freezes while using my Ubuntu installation in a MSI GF75 computer, with Windows 10 in dual boot. This kind of freezes avoids me to use any key or the mouse, and stops the sound, forcing me to hard reboot my computer, since it doesn't unfreeze after a long period of time. There isn't likely a pattern for this to occur, since I was doing different things in different freezes. I tried to check the output of

journalctl  -b -1 -xe

just after rebooting, but I don't find anything suspicious. The computer comes with a NVIDIA GeForce RTX 2060, which I think has the latest drivers since I used

sudo ubuntu-drivers autoinstall

to keep them updated. Also, it doesn't seem to be a problem with temperature, since sensors always give me a temperature below 40 celsius, and this problem doesn't happen in Windows (which is more exigent), which makes me think that is a software problem related with Ubuntu. By the same reason, I don't think that is a problem with the RAM memory or with SWAP, but I could be wrong. If you need the output of any command let me know. Thank you for your help!

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  • what drivers are you using for the Nvidia card? Is it nouveau or the proprietary version? – NinePlusTenEqualsTwentyOne Nov 27 '20 at 3:53
  • you can check in software & updates > Additional drivers – NinePlusTenEqualsTwentyOne Nov 27 '20 at 3:53
  • @NinePlusTenEqualsTwentyOne exactly I'm using the NVIDIA driver metapackage from nvidia-driver-455, propietary version. – Julián Nov 27 '20 at 4:08
  • don't hard reboot or it might corrupt data. Press the SysRq key (usually PrtScn) together with REISUB in turn. Refer to (en.wikipedia.org/wiki/Magic_SysRq_key) for more details – NinePlusTenEqualsTwentyOne Nov 27 '20 at 4:26
  • Thanks for the recommendation. I will have it in mind when my computer freezes again. – Julián Nov 27 '20 at 4:38
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Possible cause for this bug: https://forums.developer.nvidia.com/t/bug-report-455-23-04-kernel-panic-due-to-null-pointer-dereference/155506

Possibly fixed by driver 460.56. I have not had the chance to try it yet (I'm still at 460.39 with Ubuntu 20.04, RTX 3070), and I get random freezes too.

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  • Yes, this seems to be the reason of random freezes. I'll try it and see if it works. Thank you for the information. – Julián Apr 28 at 3:10

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