I've been running Ubuntu LTS for quite some time on top of my Windows 10 host without any issues or major changes. After reinstalling from scratch to do a cleanup it randomly crashes with the mentioned error, i.e. suddenly goes into guru mediation. Last time it happened almost right after boot up when starting Firefox, but usually it simply comes at some time. Any further idea how to troubleshoot this?
Thx
Andreas
Ubuntu 20.04 randomly crashes with "emR3Debug: rc=VERR_IEM_INSTR_NOT_IMPLEMENTED"
Ubuntu 20.04 randomly crashes with "emR3Debug: rc=VERR_IEM_INSTR_NOT_IMPLEMENTED"
Last edited by AnKe on 1. Sep 2021, 07:39, edited 1 time in total.
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Re: Ubuntu 20.04 randomly crashes with "emR3Debug: rc=VERR_IEM_INSTR_NOT_IMPLEMENTED"
This error seems to happen when Hyper-V is enabled, as it is on your host. See HMR3Init: Attempting fall back to NEM (Hyper-V is active).
Re: Ubuntu 20.04 randomly crashes with "emR3Debug: rc=VERR_IEM_INSTR_NOT_IMPLEMENTED"
Thanks a lot! Disabling Hyper-V as explained with bcdedit and dism did the trick. Meanwhile I realized that my guests became pretty slow / unresponsive. I suspect Hyper-V might have been enabled some while ago when playing with the upgrade from WSL to WSL2. I'm not actually using this one, but obviously it has changed also something with Hyper-V.
Andreas
Andreas
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Re: Ubuntu 20.04 randomly crashes with "emR3Debug: rc=VERR_IEM_INSTR_NOT_IMPLEMENTED"
Yep, that did it. WSL does not need Hyper-V, but WSL2 does.AnKe wrote:upgrade from WSL to WSL2
Glad you're up and running!