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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1982965
and then change the status of the bug to 'Confirmed'.
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This change has been made by an automated script, maintained by the
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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1982965
Title:
Random crashes related to CPU virtualization - have a sure way to
replicate the crashes
Status in linux package in Ubuntu:
Incomplete
Bug description:
Description: Hardware configurations:
CPU: AMD Ryzen 7 5700G with Radeon Graphics
Motherboard: Gigabyte B550M D3H
OS: Linux Mint 20.3 / with a number of Ubuntu kernels from 5.11, 5.13,
and 5.15
Due to the CPU and motherboard, have to use non-packaged kernels for
both graphics and network interface to work.
Once the CPU virtualization is turned-on, system starts to crash
randomly. For Gigabyte motherboard CPU virtualization is called SVM
mode. All crashes occurred under CPU SVM mode is enabled.
Crashes leave little information to pinpoint the exact process that
caused the problem.
After almost three months of bad experiences, tried to upgrade kernel
from 5.11 to 5.15, none of them helped. The packaged kernel 5.4
doesn't have proper drivers for both the graphics and network
interfaces.
Methods of replicating the crashes:
1. Turn on the SVM mode in BIOS.
2. Execute glmark2 to benchmark the graphic card performance.
3. System crashes before the benchmark test is done.
The syslogs doesn't show any meaningful info for the crashes.
https://drive.google.com/drive/folders/1cYbQPdfPSC_6A879xBWRs1jIY7R5ylMU?usp=sharing
has all of the info gathered in the painful experiences.
Once the SVM mode on the motherboard is turned off (disabled), I no
longer experience the same kind of random crashes, and glmark2 can
finish without any issues.
That's all I can report here. If you need any further information.
Please feel free to let me know.
Thanks for your attentions.
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