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Asked: 2024-09-28T03:27:29+05:30 In:

I recently experienced an issue where my Ubuntu 22.04 real-time system rebooted unexpectedly. Has anyone encountered a similar problem, or can anyone suggest potential causes and solutions for this behavior?

anonymous user

I’ve been diving deep into using Ubuntu 22.04 for a real-time application I’m working on, but I’ve hit a really frustrating snag that I can’t seem to shake off. The other day, my system just rebooted out of the blue while I was in the middle of some important tasks. I can’t even tell you how annoying it was to lose all that progress! Has anyone else experienced a similar surprise reboot with their Ubuntu 22.04 system?

I’ve tried to investigate what might be causing this, but it feels like I’m hitting a wall. At first, I thought it could be a hardware issue since my setup is a bit of a frankenstein with mismatched components. But then I remembered I’ve checked my RAM and everything else seems to be fitting together nicely. I even ran some hardware tests, and they all came back clean. So now I’m leaning more towards software side issues, but I’m not sure where to look.

Could it be a specific setting in the kernel parameters? Or maybe something to do with power management settings? I’ve heard that Real-Time kernels can sometimes behave unexpectedly with certain configurations. Maybe it’s an issue with the drivers? I’m really just grasping at straws here.

If you’ve faced this kind of problem, how did you troubleshoot it? Are there specific logs I should check to shed some light on what went wrong? Honestly, I think it’s a bit over my head at this point, and I’m kind of feeling lost. If you have any tips, personal experiences, or even a direction to point me in, I would really appreciate it! It’s such a bummer to be interrupted like this, especially when I’m trying to get things done. Let’s see if anyone can help crack this mystery!

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    2 Answers

    1. anonymous user

      It sounds really frustrating to have your system reboot unexpectedly like that! I haven’t experienced the exact same issue with Ubuntu 22.04, but I can relate to the annoyance of losing work because of sudden reboots.

      Since you mentioned that your setup has mismatched components, that could definitely be part of the problem. Maybe some driver issues are causing conflicts, especially if you’re using a Real-Time kernel. Have you checked if your drivers are updated? Sometimes, proprietary drivers can behave unpredictably, so it might be worth switching to open-source ones if you haven’t already.

      Regarding the logs, definitely check out the /var/log/syslog and /var/log/kern.log files. They might give you some clues about what happened right before the reboot. You can view these logs by using the command less /var/log/syslog in the terminal, which can really help you spot any errors or warnings.

      As for the kernel parameters or power management settings, you might want to look into the GRUB configuration. Sometimes adding parameters like noapic or acpi=off can help if there’s a power management issue causing unexpected behavior. Just remember to take note of any original configurations so you can revert back if needed!

      Lastly, if all else fails, consider testing with a different kernel version or even creating a separate partition with a fresh install of Ubuntu to see if the problem persists. That way, you can isolate whether it’s a software issue related to your current setup.

      Hope you can crack this mystery soon! It’s tough to keep your focus when issues like these pop up. Best of luck!

    2. anonymous user

      Experiencing unexpected system reboots on Ubuntu 22.04 can be quite frustrating, especially when you’re in the thick of developing a real-time application. It could stem from a variety of factors, including potential conflicts with kernel parameters and power management settings. Since you’ve confirmed your hardware isn’t the culprit, it might be worth investigating whether your system is configured to handle real-time processes properly. Consider checking the settings in your boot configuration (such as GRUB) to ensure the kernel parameters are suited for real-time operations. This includes verifying if the ‘nosplash’ parameter is active, which can help see boot messages that may reveal any underlying issues.

      To gain deeper insights into the problem, the first place you should look is the system logs. Start by examining the /var/log/syslog and /var/log/kern.log files. These logs may contain vital information that could point you in the right direction leading up to the reboot event. Look specifically for warnings or errors that occur immediately before the system crashes. Additionally, consider using tools like dmesg to review kernel messages. If you’re concerned about power management, check if the tlp (or a similar tool) is misconfigured. Lastly, if all else fails, try running a live environment with a different kernel version temporarily to see if the issue persists – it could pinpoint whether you’re dealing with a software-specific issue.

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