BOIC version 7.18.1 (x64)

I'm finding a problem with the BOINC Manager on Linux Mint.

The Projects tab clears of all projects (there are usually 5) and the task under the Task tab also vanishes.

I have to close the BOINC Manager and restart it, then everything comes back up as normal.

Sometimes I need to restart the BOINC daemon.

Has anyone come across this before?

Does anyone know how to fix it?

It seems to be happening many times per day.

Try to install the latest version from here.

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BOINC maintainer.
For any insight, check my BOINC Development Blog.

Thanks, I'm just giving that a try now.

The problem might have been permissions issues, but after correcting those that I found, the problem did not go away.

It is a communications issue between the Boinc Manager and the daemon, but here's the thing, it was all working until 3 days ago.

Let's see if this update works.

Cheers

After updating, I had to reboot the Linux box, but it has now been running for nigh on 4 hours without an issue.

So far, so good. Still monitoring.

Well, it's been 4 days now and the problem has not reoccurred.

Thank you, Vitalii

It looks like the problem has been resolved.

I updated my version of BOINC on the 14th and since then, things appear to have been working okay for 7 days

Today, the 8th day, I have another problem that has just arisen.

I'm not sure why, but now every task from every project is registering as "Computation error"

Any idea?

Notes:
Yes, I have rebooted the system.
Yes, everything else on the system is working.
Yes, I have reset the projects.

Report this to the projects concerned.

In reply to robsmith's message of 22 Dec 2025:

Report this to the projects concerned.

And look at the task pages on their websites. There are often clues there as to why tasks have failed.

Multiple projects causing the problem?

That is highly unlikely. One, maybe, two perhaps, but five. No.

I found the cause in the end, it took me quite a while.

All of the permissions were correct.

The problem was this folder: /var/lib/boinc-client/slots/

The contents were corrupted.

I stopped BOINC, deleted the folder and then restarted BOINC.

Problem solved.

I stopped BOINC, deleted the folder and then restarted BOINC.

Problem solved.

Not seen that before. Usually, when a task completes the slots directory for that task gets deleted. I still think looking at the stderr output on the task pages may have given some hints as to what was wrong. (It depends a bit on the project. Some show much more detail than others and even within projects, different task types can show more or less helpful output.) The next question is what caused the problem within the slots directory. Most likely if one of the projects you are running caused the initial problem, there would be something on their forums. Alternatively, the cause could be something within your system that no longer applies so finding the real cause may be next to impossible.

And now I'm back to square one.

The Project tab is clearing once again and all of the Tasks vanish from the Tasks tab.

It appears that the connection between the Daemon and the BOINC Manager is dropping out.

Any ideas?

It was working fine for years before getting this problem.

After updating BOINC as per Vitalii's post, it worked fine up until yesterday.

Any ideas?

It would be great if you provide log from the BOINC client with the data around the time when the connection was lost.
It's quite hard to guess what happened.

---

BOINC maintainer.
For any insight, check my BOINC Development Blog.

Very true, Vitalii.

Where do I find the relevant logs?

I can post the logs next time the projects drop out.

Is BOINC on Linux Mint known to be glitchy?

It was okay up until recently, so it has to be something in one of the Mint updates.
My version of Mint is up-to-date.

In reply to Michael Blucher's message of 30 Dec 2025:

Very true, Vitalii.

Where do I find the relevant logs?

I can post the logs next time the projects drop out.

Is BOINC on Linux Mint known to be glitchy?

It was okay up until recently, so it has to be something in one of the Mint updates.
My version of Mint is up-to-date.

I’m running Mint 22.2 and Boinc 7.24.1 with no problems - current uptime is about 3 weeks and no failed WUs.

In reply to Michael Blucher's message of 30 Dec 2025:

Very true, Vitalii.

Where do I find the relevant logs?

On Linux you can find this logs by running 'journalctl' command

Is BOINC on Linux Mint known to be glitchy?

I don't run Mint and have no information about stability of BOINC on it, but I haven't received any issues that are specific for this OS only.

---

BOINC maintainer.
For any insight, check my BOINC Development Blog.

Another source of information is tools>event log and look at the messages around when problems occur.

In reply to Dave's message of 30 Dec 2025:

Another source of information is tools>event log and look at the messages around when problems occur.

Event log shows information about current session only, so if the client was killed/crashed for some reason - you will not be able to find any info about the client instance that was running previously.

---

BOINC maintainer.
For any insight, check my BOINC Development Blog.

In reply to Dave's message of 24 Dec 2025:

I stopped BOINC, deleted the folder and then restarted BOINC.

Problem solved.

Not seen that before. Usually, when a task completes the slots directory for that task gets deleted. .

I'd like to know whether anyone else observes this quoted behavior about slot deletion when tasks are finished. Unless the original poster was stating the "contents" of the slots are cleared, I am confused.

For every host of mine, I have basically the same number of slot folders as the number of cores of the host plus 1 or 2 extra or a couple less on the Epycs plus some extra slots depending on how many concurrent gpu tasks I'm running.

For a 32 core Ryzen cpu, I have 32-33 slot folders. For 128 core Epyc cpu I have 120-124 slot folders. For a 4 or 6 core Jetson Nano I have 6-8 slot folders.

Slot count follows the percentage of cores allowed to be used by the client cpu usage factor.

The slot contents get emptied when a task finishes, but does not get deleted, just stays empty until it gets reoccupied by another task.

But I have never seen the slot count ever decrease by a physical slot deletion unless I manually intervene and delete one.

The BOINC manager finally failed again, but I am unable to get the event logs.

The Projects and the Task tabs are empty, the Tools - Event Log option is greyed out, and I can't click it.
Worse still, whatever went wrong has locked up the laptop.
I've had to reboot it.

This isn't failing as much as it was on the previous version, but it does seem to be getting worse.

How can I access the event logs through the CLI?

stdoutdae.txt in /var/lib/boinc or C:\ProgramData\BOINC