Le samedi 26 avril 2025, 19:57:12 heure d’été d’Europe centrale Rongrong a écrit : > Hi Philippe, > > I somehow met the same issue before and confirmed that kioworker was > unfortunately stuck while generating the thumbnail of a file. > > `sudo strace -p <PID>` and `lsof -p <PID>` may help you find the file > that causes the issue. You can then work around the bug by disabling > thumbnail generation for the affected MIME type. > > In my case, it was a DOCX file. > > $ sudo strace -p <PID> > lseek(11, 5557, SEEK_SET) = 5557 > lseek(11, 5557, SEEK_SET) = 5557 > lseek(11, 5557, SEEK_SET) = 5557 > [...] > $ lsof -p <PID> > kioworker <PID> rongrong 11r REG <DEVICE> > <SIZE/OFF> <NODE> /path/to/a.docx > > It is impossible for me to provide a reproducer to the devs, as the > file itself is confidential. Thus, I've never reported the issue. If > you find you are facing the same issue and if the file is not > confidential, please report it to the KDE devs. > > Rong Thank you for the method you provide to detect the cause of Kioworker's out-of-control behavior, which causes processor overheating. In my case, it worked very well; the culprit was a corrupted .pps file. Deleting this file in the same session didn't make the problem go away, but upon rebooting, everything returned to normal. I don't understand why the KDE system is interested in this file if it existed in my home directory and I hadn't accessed it for a long time. Should I file a bug report? If so, I don't know how to write one? Is it a Debian or KDE bug? The offending .pps file is deleted; to find it, I'd have to look for it in my backups. I also recently had a problem with clamav (clamd), which also used a processor at 100%, thus increasing the processor temperature. A reboot calmed everything down. > > On Sat, 2025-04-26 at 12:58 +0200, MERLIN Philippe wrote: > > Hello, > > For some time now, I've been having problems with my Debian SID AMD64. > > I've > > already reported it to the list about the screen blocking and the mouse > > becoming inoperative. The users recommended certain tests to diagnose the > > cause of the problem. I ran memtest86 overnight without any problems. > > However, upon further investigation, I noticed that the processor > > temperatures were very high, approaching 100°C (96.97°C). The fans were > > operating normally. I thought it was a thermal paste problem. A > > technician ran some tests without Linux, and the processor temperatures > > were normal, even under load, at a maximum of 76°C. He suggested the > > problem might be with an application. I launched: *top* and* *I noticed > > that a kioworker process was constantly using 100% CPU. Why? Is this the > > culprit? Where should I look? Kioworker seems to be a KDE process, so > > I'll send an email to the KDE list asking for help. > > Thanks in advance for your contributions. > > Philippe Merlin
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