Date: Mon, 3 Jul 2023 18:43:11 -0300 From: Mitchell Horne <mhorne@freebsd.org> To: Patrick McMunn <doctorwhoguy@gmail.com>, freebsd-current@freebsd.org Subject: Re: System lockups on 14-current with Plasma 5 Message-ID: <e41c673c-4124-3e77-f652-efcccb2977f4@freebsd.org> In-Reply-To: <CAKS%2Bcu2_eUG8hTkUzZ3QgeqCf-C3p%2BxVDd2M5K1ZyNKyOhv2qw@mail.gmail.com> References: <CAKS%2Bcu2_eUG8hTkUzZ3QgeqCf-C3p%2BxVDd2M5K1ZyNKyOhv2qw@mail.gmail.com>
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On 7/3/23 18:20, Patrick McMunn wrote: > I was just wondering if anyone else has experienced random freezes where > everything except the mouse cursor becomes completely unresponsive. > > This began when I would come to my computer in the morning and find the > screen black and the system in sleep mode. It would not wake up to > keypresses or mouse movement. So I disabled power management in Plasma > 5. This still happened after disabling power management, so I disabled > the screensaver. That's when I would come to find my computer in the > morning with the screen still on, but as soon as I would click on > anything, everything but the cursor would freeze. At first, I thought it > would happen only after being idle a long time. But then it began to > happen while actively using the system after even a short time like less > than an hour. It progressively became more frequent over a few days > until it would happen immediately upon logging into Plasma 5. > > I originally installed 14-current onto a spare laptop hard drive that I > installed on a secondary SATA port on my desktop just so I could test > it. But after these issues occurred, I suspected a faulty hard drive and > decided to install 14-current onto my main hard drive in a separate > partition alongside Windows 10 and Gentoo. I went ahead and disabled > sleep power management and the screensaver on the new installation. But > I soon began to experience random lockups during use. > > I installed Gnome 3, LXQT, and Cinnamon desktops to try as alternatives. > Maybe I haven't tested enough, but I have yet to experience any lockups > with these other desktop environments. > > I had previously run Plasma 5 from quarterly on 13.2-release without any > lockups. So maybe it's an issue with Plasma 5 from the latest repo. It's > hard to know since there apparently is no quarterly repo available for > 14-current. So it's unclear whether the issue is with the latest Plasma > 5 or some compatibility issue with Plasma 5 on 14-current that I did not > experience on 13.2-release. Hi, I experienced some similar symptoms a while back on -current with KDE. After some investigation I found that the system was panicking due to some failed debug assertion triggered by the nvidia graphics driver. As a result, the system would drop to the debugger, but was unable to switch virtual terminals, so it appeared to hang. My solution was just to start running the GENERIC-NODEBUG kernel instead. Does the system respond to network pings after the lock-up occurs? If not then perhaps you are experiencing this type of silent panic. You can set the debug.debugger_on_panic sysctl value to 0, which should result in an immediate reboot+kernel dump when such a panic occurs. Hope it helps. Mitchell
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