On Mon Oct 27, 2025 at 8:51 AM UTC, Piotr K. Isajew wrote: >>Synopsis: > System freezes with high CPU usage when using multimedia >>Category: > kernel / system >>Environment: > System : OpenBSD 7.8 > Details : OpenBSD 7.8 (GENERIC.MP) #54: Sun Oct 12 12:58:11 MDT 2025 > > [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP > > Architecture: OpenBSD.amd64 > Machine : amd64 >>Description: > I run OpenBSD on several machines and this problem is specific to > one of them. I had this problem before, I think in 7.6 times, > then it was gone in recent 7.7 and now it is back again. > > When using multimedia-intensive applications (i.e. ffplay, > iridium browser on a video-rich page) there are situations when > the CPU fan starts rotating on high speed, screen freezes, > keyboard, mouse and network interfaces are unresponsive. > > System doesn't crash, so there is no crash report I could > attach. Logs (with default syslog.conf) do not provide any > relevant information. > >>How-To-Repeat: > The problem is specific to this machine. It occurs frequently > enough to make this machine unusable for most activities but text > editing, so I can reproduce it if necessary (i.e. with some > custom kernel options that could give more insights on what is > happening).
Hi Piotr, I am seeing similar crashes, albeit not with multimedia. I have a non-graphical system, with dmesg attached, that appeared stable with 7.7. I upgraded to 7.8, and now it crashes in several hours, to two days. There is no video output or useful logs. The most recent crash did have /bsd: smr: dispatch took 3.520000s right before the crash. I am assuming it's unrelated, but maybe not? The system is running a Bitcoin daemon and a Monero daemon. I now have it running only the Bitcoin daemon to see if it will crash with just it. -Henrich
