We decided to get 3 Ryzen 2700x machines for testing at work, and we are bitterly disappointed that they randomly freeze in Linux.
The only message I get in journalctl is "rcu_sched detected stalls blablabla", and sometimes I don't get even that. I test the system by compiling QEMU with -j16 in a loop (so it has some time of load and some time of idle). Freezes usually occur after several hours. Sometimes you can use pc for a while (like, open a terminal, or browser, move a mouse), but then it freezes completely. Configuration: 2700x 4*16gb Ram. It is rated at 3000MHz, but I set them to 2133, just to be sure ASRock B450 Pro4 at one pc and ASUS X470 Pro in two others. Samsung 860evo 250Gb Aerocool KCAS 650 80+ Gold PSU GT1030 I've tried using one machine on B450 Pro4 in Windows, and it's already at 48 hours of uptime, while Linux will freeze after 1-5 hours. dmesg, cpuinfo and .config are in an attachment. Things I've tried: - Typical Current Idle - idle=nomwait kernel parameter - recompile kernel and add rcu_nocbs=0-15, kernel versions 4.15.18 and 4.20 - zenstates --disable-c6 - processor.max_cstate=3 (not even 5, just to be sure) - set SoC at 1.1v instead of default 0.8-0.9 - another PSU (800w 80+ platinum) - update bios to latest version (December 2018) ** Attachment added: "dmesg, cpuinfo and .config" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1690085/+attachment/5231076/+files/logs.zip -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1690085 Title: Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1690085/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
