Date: Thu, 13 Dec 2018 11:56:16 +0100 From: Sascha Klauder <sascha@hosting.ntag.de> To: freebsd-stable@freebsd.org Subject: boot hang with certain Phenom II cpu models Message-ID: <20181213105616.GA27140@hosting.ntag.de>
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Hi all, I've recently upgraded my Athlon II based home box (happily running FreeBSD for several years) to a Phenom II X4 960T CPU. Now, kernel (11.2) hangs in early hardware initialization. Mainboard is a nForce 720 based Gigabyte GA-M720-US3 rev 1.0, BIOS is latest and the CPU is on Gigabyte's CPU support list for this board. A parallel Windows 7 installation continues to work flawlessly and the system is stable running prime95. Memtest86 reports no errors. I've tried several other OS boot media (DragonFly 5.4, OpenBSD 6.4, Linux 4.9) -- all boot fine with no problems (see dmesg output linked below). I've found two very similiar problem reports on the FreeBSD forums. Both involve Phenom II cpu's and nForce-based mainboards, so I think we're missing some BIOS/ACPI quirk here. https://forums.freebsd.org/threads/10-1-installer-wont-boot-past-acpi.50015/ https://forums.freebsd.org/threads/boot-hangs-after-cpu-upgrade.64410/ So far, I tried (unsuccessfully) to disable obvious ACPI sub- systems (cpu, mwait, quirks) and debug settings (acpi.cpu_unordered, acpi.max_threads). Anyone got a hint where to look or debug this further? kernel boot messages (obtained from 10.4 amd64): https://lair.griffinsplace.de/~sascha/phenom/dmesg-freeze-FreeBSD10.txt boot messages with the previous Athlon II cpu in this system: https://lair.griffinsplace.de/~sascha/phenom/dmesg-FreeBSD-AthlonII.txt boot messages from DFly, OpenBSD and Linux: https://lair.griffinsplace.de/~sascha/phenom/ Cheers, -sascha
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