Date: Tue, 08 Apr 2025 22:01:33 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 285867] 14.2-RELEASE kernel hangs on Thinkpad T400 Message-ID: <bug-285867-227-K4wOWIIU0x@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-285867-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285867 --- Comment #9 from Tomoaki AOKI <junchoon@dec.sakura.ne.jp> --- Not sure about T400, but smells ACPI problems in UEFI firmware / BIOS. If I recall correctly, currently FreeBSD depends on ACPI to detect CPU spec including (S)MP topology. And maybe unlikely, but if your firmware / BIOS allows selecting MPS (Multi Processor Spec.) version, changing it to something others (usually 1.1 and 1.4 but possibly something more) could resolve the issue (quite old experience on other OS, if I recall correctly). Lastly, if you've not done, what happenes if you add acpi_ibm_load="YES" in your /boot/loader.conf and reboot? Any differences? -- You are receiving this mail because: You are the assignee for the bug.home | help
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