Issue #2653 has been updated by swildner. Status changed from New to Closed
No reaction from OP, so closing it, as I believe that this was tracked down and fixed by Matt. ---------------------------------------- Bug #2653: Timer DELAY hangs boot on Lenovo S10 Intel Atom N270 with acpi enabled http://bugs.dragonflybsd.org/issues/2653#change-12907 * Author: davshao * Status: Closed * Priority: Normal * Assignee: * Category: * Target version: ---------------------------------------- On a i386 Lenovo S10 netbook with Intel Atom N270 and acpi enabled, boot hangs after: acpi0.nexus0.root0 acpi0: <LENOVO CB-01> [tentative] on motherboard ACPI: All ACPI Tables successfully acquired ACPI FADT: SCI testing interrupt mode ... ACPI FADT: SCI testing level/high IOAPIC: irq 9, gsi 9 edge/high -> level/high Brute force debugging with kprintf shows that commenting out the DELAY(100 * 1000); in function acpi_sci_test() of file sys/platform/pc32/acpica/acpi_fadt.c enables boot to at least progress to the end of function call acpi_sci_config(); in function AcpiOsInstallInterruptHandler() in file sys/dev/acpica/Osd/OsdInterrupt.c (after which at some point booting hangs again). I can only speculate this may have some relation to the thread "Time keeping Issues with the low-resolution TSC timecounter" on the FreeBSD current mailing list around June 2011. For example: http://lists.freebsd.org/pipermail/freebsd-current/2011-June/025319.html "Somewhere from an Intel manual, I think I read TSC stops when DPSLP# pin is asserted for Core/Core2/Atom processors and I guess that means entering C3 stops TSC. :-(" Attached is a dmesg from an acpi-disabled successful boot of the machine. ---Files-------------------------------- lenovo_s10_dmesg.txt (36.5 KB) -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: http://bugs.dragonflybsd.org/my/account
