[DragonFlyBSD - Bug #2424] (Closed) usched_dfly may cause Lenovo S10 to hang during boot

Alex Hornung via Redmine bugtracker-admin at leaf.dragonflybsd.org
Tue Oct 30 11:42:58 PDT 2012

Issue #2424 has been updated by Alex Hornung.

Status changed from New to Closed

Bug #2424: usched_dfly may cause Lenovo S10 to hang during boot

Author: David Shao
Status: Closed
Priority: Normal
Target version: 

A commit between, inclusive
e28d8b158f5ddefb84fa6bead323f0640cff607e add usched_dfly algorith, set as default for now
060035eb31c36c4eb8a9247ff6954ca2501f73b0 kernel/usched_dfly: Small UP compilation fix.
causes a Lenovo S10 netbook, (ICH7, 945GME, i386 single core with hyperthreading) with acpi disabled to freeze during the boot process between the lines (boot_verbose=YES):

crypto: <crypto core>
Pentium Pro MTRR support enabled
md0: invalid primary partition table: no magic
Math emulator present
hpt27xx: RocketRAID 27xx controller driver v1.0 (Sep 18 2012 21:47:39)
hptrr: RocketRAID 17xx/2xxx SATA controller driver v1.2


IOAPIC: rman cpu0 0 - 1
IOAPIC: rman cpu0 3 - 95
IOAPIC: rman cpu0 97 - 191
IOAPIC: rman cpu1 24 - 95
IOAPIC: rman cpu1 97 - 191
npx0: <math processor> [tentative] on motherboard
npx0: INT 16 interface
Using XMM optimized bcopy/copyin/copyout
npx0: <math processor> [attached!] on motherboard
cryptosoft0: <software crypto> [tentative] on motherboard
crypto: assign cryptosoft0 driver id 0, flags 234881024

Attached is a complete boot_verbose=YES dmesg of a system with a working kernel.  The boot hang may be somewhat intermittent but does occur often, perhaps at least 3/4 of boot attempts.
I have tried updates through
4550c3e09a7ad95923d423a3c38cdd5a505d9b57 Add usched_dfly algorith, set as default for now (6)

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