小弟剛剛裝了FB5.2.1R，啟動時卻出現「SCB Timed out」的提示 　　小弟剛剛裝了FB5.2.1R，啟動到「Waiting 15 seconds for SCSI devices to settle」時卻出現了「SCB Timed out」的提示，等待一段時間（遠大於15秒）後輸出大量信息（見下面 dmesg 輸出的紅色部分），但是能夠正常進入系統，執行各項操作也沒問題，只是偶爾在大量磁盤操作時出現「ahc0: Timedout SCB already complete. Interrupts may not be functioning.」提示。雖然現在系統可以使用，但我搞不明白問什麼會出現這個問題，另外會不會將來造成什麼影響，還請各位前輩多多幫忙，謝謝！ 　　注1：我的機器是很老的IBM Server 320，配置如下：CPU - Pentium 166 x 2，內存 - 160M (64M x 2 + 16M x 2)，SCSI卡 - Adaptec 2940W (雙通道)，硬盤 - IBM DPSS-318350N (18G)。 　　注2：安裝過程中出現過一個小故障，開始SCSI卡不能正確連接（可以識別出來，但提示超時錯誤）這塊硬盤，我到網上查找資料，按相關提示在SCSI BIOS中開啟了「Send Start Unit Command」選項後SCSI卡正確連接上了這塊硬盤；後來我又試著關閉了這個選項，並打開了「BIOS Support for Int13Extensions」選項，SCSI卡也能正確連接這塊硬盤。 dmesg 輸出： [quote]Copyright (c) 1992-2004 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994         The Regents of the University of California. All rights reserved. FreeBSD 5.2.1-RELEASE #0: Mon Feb 23 20:45:55 GMT 2004     root@wv1u.btc.adaptec.com:/usr/obj/usr/src/sys/GENERIC Preloaded elf kernel "/boot/kernel/kernel" at 0xc09e3000. MPTable: <INTEL    430 NX EISA >; Timecounter "i8254" frequency 1193182 Hz quality 0 CPU: Pentium/P54C (167.05-MHz 586-class CPU)   Origin = "GenuineIntel"  Id = 0x52c  Stepping = 12   Features=0x3bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,APIC>; real memory  = 167772160 (160 MB) avail memory = 153354240 (146 MB) FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs cpu0 (BSP): APIC ID:  0 cpu1 (AP): APIC ID:  1 Intel Pentium detected, installing workaround for F00F bug ioapic0: Assuming intbase of 0 ioapic0 <Version 1.1>; irqs 0-15 on motherboard npx0: [FAST] npx0: <math processor>; on motherboard npx0: INT 16 interface pcibios: BIOS version 2.10 pcib0: <Host to PCI bridge>; at pcibus 0 on motherboard pci0: <PCI bus>; on pcib0 eisab0: <PCI-EISA bridge>; at device 2.0 on pci0 eisa0: <EISA bus>; on eisab0 mainboard0: <MIC0054 (System Board)>; on eisa0 slot 0 isa0: <ISA bus>; on eisab0 ahc0: <Adaptec 2940 SCSI adapter>; port 0xf800-0xf8ff mem 0xfdfff000-0xfdffffff irq 11 at device 13.0 on pci0 aic7870: Wide Channel A, SCSI Id=7, 16/253 SCBs pci0: <simple comms, UART>; at device 15.0 (no driver attached) orm0: <Option ROMs>; at iomem 0xc8000-0xcb7ff,0xc0000-0xc7fff on isa0 pmtimer0 on isa0 ata0 at port 0x3f6,0x1f0-0x1f7 irq 14 on isa0 ata0: [MPSAFE] ata1 at port 0x376,0x170-0x177 irq 15 on isa0 ata1: [MPSAFE] atkbdc0: <Keyboard controller (i8042)>; at port 0x64,0x60 on isa0 atkbd0: <AT Keyboard>; flags 0x1 irq 1 on atkbdc0 kbd0 at atkbd0 psm0: <PS/2 Mouse>; irq 12 on atkbdc0 psm0: model Generic PS/2 mouse, device ID 0 fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)>; at port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0 fdc0: FIFO enabled, 8 bytes threshold fd0: <1440-KB 3.5" drive>; on fdc0 drive 0 ppc0: <Parallel port>; at port 0x378-0x37f irq 7 on isa0 ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode ppbus0: <Parallel port bus>; on ppc0 ppbus0: IEEE1284 device found Probing for PnP devices on ppbus0: plip0: <PLIP network interface>; on ppbus0 lpt0: <Printer>; on ppbus0 lpt0: Interrupt-driven port ppi0: <Parallel I/O>; on ppbus0 sc0: <System console>; at flags 0x100 on isa0 sc0: VGA <16 virtual consoles, flags=0x300>; sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 16550A sio1 at port 0x2f8-0x2ff irq 3 on isa0 sio1: type 16550A vga0: <Generic ISA VGA>; at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0 ed1: <ACCTON EN166X MPX2 ETHERNET CARD>; at port 0x200-0x21f irq 5 on isa0 ed1: address 00:00:e8:53:8a:b2, type NE2000 (16 bit) unknown: <16550 compatible COM device>; can't assign resources (port) unknown: <16550 compatible COM device>; can't assign resources (port) unknown: <LPT printer port>; can't assign resources (port) unknown: <Floppy Controller>; can't assign resources (port) unknown: <IBM Enhanced (101/102-key) KC>; can't assign resources (port) unknown: <Microsoft PS/2 Mouse>; can't assign resources (irq) Timecounters tick every 10.000 msec Waiting 15 seconds for SCSI devices to settle [color=red](probe0:ahc0:0:0:0): SCB 0x5 - timed out >;>;>;>;>;>;>;>;>;>;>;>;>;>;>;>;>;>; Dump Card State Begins <<<<<<<<<<<<<<<<< ahc0: Dumping Card State in Message-out phase, at SEQADDR 0x16c Card was paused ACCUM = 0xa0, SINDEX = 0x61, DINDEX = 0xc0, ARG_2 = 0x1 HCNT = 0x0 SCBPTR = 0x0 SCSISIGI[0xb6]:(REQI|BSYI|ATNI|MSGI|CDI) ERROR[0x0] SCSIBUSL[0x1] LASTPHASE[0xa0]:(MSGI|CDI) SCSISEQ[0x12]:(ENAUTOATNP|ENRSELI) SBLKCTL[0x2]:(SELWIDE) SCSIRATE[0x0] SEQCTL[0x10]:(FASTMODE) SEQ_FLAGS[0x40]:(NO_CDB_SENT) SSTAT0[0x7]:(DMADONE|SPIORDY|SDONE) SSTAT1[0x3]:(REQINIT|PHASECHG) SSTAT2[0x0] SSTAT3[0x0] SIMODE0[0x0] SIMODE1[0xac]:(ENSCSIPERR|ENBUSFREE|ENSCSIRST|ENSELTIMO) SXFRCTL0[0x88]:(SPIOEN|DFON) DFCNTRL[0x4]:(DIRECTION) DFSTATUS[0x6d]:(FIFOEMP|DFTHRESH|HDONE|FIFOQWDEMP|DFCACHETH) STACK: 0xe1 0x0 0x166 0x196 SCB count = 20 Kernel NEXTQSCB = 3 Card NEXTQSCB = 14 QINFIFO entries: 14 Waiting Queue entries: Disconnected Queue entries: QOUTFIFO entries: Sequencer Free SCB List: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sequencer SCB Info:   0 SCB_CONTROL[0x40]:(DISCENB) SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0x5]   1 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   2 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   3 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   4 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   5 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   6 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   7 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   8 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   9 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 10 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 11 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 12 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 13 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 14 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 15 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] Pending list: 14 SCB_CONTROL[0x50]:(MK_MESSAGE|DISCENB) SCB_SCSIID[0x37] SCB_LUN[0x0]   5 SCB_CONTROL[0x40]:(DISCENB) SCB_SCSIID[0x7] SCB_LUN[0x0] Kernel Free SCB list: 15 16 17 18 19 0 1 2 4 6 7 8 9 13 12 11 10 Untagged Q(0): 5 Untagged Q(3): 14 >;>;>;>;>;>;>;>;>;>;>;>;>;>;>;>;>; (probe0:ahc0:0:0:0): BDR message in message buffer (probe0:ahc0:0:0:0): no longer in timeout, status = 300 (probe3:ahc0:0:3:0): SCB 0xe - timed out >;>;>;>;>;>;>;>;>;>;>;>;>;>;>;>;>;>; Dump Card State Begins <<<<<<<<<<<<<<<<< ahc0: Dumping Card State in Message-out phase, at SEQADDR 0x16c Card was paused ACCUM = 0xa0, SINDEX = 0x61, DINDEX = 0x8c, ARG_2 = 0x0 HCNT = 0x0 SCBPTR = 0x1 SCSISIGI[0xb6]:(REQI|BSYI|ATNI|MSGI|CDI) ERROR[0x0] SCSIBUSL[0x80] LASTPHASE[0xa0]:(MSGI|CDI) SCSISEQ[0x12]:(ENAUTOATNP|ENRSELI) SBLKCTL[0x2]:(SELWIDE) SCSIRATE[0x4f]:(ENABLE_CRC|SXFR_ULTRA2) SEQCTL[0x10]:(FASTMODE) SEQ_FLAGS[0x40]:(NO_CDB_SENT) SSTAT0[0x7]:(DMADONE|SPIORDY|SDONE) SSTAT1[0x3]:(REQINIT|PHASECHG) SSTAT2[0x0] SSTAT3[0x0] SIMODE0[0x0] SIMODE1[0xac]:(ENSCSIPERR|ENBUSFREE|ENSCSIRST|ENSELTIMO) SXFRCTL0[0x88]:(SPIOEN|DFON) DFCNTRL[0x0] DFSTATUS[0x29]:(FIFOEMP|HDONE|FIFOQWDEMP) STACK: 0xe1 0x0 0x166 0x109 SCB count = 20 Kernel NEXTQSCB = 5 Card NEXTQSCB = 3 QINFIFO entries: 3 Waiting Queue entries: Disconnected Queue entries: QOUTFIFO entries: Sequencer Free SCB List: 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sequencer SCB Info:   0 SCB_CONTROL[0xc0]:(DISCENB|TARGET_SCB) SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff]   1 SCB_CONTROL[0x0] SCB_SCSIID[0x37] SCB_LUN[0x0] SCB_TAG[0xe]   2 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   3 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   4 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   5 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   6 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   7 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   8 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff]   9 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 10 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 11 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 12 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 13 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 14 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 15 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] Pending list:   3 SCB_CONTROL[0x40]:(DISCENB) SCB_SCSIID[0x7] SCB_LUN[0x1] 14 SCB_CONTROL[0x0] SCB_SCSIID[0x37] SCB_LUN[0x0] Kernel Free SCB list: 15 16 17 18 19 0 1 2 4 6 7 8 9 13 12 11 10 Untagged Q(0): 3 Untagged Q(3): 14 >;>;>;>;>;>;>;>;>;>;>;>;>;>;>;>;>; sg[0] - Addr 0x201040 : Length 32 (probe3:ahc0:0:3:0): BDR message in message buffer (probe3:ahc0:0:3:0): no longer in timeout, status = 34c[/color] GEOM: create disk cd0 dp=0xc237a600 GEOM: create disk da0 dp=0xc23e2850 SMP: AP CPU #1 Launched! cd0 at ahc0 bus 0 target 3 lun 0 cd0: <IBM CDRM00203\\000\\000\\000\\000\\000!K BZ33>; Removable CD-ROM SCSI-2 device cd0: 5.000MB/s transfers (5.000MHz, offset 15) cd0: Attempt to query device size failed: NOT READY, Medium not present da0 at ahc0 bus 0 target 0 lun 0 da0: <IBM DPSS-318350N S9BA>; Fixed Direct Access SCSI-3 device da0: 20.000MB/s transfers (10.000MHz, offset 8, 16bit), Tagged Queueing Enabled da0: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C) Mounting root from ufs:/dev/da0s1a[/quote] 小弟剛剛裝了FB5.2.1R，啟動時卻出現「SCB Timed out」的提示 難道沒有人遇到過這個問題嗎？小弟真的很急，請各位前輩多多幫忙，謝謝！ [ 關閉窗口 ]