The AIC-7XXX version 6.2.1 driver hangs at startup under 2.4.x (we've tried 2.4.2-2 (RH 7.1), 2.4.5, and 2.4.9). The complete boot output is attached; the interesting parts are as follows: scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.1 aic7896/97: Ultra2 Wide Channel A, SCSI Id=7, 32/255 SCBs scsi1 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.1 aic7896/97: Ultra2 Wide Channel B, SCSI Id=7, 32/255 SCBs scsi0:0:0:0: Attempting to queue an ABORT message scsi0:0:0:0: Command already completed aic7xxx_abort returns 8194 scsi0:0:0:0: Attempting to queue an ABORT message scsi0:0:0:0: Device is active, asserting ATN Recovery code sleeping Recovery code awake Timer Expired aic7xxx_abort returns 8195 scsi0:0:0:0: Attempting to queue a TARGET RESET message aic7xxx_dev_reset returns 8195 Recovery SCB completes scsi0:0:0:0: Attempting to queue an ABORT message ahc_intr: HOST_MSG_LOOP bad phase 0x0 scsi0:0:0:0: Cmd aborted from QINFIFO aic7xxx_abort returns 8194 scsi: device set offline - not ready or command retry failed after bus reset: host 0 channel 0 id 0 lun 0 These same machines worked fine with 2.2.18 from www.kernel.org and 2.2.19 from RedHat. Any suggestions? Machine is an Intel L440GX+ 700 MHZ PIII 2GB RAM Adapter is Adaptec AIX-7896 Bios level is v2.20.S1B1 Disks are QUANTUM ATLS TY09TL Machine bios is Phoenix 4.0 Release 6.0 -- ----------------------------------------------------------- Ray Bryant, Linux Performance Analyst, Times N Systems 1908 Kramer Lane, Bldg. B, Suite P, Austin, TX 78758 512-977-5366, raybry@timesn.com -----------------------------------------------------------