Date: Sat, 13 Jul 1996 01:24:05 -0400 (EDT) From: Kenneth Merry <ken@ulc199.residence.gatech.edu> To: stable@freebsd.org Subject: playing CD's causes SCSI reset? Message-ID: <199607130524.BAA20683@ulc199.residence.gatech.edu>
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I had an interesting experience tonight while playing a CD in my CDROM drive. (using WorkMan) I had the CD paused for a while, and then came back and hit play. No problem. Next, I hit the button for song #10, and song #7 was currently playing. Here's what I got: ======= cd0(ahc0:1:0): timed out in command phase, SCSISIGI == 0x84 cd0(ahc0:1:0): asserted ATN - device reset in message buffer cd0(ahc0:1:0): timed out in dataout phase, SCSISIGI == 0x0 ahc0: Issued Channel A Bus Reset #1. 1 SCBs aborted sd0(ahc0:0:0): UNIT ATTENTION asc:29,2 , retries:4 ======= I tried various things a couple more times, and had similar problems. I even tried xcdplayer, which caused another SCSI bus reset. I finally got things working again using workman, but I'm not quite sure why. I did get one variation on the error message. This may have happened when I tried xcdplayer: ======= cd0(ahc0:1:0): timed out in command phase, SCSISIGI == 0x84 cd0(ahc0:1:0): asserted ATN - device reset in message buffer cd0(ahc0:1:0): timed out in dataout phase, SCSISIGI == 0x0 ahc0: Issued Channel A Bus Reset #1. 1 SCBs aborted sd0(ahc0:0:0): UNIT ATTENTION asc:29,2 , retries:4 cd0(ahc0:1:0): UNIT ATTENTION asc:29,0 cd0(ahc0:1:0): Power on, reset, or bus device reset occurred ======= It seems like the CD device, player, or something doesn't like skipping to different tracks on a CD. Hitting the 'next track' button in workman seems to have the same bus-reset effect as hitting a button for an arbitrary track. Anyway, here's my setup in case anyone has any ideas on what could be wrong: ======= FreeBSD 2.1-STABLE #0: Thu Jul 11 22:15:43 EDT 1996 ken@area238.residence.gatech.edu:/usr/src/sys/compile/thunderdome CPU: i486 DX4 (486-class CPU) Origin = "GenuineIntel" Id = 0x480 Stepping=0 Features=0x3<FPU,VME> real memory = 67108864 (65536K bytes) avail memory = 64028672 (62528K bytes) ahc0: <Adaptec 284X SCSI host adapter> at 0x1c00-0x1cff irq 11 on isa ahc0: aic7770 >= Rev E, Single Channel, SCSI Id=7, 4 SCBs ahc0 waiting for scsi devices to settle ahc0: target 0 Tagged Queuing Device (ahc0:0:0): "Quantum XP34300 55B1" type 0 fixed SCSI 2 sd0(ahc0:0:0): Direct-Access 4101MB (8399520 512 byte sectors) (ahc0:1:0): "NEC CD-ROM DRIVE:500 1.0" type 5 removable SCSI 2 cd0(ahc0:1:0): CD-ROM cd0(ahc0:1:0): NOT READY asc:3a,0 Medium not present can't get the size (ahc0:4:0): "SONY SDT-5000 3.02" type 1 removable SCSI 2 st0(ahc0:4:0): Sequential-Access density code 0x13, drive empty ======= I compiled the kernel on 7/11/96 with whatever the latest CTM delta. (cvs-cur delta, that is) This doesn't seem to be a real serious problem, the system stays stable and all (Thanks Justin!) but it is a little strange. Ken -- Kenneth Merry ken@ulc199.residence.gatech.edu Disclaimer: I don't speak for GTRI, GT, or Elvis.
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