crash

[Robert W. Rowe]

One word: Heat. To add a word: Probably.

In more words, as you use the drive, it heats up and distorts some 
connector or other. Like someone said, check your connections and make sure 
the quality of your cabling is up to this usage.

As an example of heat problems, I have to run with my machine's cover off 
or after about an hour or so I lose 128 MB RAM. Yes, I know, buy a better 
power supply.

At 06:13 PM 05/17/2000 +0200, pb wrote:
>Hi,
>
>I hope I am not offtopic, but I don't have any better ideas
>where I could ask ...
>
>I've a 2940u2w, and a yamaha cdrw8424s, well and the only resuts I get
>is, that the system crashes or the scsi part is still unusable after un
>usage about half an hour ... ie about half an hour all works fine, but
>than I just get timeout und bus errors und the thing hangs ...
>all the tips I got from usenet or mailinglist were to check termination
>cables etc ... but imho that's not the problem coz as mentioned for about
>half an hour the drive works just fine ...
>maybe anyone on here has any ideas what I could try coz I've tried many
>things ... installed kernel 2.2.15 patched the aic7xxx driver from
>5.1.28 -> 5.1.29 and played arround with other things and settings, but
>didn't get any positive resluts ...
>
>here some example logs,
>
>1)
>
>May 16 06:04:38 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 868664
>May 16 06:04:38 hehe kernel: SCSI CD error : host 0 id 3 lun 0 return
>code = 26030000
>May 16 06:04:38 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 868536
>May 16 06:04:38 hehe kernel: SCSI CD error : host 0 id 3 lun 0 return
>code = 26030000
>May 16 06:04:38 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 868792
>May 16 06:04:40 hehe kernel: scsi0 channel 0 : resetting for second half
>of retries.
>May 16 06:04:40 hehe kernel: SCSI bus is being reset for host 0 channel
>0.
>May 16 06:04:42 hehe kernel: sr0: CD-ROM not ready.  Make sure you have
>a disc in the drive.
>May 16 06:04:42 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 868796
>May 16 06:04:42 hehe kernel: sr0: CD-ROM not ready.  Make sure you have
>a disc in the drive.
>May 16 06:04:42 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 868668
>May 16 06:04:42 hehe kernel: sr0: CD-ROM not ready.  Make sure you have
>a disc in the drive.
>May 16 06:04:42 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 868540
>May 16 06:04:42 hehe kernel: sr0: CD-ROM not ready.  Make sure you have
>a disc in the drive.
>May 16 06:04:42 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 868512
>May 16 06:04:42 hehe kernel: Device not ready.  Make sure there is a
>disc in the drive.
>May 16 06:04:42 hehe kernel: sr0: CD-ROM not ready.  Make sure you have
>a disc in the drive.
>May 16 06:04:42 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 868512
>
>(BTW all these messages happened while accessing the drive which worked for
>about half an hour fine )
>
>2)
>
>May 16 00:44:57 hehe kernel: (scsi0:0:3:-1) Unexpected busfree,
>LASTPHASE = 0x40, SEQADDR = 0x63
>May 16 00:45:27 hehe kernel: scsi : aborting command due to timeout :
>pid 22, scsi0, channel 0, id 3, lun 0 Request Sense 00 00 00 10 00
>May 16 00:45:30 hehe kernel: SCSI host 0 abort (pid 22) timed out -
>resetting
>May 16 00:45:30 hehe kernel: SCSI bus is being reset for host 0 channel
>0.
>May 16 00:45:32 hehe kernel: (scsi0:0:3:0) Synchronous at 20.0
>Mbyte/sec, offset 15.
>May 16 00:45:40 hehe kernel: VFS: Disk change detected on device
>sr(11,0)
>May 16 00:46:10 hehe kernel: scsi : aborting command due to timeout :
>pid 34, scsi0, channel 0, id 3, lun 0 Read Capacity 00 00 00 00 00 00 00
>00 00
>May 16 00:46:40 hehe kernel: SCSI host 0 abort (pid 34) timed out -
>resetting
>May 16 00:46:40 hehe kernel: SCSI bus is being reset for host 0 channel
>0.
>May 16 00:46:44 hehe kernel: (scsi0:0:3:0) Synchronous at 20.0
>Mbyte/sec, offset 15.
>May 16 00:46:44 hehe kernel: Device not ready.  Make sure there is a
>disc in the drive.
>May 16 00:46:52 hehe kernel: VFS: Disk change detected on device
>sr(11,0)
>May 16 00:46:52 hehe kernel: VFS: Disk change detected on device
>sr(11,0)
>
>3)
>
>May 16 01:20:33 hehe kernel: (scsi0:0:3:-1) Unexpected busfree,
>LASTPHASE = 0x40, SEQADDR = 0x62
>May 16 01:20:39 hehe kernel: scsi0 channel 0 : resetting for second half
>of retries.
>May 16 01:20:39 hehe kernel: SCSI bus is being reset for host 0 channel
>0.
>May 16 01:20:42 hehe kernel: SCSI CD error : host 0 id 3 lun 0 return
>code = 26030000
>May 16 01:20:42 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 168
>May 16 01:23:45 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 168
>May 16 01:23:55 hehe kernel: VFS: Disk change detected on device
>sr(11,0)
>May 16 01:24:25 hehe kernel: scsi : aborting command due to timeout :
>pid 297, scsi0, channel 0, id 3, lun 0 Read Capacity
>  00 00 00 00 00 00 00 00 00
>May 16 01:24:29 hehe kernel: Device not ready.  Make sure there is a
>disc in the drive.
>May 16 01:24:33 hehe kernel: scsi0 channel 0 : resetting for second half
>of retries.
>May 16 01:24:33 hehe kernel: SCSI bus is being reset for host 0 channel
>0.
>May 16 01:24:40 hehe kernel: scsi0 channel 0 : resetting for second half
>of retries.
>May 16 01:24:40 hehe kernel: SCSI bus is being reset for host 0 channel
>0.
>May 16 01:24:42 hehe kernel: sr0: CDROM (ioctl) error, command: Read TOC
>00 00 00 00 00 00 00 0c 40
>May 16 01:24:42 hehe kernel: sr0b:00: old sense key None
>May 16 01:24:44 hehe kernel: Non-extended sense class 0 code 0x0 scsi0
>channel 0 : resetting for second half of retries.
>May 16 01:24:44 hehe kernel: SCSI bus is being reset for host 0 channel
>0.
>May 16 01:24:46 hehe kernel: sr0: CDROM (ioctl) error, command: Read TOC
>00 00 00 00 00 00 00 0c 00
>May 16 01:24:46 hehe kernel: sr0b:00: old sense key None
>May 16 01:24:46 hehe kernel: Non-extended sense class 0 code 0x0 <7>VFS:
>Disk change detected on device sr(11,0)
>May 16 01:24:46 hehe kernel: SCSI error: host 0 id 3 lun 0 return code =
>26030000
>May 16 01:24:46 hehe kernel: ^ISense class 0, sense error 0, extended
>sense 0
>May 16 01:24:46 hehe kernel: VFS: Disk change detected on device
>sr(11,0)
>May 16 01:24:48 hehe kernel: scsi0 channel 0 : resetting for second half
>of retries.
>May 16 01:24:48 hehe kernel: SCSI bus is being reset for host 0 channel
>0.
>May 16 01:24:50 hehe kernel: Device not ready.  Make sure there is a
>disc in the drive.
>May 16 01:24:50 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 64
>May 16 01:24:50 hehe kernel: isofs_read_super: bread failed, dev=0b:00,
>iso_blknum=16, block=32
>May 16 01:24:50 hehe kernel: Device not ready.  Make sure there is a
>disc in the drive.
>May 16 01:25:57 hehe kernel: VFS: Disk change detected on device
>sr(11,0)
>
>4)
>
>May 16 11:31:23 hehe kernel: scsi : aborting command due to timeout :
>pid 1308, scsi0, channel 0, id 3, lun 0 Read (10) 00 00 00 9e 36 00 00
>20 00
>May 16 11:31:55 hehe kernel: SCSI host 0 abort (pid 1308) timed out -
>resetting
>May 16 11:31:55 hehe kernel: SCSI bus is being reset for host 0 channel
>0.
>May 16 11:31:57 hehe kernel: (scsi0:0:3:0) Synchronous at 20.0
>Mbyte/sec, offset 15.
>May 16 11:31:57 hehe kernel: sr0: CD-ROM not ready.  Make sure you have
>a disc in the drive.
>May 16 11:31:57 hehe kernel: CD-ROM I/O error: dev 0b:00, sector 162008
>
>
>and so one
>
>--
>cul8er
>  Peter
>--------=[ E Pluribus Unix ]=--+--=[ http://funworld.forfree.at ]=-
>It's trivial to make fun of Microsoft products, but it takes a real
>man to make them work, and a god to make them do anything useful.
>
>
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