Hello, I hope someone can help me with a problem that I am having with my Adaptec 2940U2W LVD controller. For some reason the drives are only transfering at 40.0MB/s. I am also having problems mounting CD's, and I think this is the cause of some random lockups. Also, occasionally the computer will completely stop responding for about 30 seconds, come back to life for about 10-15 seconds and then stop responding again and then as suddenly as the symptoms start they go away sometimes after about 10 minutes sometimes after an hour or more. Currently I am running kernel 2.2.14 with the driver for the card compiled into the kernel, but I have experienced this problem with kernels 2.2.10 all the way up, with the driver as both a module and compiled directly in. The SCSI chain looks like this, the controller has two connectors, one LVD and one normal, on the LVD chain I have two Western Digital Enterprise drives, on ID 0 the drive is a 10K 18.31GB, and ID 2 is a 7200 18.3GB followed by an active terminator (the cable is a teflon LVD cable) on the second connector I have connected two CDRom Drives, one is a Sony Spressa 4X Burner, and the other is a NEC CD Rom. The CDROMS are ID's 4 and 6 respectively. I have also tried running the CDRoms on a seperate 2940UW controller, but the drives always report 40.0MB/s. In the BIOS most of the settings are at the default and the drives are set for 80.0 MB/s transfer rate. I have been looking at the scsiinfo and scsi-config programs to see if I can find out what the problem is, and I have noticed a couple of things that dont seem right (forgive me I'm not really familiar with SCSI). The first thing that catches my eye is that the Wide Bus 32 is 0 and Wide Bus 16 is 1 for both /dev/sda and sdb in the Inquiry command portion of scsiinfo, scsi-config reports the same. Synchronous neg., Linked Commands and Command Queuing are all 1 as well. The other thing that bothers me is that there are a lot of Entries on the Data from Defects list for both drives, 8168 entries for the 10k drive and 404 for the 7200. I have no idea what these defects are, or if they are even bad, but I thought it was worth a mention. I have looked at a lot of documentation, but I cant find anywhere how to force the transfer rates or negoation. I'm thinking that there may be some command that I need to pass to LILO at boot time, but that is just a guess. The controller has the latest BIOS, and for the most part linux is running really well on these drives. I think there are some subtle problems that are arising from this though and I would like to get it worked out. Thank you very much in advance for you help and I am eager to provide any more information that may be needed. Thanks again, Dave - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED]
