From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt To: Daniel Eisenbud , Subject: Re: Fwd: mesh SCSI bus locks hard on 7500 when burning a CD-R in dao mode Date: Fri, 26 Jan 2001 12:07:24 +0100 Message-Id: <19341221043908.3227@mailhost.mipsys.com> In-Reply-To: <20010125165015.B15827@allspice.cs.swarthmore.edu> References: <20010125165015.B15827@allspice.cs.swarthmore.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: >I have a Powermac 7500 (with a G3 accelerator.) I have replaced the >internal CD-ROM with a Yamaha CD-RW drive. This sits on the mesh SCSI >bus. I have the mesh driver configured to run at 5 megabytes/second >(since I get massive SCSI problems all over the place if I set it to >10.) Under a variety of kernels, from 2.2.15 or so to 2.4.0 from Paul >Mackeras's tree, my SCSI setup is generally stable and I can burn CD-R >disks just fine in track-at-once mode. However, if I try to burn a disk >in disk-at-once mode, either with cdrdao or cdrecord, the SCSI bus >appears to silently lock up hard, bringing down my whole machine. >Nothing is logged at all, as far as I can tell. Has anyone had this >problem before? Does anyone know of a solution? If not, how would I go >about debugging this further? Do you see any kind of kernel error messages on the console before it locks up ? Ben. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/