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DateSat, 15 May 2004 12:14:18 +0200
FromJens Axboe <>
SubjectRe: dma ripping
On Fri, May 14 2004, Daniele Bernardini wrote:
> Hi Folks, 
> 
> I am trying to get cd ripping to work on a freshly installed SuSE 9.1 on
> IBM thinkpad R50 with dvdram drive. 
> 
> It works for a while and then hangs. At this point nothing short of a
> reboot works. Ripping stop working when the message 
> 	cdrom: dropping to single frame dma
> comes up. The system feels slow for a couple of seconds and then is back
> to normal, but no ripping until next reboot
> 
> I am running the 2.6.4 compiled by SuSE.

Can you retest with this small debug patch applied.

--- drivers/cdrom/cdrom.c~	2004-05-15 12:12:24.770228291 +0200
+++ drivers/cdrom/cdrom.c	2004-05-15 12:13:25.101720866 +0200
@@ -1987,6 +1987,7 @@
 			struct request_sense *s = rq->sense;
 			ret = -EIO;
 			cdi->last_sense = s->sense_key;
+			printk("rip failed, sense %x/%x/%x\n", s->sense_key, s->asc, s->ascq);
 		}
 
 		if (blk_rq_unmap_user(rq, ubuf, bio, len))
-- 
Jens Axboe

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