[lkml]   [2003]   [Jul]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: DVD/CD Read Problem: cdrom_decode_status: status=0x51 {DriveReady SeekComplete Error}
On Sun, Jul 13, 2003 at 07:51:07PM +0400, Andrey Borzenkov wrote:
> this is ide-cd problem. drivers/ide/ide-cd:cdrom_decode_status():
> [ ... ]
> } else if ((err & ~ABRT_ERR) != 0) {
> [ ... ]
> } else if (sense_key == MEDIUM_ERROR) {
> [ ... ]
> they are not user-space issues. Try to swap two conditions above and see what
> happens. I cannot test it anymore for reason below ...

Swapping these conditions improved the situation quite a lot.
Subjectively, I would say it's 90% better. By extending the read-ahead
cache to 32M, I can play the DVD almost perfectly with those conditions
(ABRT_ERR and MEDIUM_ERROR) swapped.

Also, for the first time, I get messages of this sort in syslog:

Jul 13 22:22:47 joehill kernel: end_request: I/O error, dev hdc, sector 7865320
Jul 13 22:22:47 joehill kernel: Buffer I/O error on device hdc, logical block 983165

Before, the only sorts of errors I ever got were:

Jul 13 00:14:35 joehill kernel: hdc: cdrom_decode_status: status=0x51 { DriveReady SeekComplete Error }
Jul 13 00:14:35 joehill kernel: hdc: cdrom_decode_status: error=0x30LastFailedSense 0x03
Jul 13 00:14:35 joehill kernel: hdc: ide_intr: huh? expected NULL handler on exit

Is there a reason these conditions should *not* be swapped? Is there
something I can test? Otherwise, my problem is basically fixed by this

--Adam Kessel
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:46    [W:0.043 / U:7.664 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site