Red Hat Bugzilla – Bug 426659
Unable to play dvds, or use hdparm, with ata_piix
Last modified: 2008-11-26 05:59:26 EST
I'm trying to play a video dvd (with a variety of players), but all fail with I/O errors, such as Dec 23 23:14:41 grenache kernel: Buffer I/O error on device sr0, logical block 5424 Dec 23 23:14:41 grenache kernel: end_request: I/O error, dev sr0, sector 21696 Dec 23 23:14:41 grenache kernel: end_request: I/O error, dev sr0, sector 21700 Dec 23 23:14:41 grenache kernel: end_request: I/O error, dev sr0, sector 762228 Dec 23 23:14:41 grenache kernel: end_request: I/O error, dev sr0, sector 762228 Dec 23 23:14:41 grenache kernel: end_request: I/O error, dev sr0, sector 762232 Dec 23 23:14:41 grenache kernel: end_request: I/O error, dev sr0, sector 762228 Dec 23 23:14:41 grenache kernel: end_request: I/O error, dev sr0, sector 762232 Dec 23 23:14:41 grenache kernel: end_request: I/O error, dev sr0, sector 762228 I tried to see if it might be a speed related issue, so I had a try with hdparm, but this didn't work: [root ~]# hdparm -I /dev/sr0 /dev/sr0: HDIO_DRIVE_CMD(identify) failed: Input/output error [root ~]# hdparm -X udma1 /dev/sr0 /dev/sr0: setting xfermode to 65 (UltraDMA mode1) HDIO_DRIVE_CMD(setxfermode) failed: Input/output error I wonder if the kernel needs a newer ata driver which might fix all these errors? Kernel is 2.6.23.9-85.fc8 #1 SMP (i686). Machine has an ata_piix handled controller with a sata disk and a pata dvd writer in it (Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller). Reading and writing from cds works fine, reading and writing data dvds works fine too, it's just hdparm and video dvds that are giving errors.
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Seems to have been fixed in the mean time, so I think it was an old/buggy ata_piix driver. Just re-tested on 2.6.26.6-49.fc8 and dvd videos play just fine.