Comment 25 for bug 344093

Revision history for this message
markofealing (mark-ferns16) wrote :

My particular problem seems to be caused by the VIA VT8251 controller causing errors on the SATA bus and the SATA bus dropping back to UDMA/33. See editied version of Kernel log below:

2010-04-25 16:42:12 [ 1705.688583] ata3.00: exception Emask 0x10 SAct 0x0 SErr 0x580100 action 0x6 frozen
2010-04-25 16:42:12 [ 1705.688589] ata3.00: irq_stat 0x08000000, interface fatal error
2010-04-25 16:42:12 [ 1705.688594] ata3: SError: { UnrecovData 10B8B Dispar Handshk }
2010-04-25 16:42:12 [ 1705.688604] ata3.00: cmd 35/00:00:1f:59:fa/00:04:16:00:00/e0 tag 0 dma 524288 out
2010-04-25 16:42:12 [ 1705.688605] res 50/00:00:1e:59:fa/00:00:16:00:00/e0 Emask 0x10 (ATA bus error)
2010-04-25 16:42:12 [ 1705.688609] ata3.00: status: { DRDY }
2010-04-25 16:42:12 [ 1705.688615] ata3: hard resetting link
2010-04-25 16:42:13 [ 1706.212549] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
2010-04-25 16:42:13 [ 1706.332620] ata3.00: configured for UDMA/133

2010-04-25 16:46:34 [ 1968.012445] ata3.00: limiting speed to UDMA/100:PIO4
2010-04-25 16:46:34 [ 1968.012457] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x180000 action 0x6 frozen
2010-04-25 16:46:34 [ 1968.012467] ata3: SError: { 10B8B Dispar }
2010-04-25 16:46:34 [ 1968.012484] ata3.00: cmd 35/00:00:9f:e2:81/00:04:17:00:00/e0 tag 0 dma 524288 out
2010-04-25 16:46:34 [ 1968.012486] res 40/00:00:6e:08:7b/00:00:17:00:00/e0 Emask 0x4 (timeout)
2010-04-25 16:46:34 [ 1968.012493] ata3.00: status: { DRDY }
2010-04-25 16:46:34 [ 1968.012520] ata3: hard resetting link
2010-04-25 16:46:35 [ 1968.540878] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
2010-04-25 16:46:35 [ 1968.644397] ata3.00: configured for UDMA/100
2010-04-25 16:46:35 [ 1968.644424] ata3: EH complete

2010-04-25 16:49:14 [ 2128.010067] ata3.00: limiting speed to UDMA/33:PIO4
2010-04-25 16:49:14 [ 2128.010078] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x180000 action 0x6 frozen
2010-04-25 16:49:14 [ 2128.010088] ata3: SError: { 10B8B Dispar }
2010-04-25 16:49:14 [ 2128.010104] ata3.00: cmd 35/00:00:47:a5:8a/00:04:17:00:00/e0 tag 0 dma 524288 out
2010-04-25 16:49:14 [ 2128.010107] res 40/00:00:3e:9d:8a/00:00:17:00:00/e0 Emask 0x4 (timeout)
2010-04-25 16:49:14 [ 2128.010114] ata3.00: status: { DRDY }
2010-04-25 16:49:14 [ 2128.010123] ata3: hard resetting link
2010-04-25 16:49:15 [ 2128.542591] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
2010-04-25 16:49:15 [ 2128.634875] ata3.00: configured for UDMA/33
2010-04-25 16:49:15 [ 2128.634907] ata3: EH complete

This appears to be similar to the above problem although with a different SATA controller.

See my blog http://tinyurl.com/2v5cnpu for more info.

I think this bug and Bug #282536 are similar if not the same, and possibly Bug #190492.