I can confirm the bug still exists under 3.11.0-7.14
uanwatchtv@teevee:~$ uname -a Linux teevee 3.11.0-7-generic #14-Ubuntu SMP Mon Sep 16 18:37:27 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux watchtv@teevee:~$ dmesg|grep ata5 [ 1.082883] ata5: SATA max UDMA/133 cmd 0x9e0 ctl 0xbe0 bmdma 0xc400 irq 23 [ 1.552031] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 1.560117] ata5.00: ATAPI: ATAPI iHOS104, WL0G, max UDMA/100 [ 1.576138] ata5.00: configured for UDMA/100 [ 6.576040] ata5.00: qc timeout (cmd 0xa0) [ 6.576047] ata5.00: TEST_UNIT_READY failed (err_mask=0x4) [ 7.044052] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 7.068123] ata5.00: configured for UDMA/100 [ 29.856044] ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen [ 29.856065] ata5.00: cmd a0/01:00:00:60:00/00:00:00:00:00/a0 tag 0 dma 96 in [ 29.856067] ata5.00: status: { DRDY } [ 29.856075] ata5: hard resetting link [ 29.856077] ata5: nv: skipping hardreset on occupied port [ 30.324069] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 30.348329] ata5.00: configured for UDMA/100 [ 35.348031] ata5.00: qc timeout (cmd 0xa0) [ 35.348038] ata5.00: TEST_UNIT_READY failed (err_mask=0x4) [ 35.348044] ata5: hard resetting link [ 35.348046] ata5: nv: skipping hardreset on occupied port [ 35.816055] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 35.840125] ata5.00: configured for UDMA/100 [ 40.840027] ata5.00: qc timeout (cmd 0xa0) [ 40.840034] ata5.00: TEST_UNIT_READY failed (err_mask=0x4) [ 40.840038] ata5: limiting SATA link speed to 1.5 Gbps [ 40.840040] ata5.00: limiting speed to UDMA/100:PIO3 [ 40.840045] ata5: hard resetting link [ 40.840047] ata5: nv: skipping hardreset on occupied port [ 41.308037] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 41.332118] ata5.00: configured for UDMA/100 watchtv@teevee:~$
I can confirm the bug still exists under 3.11.0-7.14
uanwatchtv@ teevee: ~$ uname -a 00:60:00/ 00:00:00: 00:00/a0 tag 0 dma 96 in
Linux teevee 3.11.0-7-generic #14-Ubuntu SMP Mon Sep 16 18:37:27 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
watchtv@teevee:~$ dmesg|grep ata5
[ 1.082883] ata5: SATA max UDMA/133 cmd 0x9e0 ctl 0xbe0 bmdma 0xc400 irq 23
[ 1.552031] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 1.560117] ata5.00: ATAPI: ATAPI iHOS104, WL0G, max UDMA/100
[ 1.576138] ata5.00: configured for UDMA/100
[ 6.576040] ata5.00: qc timeout (cmd 0xa0)
[ 6.576047] ata5.00: TEST_UNIT_READY failed (err_mask=0x4)
[ 7.044052] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 7.068123] ata5.00: configured for UDMA/100
[ 29.856044] ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 29.856065] ata5.00: cmd a0/01:00:
[ 29.856067] ata5.00: status: { DRDY }
[ 29.856075] ata5: hard resetting link
[ 29.856077] ata5: nv: skipping hardreset on occupied port
[ 30.324069] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 30.348329] ata5.00: configured for UDMA/100
[ 35.348031] ata5.00: qc timeout (cmd 0xa0)
[ 35.348038] ata5.00: TEST_UNIT_READY failed (err_mask=0x4)
[ 35.348044] ata5: hard resetting link
[ 35.348046] ata5: nv: skipping hardreset on occupied port
[ 35.816055] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 35.840125] ata5.00: configured for UDMA/100
[ 40.840027] ata5.00: qc timeout (cmd 0xa0)
[ 40.840034] ata5.00: TEST_UNIT_READY failed (err_mask=0x4)
[ 40.840038] ata5: limiting SATA link speed to 1.5 Gbps
[ 40.840040] ata5.00: limiting speed to UDMA/100:PIO3
[ 40.840045] ata5: hard resetting link
[ 40.840047] ata5: nv: skipping hardreset on occupied port
[ 41.308037] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 41.332118] ata5.00: configured for UDMA/100
watchtv@teevee:~$