[Bug 567831] Re: Acer TravelMate 5520G random sata reset high io load

[Péter]

New experience: if power switch to battery (remove ac power)  always
reset sata controller:


[  595.013308] ata3.00: status: { DRDY }
[  595.013315] ata3.00: failed command: READ FPDMA QUEUED
[  595.013329] ata3.00: cmd 60/08:98:97:e1:39/00:00:00:00:00/40 tag 19 ncq 4096 in
[  595.013332]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[  595.013339] ata3.00: status: { DRDY }
[  595.013345] ata3.00: failed command: READ FPDMA QUEUED
[  595.013359] ata3.00: cmd 60/08:a0:2f:08:34/00:00:00:00:00/40 tag 20 ncq 4096 in
[  595.013362]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[  595.013369] ata3.00: status: { DRDY }
[  595.013382] ata3: hard resetting link
[  595.840066] ata3: softreset failed (device not ready)
[  595.840079] ata3: applying SB600 PMP SRST workaround and retrying
[  596.020079] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[  596.021304] ata3.00: SB600 AHCI: limiting to 255 sectors per cmd
[  596.022677] ata3.00: SB600 AHCI: limiting to 255 sectors per cmd
[  596.022685] ata3.00: configured for UDMA/100
[  596.022700] ata3.00: device reported invalid CHS sector 0
[  596.022708] ata3.00: device reported invalid CHS sector 0

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Acer TravelMate 5520G random sata reset high io load
https://bugs.launchpad.net/bugs/567831
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