On Sun, Aug 24, 2008 at 10:27 AM, Jeffrey W. Baker <jwbaker@xxxxxxxxx> wrote: > I started using the min_power ALPM setting on my ThinkPad to save power > (which works great, thanks!) but it causes a small problem. When the > machine resumes from suspend-to-ram it hangs for about 10s and then > prints this on the console: > > ata1: COMRESET failed (errno=-16) > > It then proceeds normally. The full messages are: > > ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) > ata1.00: configured for UDMA/100 > ata1: failed to recover some devices, retrying in 5 secs > ata1: soft resetting link > ata1: SATA link down (SStatus 611 SControl 300) > ata1: failed to recover some devices, retrying in 5 secs > ata1: hard resetting link > ata1: port is slow to respond, please be patient (Status 0x80) > ata1: COMRESET failed (errno=-16) > ata1: hard resetting link > ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Can you enable CONFIG_PRINTK_TIME in your kernel? It sounds like the ahci driver is having problems spinning up the disk after putting it into a "low power state" (which I have no clue might be). Getting more accurate time stamps might be a useful additional clue. hth, grant > > After which point the machine works normally. The SATA controller is an > Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev > 03) and the SATA target is a SAMSUNG MCBQE32G Rev: PS10. The kernel is > 2.6.24. I haven't tried anything newer. > > If the ALPM setting is left at its default of max_performance then > resume from suspend is instant. Is there any way to work around this? > ALPM is worth a solid 30 minutes of extra battery life, so obviously I'd > like to use it. If nothing else, it might be helpful to have a module > parameter to shorten the timeout on known-working hardware. > > -jwb > > -- > To unsubscribe from this list: send the line "unsubscribe linux-ide" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
