+ Shane On Sun, Apr 03, 2011 at 07:04:17AM +0200, Gottfried Haider wrote: > Dear linux-ide, > > i was setting up a linux install on a brand new Lenovo x120e laptop, > which is based on AMD's E-350 "Zacate" platform, when i realized that > the sata link speed was only reported as being 3.0 Gbps. While as far > as i know the particular machine has not been advertised as supporting > 6 Gbps sata, i had expected the chipset to make use of it [1]. > > The controller device is a 1002:4391. I am using it with kernel > 2.6.39-rc1 on an Intel SSD that supports 6 Gbps link speeds (as > confirmed by hdparm). In sysfs, I read sata_spd as "3.0 Gbps" and both > "sata_spd_limit" and "hw_sata_spd_limit" as "<unknown>". > > On boot, the device comes up as: > ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > ata1.00: ATA-8: INTEL SSDSC2MH120A2, PPG2, max UDMA/133 > ata1.00: configured for UDMA/133 > > Any suggestions? Hmm, interesting. We had a similar issue already, see http://marc.info/?t=128975810200005&r=1&w=2 and it could be that BIOS is downgrading the sata link to save power, as Shane pointed out then. Although in that case, it should detect a 6Gbps drive on the link and at operate at least that link at full speed. Hmmm... Gottfried, can you send full dmesg along with 'lspci -vvxxxx' as root please? Thanks. -- Regards/Gruss, Boris. -- 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
