I am using a modified kernel: http://www.array.org/ubuntu/features.html
Which includes the 40-wire UDMA patch. I do not know if this same patch is going to be included in the official kernel, but it seems to work flawlessly. Anyway, the speed improvement (Eee PC 701, 4GB) is much less than what I expected. -- Wrong UDMA mode due to error in 40/80 wire cable detection https://bugs.launchpad.net/bugs/195221 You received this bug notification because you are a member of Ubuntu EEEPC, which is a direct subscriber. Status in Ubuntu: Invalid Status in “linux” source package in Ubuntu: Triaged Status in “linux-source-2.6.22” source package in Ubuntu: Won't Fix Bug description: I have an Asus Eee PC 4GB laptop, and I am testing Ubuntu Hardy 8.04 (kernel 2.6.24-8) on it. The computer has a 4GB SSD soldered to the motherboard. The disk is reported as UDMA66 capable, but is installed as UDMA33 because the system does not detect a 80 pin conductor. I have tried adding kernel parameters (ide0=ata66 ide1=ata66) but these seems to be ignored. I have read that these parameters are just to instruct the kernel not to do the 40/80 wire test. I have written a blog entry [http://ospatia.blogspot.com/2008/02/eee-pc-optimizar-el-disco-ssd.html] (in Spanish) with additional information (dmesg output, some tests with hdparm, ...) and I have found additioal people having same problem with fast (300x) Compact Flash cards. dmesg output extract: [ 26.700245] ata2.00: ATA-4: SILICONMOTION SM223AC, , max UDMA/66 [ 26.700256] ata2.00: 7815024 sectors, multi 0: LBA [ 26.700297] ata2.00: limited to UDMA/33 due to 40-wire cable [ 26.716208] ata2.00: configured for UDMA/33 _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-eeepc Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-eeepc More help : https://help.launchpad.net/ListHelp
