ubuntu-eeepc team mailing list archive

[Leann Ogasawara <leann@xxxxxxxxxx>]

The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the
upcoming Intrepid Ibex 8.10 release.  As a result, the kernel team would
appreciate it if you could please test this newer 2.6.27 Ubuntu kernel.
There are one of two ways you should be able to test:

1)  If you are comfortable installing packages on your own, the linux-
image-2.6.27-* package is currently available for you to install and
test.

--or--

2)  The upcoming Alpha5 for Intrepid Ibex 8.10 will contain this newer
2.6.27 Ubuntu kernel.  Alpha5 is set to be released Thursday Sept 4.
Please watch http://www.ubuntu.com/testing for Alpha5 to be announced.
You should then be able to test via a LiveCD.

Please let us know immediately if this newer 2.6.27 kernel resolves the
bug reported here or if the issue remains.  More importantly, please
open a new bug report for each new bug/regression introduced by the
2.6.27 kernel and tag the bug report with 'linux-2.6.27'.  Also, please
specifically note if the issue does or does not appear in the 2.6.26
kernel.  Thanks again, we really appreicate your help and feedback.

** Tags added: cft-2.6.27

-- 
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