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[Jullian Gafar <jullian@xxxxxxxxxxxx>]

I have just upgraded to 8.10 beta and can report that this bug still
exists. I also tried the .deb package named libata-80wire (from
http://launchpadlibrarian.net/17612513/libata-
80wire_2.6.24-19.41_i386.deb) but up to now it's only available for
kernel 2.6.24-19. It correctly sets my sda to UDMA/100, but my sound
stops working (because I tested that kernel on Ibex - AFAIK that kernel
is for Hardy).

Could anybody make that package for 8.10 please, without it my laptop
works at a snail's pace - even slower that Windows. When I', on 2.6.24
(patched) it works great, but I want everything else to work too...

My Laptop: NEC Versa E400.

root@zelda:~# lspci
00:00.0 Host bridge: Silicon Integrated Systems [SiS] 650/M650 Host (rev 01)
00:01.0 PCI bridge: Silicon Integrated Systems [SiS] Virtual PCI-to-PCI bridge (AGP)
00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS961 [MuTIOL Media IO]
00:02.1 SMBus: Silicon Integrated Systems [SiS] SiS961/2 SMBus Controller
00:02.2 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 07)
00:02.3 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 07)
00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev d0)
00:02.6 Modem: Silicon Integrated Systems [SiS] AC'97 Modem Controller (rev a0)
00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] AC'97 Sound Controller (rev a0)
00:08.0 CardBus bridge: ENE Technology Inc CB1410 Cardbus Controller
01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 65x/M650/740 PCI/AGP VGA Display Adapter

root@zelda:~# lsmod | grep -i ata
ata_generic             8324  0 
pata_acpi               8320  0 
pata_sis               15236  5 
libata                159472  3 ata_generic,pata_acpi,pata_sis
scsi_mod              151436  5 sbp2,sg,sd_mod,sr_mod,libata

-- 
Wrong UDMA mode due to error in 40/80 wire cable detection
https://bugs.launchpad.net/bugs/195221
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Status in Ubuntu: Invalid
Status in “linux” source package in Ubuntu: Fix Released
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