Comment 17 for bug 195221

>>One note that I find interesting to add.
>>
>>My disks are PATA. With the Gutsy kernel, I had the correct performance - they were recognized ad hda and hdb.
>>
>>Now, with Hardy, they are recognized as sda and sdb. This could mean that the problem lie into the libata kernel part (IMHO).
>>
>>Furthermore, in dmesg I have the same output as presented by jap1968:
>>
>>limited to UDMA/33 due to 40-wire cable

I can report I have the same problem:

s0l0ne@solzero:~$ sudo hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads: 424 MB in 2.00 seconds = 211.95 MB/sec
 Timing buffered disk reads: 38 MB in 3.01 seconds = 12.61 MB/sec

s0l0ne@solzero:~$ sudo hdparm /dev/sda

/dev/sda:
 IO_support = 0 (default)
16-bit)
 HDIO_GET_UNMASKINTR failed: Inappropriate ioctl for device
 HDIO_GET_DMA failed: Inappropriate ioctl for device
 HDIO_GET_KEEPSETTINGS failed: Inappropriate ioctl for device
 readonly = 0 (off)
 readahead = 256 (on)
 geometry = 4864/255/63, sectors = 78140160, start = 0

s0l0ne@solzero:~$ lsmod
Module Size Used by
snd_rtctimer 4640 0
xfs 571288 1
nls_cp437 6656 0
wlan_wep 8064 1
isofs 36388 0
af_packet 23812 4
udf 88612 0
i915 32512 2
drm 82580 3 i915
ppdev 10372 0
speedstep_lib 6532 0
cpufreq_conservative 8712 0
cpufreq_powersave 2688 0
cpufreq_ondemand 9740 0
cpufreq_userspace 5284 0
cpufreq_stats 7104 0
freq_table 5536 2 cpufreq_ondemand,cpufreq_stats
sbs 15112 0
sbshc 7680 1 sbs
dock 11280 0
iptable_filter 3840 0
ip_tables 14820 1 iptable_filter
x_tables 16132 1 ip_tables
lp 12324 0
wlan_scan_sta 14720 1
ath_rate_sample 14336 1
joydev 13120 0
ath_pci 101024 0
wlan 207728 5 wlan_wep,wlan_scan_sta,ath_rate_sample,ath_pci
ath_hal 192592 3 ath_rate_sample,ath_pci
pcmcia 40876 0
parport_pc 36260 1
parport 37832 3 ppdev,lp,parport_pc
snd_intel8x0 35356 3
evdev 13056 6
snd_ac97_codec 101028 1 snd_intel8x0
snd_usb_audio 83936 1
snd_pcm_oss 42144 0
snd_mixer_oss 17920 1 snd_pcm_oss
ac97_bus 3072 1 snd_ac97_codec
psmouse 40336 0
serio_raw 7940 0
snd_pcm 78596 5 snd_intel8x0,snd_ac97_codec,snd_usb_audio,snd_pcm_oss
snd_usb_lib 18432 1 snd_usb_audio
snd_hwdep 10500 1 snd_usb_audio
snd_seq_dummy 4868 0
pcspkr 4224 0
yenta_socket 27276 2
rsrc_nonstatic 13696 1 yenta_socket
pcmcia_core 40596 3 pcmcia,yenta_socket,rsrc_nonstatic
snd_seq_oss 35584 0
snd_seq_midi 9376 0
snd_rawmidi 25760 2 snd_usb_lib,snd_seq_midi
snd_seq_midi_event 8320 2 snd_seq_oss,snd_seq_midi
snd_seq 54224 9 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
container 5632 0
snd_timer 24836 3 snd_rtctimer,snd_pcm,snd_seq
snd_seq_device 9612 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
video 19856 0
output 4736 1 video
snd 56996 23 snd_rtctimer,snd_intel8x0,snd_ac97_codec,snd_usb_audio,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_usb_lib,snd_hwdep,snd_seq_dummy,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 8800 1 snd
snd_page_alloc 11400 2 snd_intel8x0,snd_pcm
shpchp 34452 0
pci_hotplug 30880 1 shpchp
iTCO_wdt 13092 0
iTCO_vendor_support 4868 1 iTCO_wdt
battery 14212 0
ac 6916 0
button 9232 0
intel_agp 25492 1
agpgart 34760 3 drm,intel_agp
ext3 136712 1
jbd 48404 1 ext3
mbcache 9600 1 ext3
usbhid 31872 0
hid 38784 1 usbhid
usb_storage 73664 0
sg 36880 0
libusual 19108 1 usb_storage
sr_mod 17956 0
cdrom 37408 1 sr_mod
sd_mod 30720 4
ata_piix 19588 3
ata_generic 8324 0
pata_acpi 8320 0
e100 37388 0
mii 6400 1 e100
libata 159344 3 ata_piix,ata_generic,pata_acpi
ehci_hcd 37900 0
uhci_hcd 27024 0
scsi_mod 151436 5 usb_storage,sg,sr_mod,sd_mod,libata
usbcore 146028 8 snd_usb_audio,snd_usb_lib,usbhid,usb_storage,libusual,ehci_hcd,uhci_hcd
thermal 16796 0
processor 36872 2 thermal
fan 5636 0
fbcon 42912 0
tileblit 3456 1 fbcon
font 9472 1 fbcon
bitblit 6784 1 fbcon
softcursor 3072 1 bitblit
fuse 50580 1