USB transfer speeds incredibly slow

apachedude · 10-20-2005, 03:45 PM

Edit: I submitted this post in the middle of some Googling, and after Googling a bit more, I found a more thorough discussion here. https://bugzilla.novell.com/show_bug.cgi?id=105871

I'm leaving this post up because I'm sure others have had this problem.

I have USB 2.0 ports that worked fine with SuSE 9.3, but with SuSE 10.0, the transfer rates are occurring at around 10 KB/s. Of course, this is utterly unacceptable. I don't know how to fix this problem, but I would greatly appreciate if someone can help me: as a starting point, here's the output of lsmod.

Quote:

Module Size Used by
uhci_hcd 32016 0
ohci1394 32820 0
ipw2200 171656 0
nls_utf8 2048 0
subfs 7552 1
cpufreq_ondemand 6044 1
cpufreq_userspace 4444 0
cpufreq_powersave 1792 0
speedstep_centrino 7508 1
freq_table 4612 1 speedstep_centrino
ipv6 242752 10
snd_pcm_oss 59168 0
snd_mixer_oss 18944 1 snd_pcm_oss
snd_seq 51984 0
snd_seq_device 8588 1 snd_seq
button 7056 0
battery 10244 0
ac 5252 0
edd 9824 0
af_packet 21384 2
joydev 9408 0
pcmcia 37176 0
usbhid 43616 0
ieee80211 51140 1 ipw2200
ieee1394 97208 1 ohci1394
snd_intel8x0 33408 1
ieee80211_crypt 5508 1 ieee80211
yenta_socket 23820 1
rsrc_nonstatic 12800 1 yenta_socket
pcmcia_core 39952 3 pcmcia,yenta_socket,rsrc_nonstatic
ehci_hcd 32136 0
b44 21636 0
firmware_class 9856 2 ipw2200,pcmcia
snd_ac97_codec 90876 1 snd_intel8x0
mii 5504 1 b44
i2c_i801 8844 0
i2c_core 20368 1 i2c_i801
generic 4484 0 [permanent]
ide_core 122380 1 generic
usbcore 112640 4 uhci_hcd,usbhid,ehci_hcd
snd_ac97_bus 2432 1 snd_ac97_codec
snd_pcm 93064 3 snd_pcm_oss,snd_intel8x0,snd_ac97_codec
snd_timer 24452 2 snd_seq,snd_pcm
snd 60420 10 snd_pcm_oss,snd_mixer_oss,snd_seq,snd_seq_device,snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer
soundcore 9184 1 snd
snd_page_alloc 10632 2 snd_intel8x0,snd_pcm
intel_agp 22044 1
agpgart 33096 1 intel_agp
pci_hotplug 26164 0
parport_pc 38980 0
lp 11460 0
parport 33864 2 parport_pc,lp
nls_iso8859_1 4096 1
nls_cp437 5760 1
vfat 12800 1
fat 49692 1 vfat
dm_mod 54972 0
reiserfs 250480 1
sr_mod 16420 0
cdrom 36896 1 sr_mod
fan 4996 0
thermal 14472 0
processor 24252 2 speedstep_centrino,thermal
sg 35744 0
ata_piix 9860 3
ahci 12292 0
libata 48516 2 ata_piix,ahci
sd_mod 18576 4
scsi_mod 131304 5 sr_mod,sg,ahci,libata,sd_mod

EclipseAgent · 10-20-2005, 04:04 PM

Search for Syncranization (damn I butchered that). You'll find the fix.

apachedude · 10-20-2005, 04:15 PM

Until a kernel patch is released, we'll have to mount USB devices nosync (async?) to get high transfer rates.

I don't know anything about HAL, so I don't want to touch that if at all possible. However, from my fstab:

Quote:

sysfs /sys sysfs noauto 0 0
usbfs /proc/bus/usb usbfs noauto 0 0

Can I just change noauto to noauto,async? Would that work or break anything?

denning · 10-20-2005, 06:16 PM

Has anyone using 10.1 alpha experienced these USB 2.0 transfer problems?