I have a USB device which internally has a USB 2.0 hub with two high speed devices attached, i am connecting it to my laptop which has USB 2.0 support...
The problem is that the USB 2 hub in the device allways gets attached to one of the UHCI hubs instead of the EHCI root hub. Is there a way to force it to attach as USB 2.0 and not fall back to UHCI?
The device works fine in windows at high speed...
below are the output of lspci and usb/devices with the device attached (the NEC hub is the one internal to the device)
any assistance will be much appreciated, thanks, Toby
lspci ---------------------------
0000:00:00.0 Host bridge: Intel Corp. 82855PM Processor to I/O Controller (rev 03) 0000:00:01.0 PCI bridge: Intel Corp. 82855PM Processor to AGP Controller (rev 03) 0000:00:1d.0 USB Controller: Intel Corp. 82801DB (ICH4) USB UHCI #1 (rev 01) 0000:00:1d.1 USB Controller: Intel Corp. 82801DB (ICH4) USB UHCI #2 (rev 01) 0000:00:1d.2 USB Controller: Intel Corp. 82801DB (ICH4) USB UHCI #3 (rev 01) 0000:00:1d.7 USB Controller: Intel Corp. 82801DB (ICH4) USB2 EHCI Controller (rev 01) 0000:00:1e.0 PCI bridge: Intel Corp. 82801BAM/CAM PCI Bridge (rev 81) 0000:00:1f.0 ISA bridge: Intel Corp. 82801DBM LPC Interface Controller (rev 01) 0000:00:1f.1 IDE interface: Intel Corp. 82801DBM (ICH4) Ultra ATA Storage Controller (rev 01) 0000:00:1f.3 SMBus: Intel Corp. 82801DB/DBM (ICH4) SMBus Controller (rev 01) 0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801DB (ICH4) AC'97 Audio Controller (rev 01) 0000:00:1f.6 Modem: Intel Corp. 82801DB (ICH4) AC'97 Modem Controller (rev 01) 0000:01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500] 0000:02:00.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller (rev 80) 0000:02:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 20) 0000:02:02.0 Network controller: Intel Corp. PRO/Wireless LAN 2100 3B Mini PCI Adapter (rev 04)
/proc/bus/usb/device ----------------------------------------------------- T: Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 B: Alloc= 11/900 us ( 1%), #Int= 1, #Iso= 0 D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=0000 ProdID=0000 Rev= 2.06 S: Manufacturer=Linux 2.6.7-tc14 uhci_hcd S: Product=Intel Corp. 82801DB (ICH4) USB UHCI #3 S: SerialNumber=0000:00:1d.2 C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms
T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 8 Spd=12 MxCh= 4 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=0409 ProdID=0058 Rev= 1.00 S: Manufacturer=NEC Corporation S: Product=USB2.0 Hub Controller C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl=255ms
T: Bus=03 Lev=02 Prnt=08 Port=02 Cnt=01 Dev#= 9 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=11a6 ProdID=00c3 Rev= 1.10 S: Manufacturer=VRmagic S: Product=VRmC-3 S: SerialNumber=000070 C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=280mA I: If#= 0 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=vrmagic E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
T: Bus=03 Lev=02 Prnt=08 Port=03 Cnt=02 Dev#= 10 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=11a6 ProdID=00c3 Rev= 1.10 S: Manufacturer=VRmagic S: Product=VRmC-3 S: SerialNumber=000050 C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=280mA I: If#= 0 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=vrmagic E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=0000 ProdID=0000 Rev= 2.06 S: Manufacturer=Linux 2.6.7-tc14 uhci_hcd S: Product=Intel Corp. 82801DB (ICH4) USB UHCI #2 S: SerialNumber=0000:00:1d.1 C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=0000 ProdID=0000 Rev= 2.06 S: Manufacturer=Linux 2.6.7-tc14 uhci_hcd S: Product=Intel Corp. 82801DB (ICH4) USB UHCI #1 S: SerialNumber=0000:00:1d.0 C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms
T: Bus=04 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 6 B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS= 8 #Cfgs= 1 P: Vendor=0000 ProdID=0000 Rev= 2.06 C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=256ms
0000:02:04.0 CardBus bridge: ENE Technology Inc CB1410 Cardbus Controller
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