Hi all,
I am connected to internet with IPWireless modem (it's using UMTS-TDD
technology) using 1Mb/s tariff. But on Linux, its bandwidth never gets
over 56 kB/s. I tried it on Windows and it works on full speed,
sometimes even over 110 kB/s. I searched a lot about this issue
because I am using Linux 99% of time. I found some posts aged approx.
5 years ago, that some people had this issue with 3G modems and it was
due to low buffer size in 'usb-serial' driver which wasn't meant for
those speed. As workaround was often recommended some dirty hack to
increase buffer size by patching usb-serial or they advise to use
'option' driver. But 'option' didn't work for me - I used the 'echo
0bc3 0001 > /sys/.../new_id' thing and it didn't even connect. I think
that 'option' driver is really for classic 3G FDD modems, but not TDD.
I had opportunity to try it on 5 kernel versions - from 2.6.26 to
3.0.0-rc5 and it's always the same.
Any advices how to solve this? If the bottleneck is really the buffer
size, isn't it possible to set it somehow in the 'ipw' driver? Maybe
it is simple to find, but I can't code :-(. Few days ago I found this
patch[1] - maybe something similar could be done for 'ipw' driver too?
'lsusb -v' and 'lspci -v' attached.
Any help much appreciated.
Thank you
Michal Hybner
[1] http://lwn.net/Articles/379140/
# lsusb -v
Bus 002 Device 003: ID 0bc3:0001 IPWireless, Inc. UMTS-TDD (TD-CDMA) modem
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0bc3 IPWireless, Inc.
idProduct 0x0001 UMTS-TDD (TD-CDMA) modem
bcdDevice 0.01
iManufacturer 1 IPWireless, Inc.
iProduct 2 IPWireless Modem
iSerial 3 358106000487309
bNumConfigurations 2
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 4 IPWireless (500mA)
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 5 Modem
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 2
iConfiguration 6 IPWireless (100mA)
bmAttributes 0xc0
Self Powered
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 5 Modem
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Device Status: 0x0000
(Bus Powered)
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 3.00
iManufacturer 3 Linux 3.0.0-rc5-amd64 ohci_hcd
iProduct 2 OHCI Host Controller
iSerial 1 0000:00:02.0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
Hub Descriptor:
bLength 11
bDescriptorType 41
nNbrPorts 10
wHubCharacteristic 0x0002
No power switching (usb 1.0)
Ganged overcurrent protection
bPwrOn2PwrGood 1 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00 0x00
PortPwrCtrlMask 0xff 0xff
Hub Port Status:
Port 1: 0000.0303 lowspeed power enable connect
Port 2: 0000.0103 power enable connect
Port 3: 0000.0100 power
Port 4: 0000.0100 power
Port 5: 0000.0100 power
Port 6: 0000.0100 power
Port 7: 0000.0100 power
Port 8: 0000.0100 power
Port 9: 0000.0100 power
Port 10: 0000.0100 power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0002 2.0 root hub
bcdDevice 3.00
iManufacturer 3 Linux 3.0.0-rc5-amd64 ehci_hcd
iProduct 2 EHCI Host Controller
iSerial 1 0000:00:02.1
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
Hub Descriptor:
bLength 11
bDescriptorType 41
nNbrPorts 10
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 10 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00 0x00
PortPwrCtrlMask 0xff 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Port 3: 0000.0100 power
Port 4: 0000.0100 power
Port 5: 0000.0100 power
Port 6: 0000.0100 power
Port 7: 0000.0100 power
Port 8: 0000.0100 power
Port 9: 0000.0100 power
Port 10: 0000.0100 power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
################################################################################
# lspci -v
00:00.0 Memory controller: nVidia Corporation CK804 Memory Controller (rev a3)
Subsystem: Micro-Star International Co., Ltd. Device 7135
Flags: bus master, 66MHz, fast devsel, latency 0
Capabilities: [44] HyperTransport: Slave or Primary Interface
Capabilities: [e0] HyperTransport: MSI Mapping Enable+ Fixed-
00:01.0 ISA bridge: nVidia Corporation CK804 ISA Bridge (rev a3)
Subsystem: Micro-Star International Co., Ltd. Device 7135
Flags: bus master, 66MHz, fast devsel, latency 0
00:01.1 SMBus: nVidia Corporation CK804 SMBus (rev a2)
Subsystem: Micro-Star International Co., Ltd. Device 7135
Flags: 66MHz, fast devsel, IRQ 10
I/O ports at ff00 [size=32]
I/O ports at 4c00 [size=64]
I/O ports at 4c40 [size=64]
Capabilities: [44] Power Management version 2
Kernel driver in use: nForce2_smbus
00:02.0 USB Controller: nVidia Corporation CK804 USB Controller (rev a2) (prog-if 10 [OHCI])
Subsystem: Micro-Star International Co., Ltd. Device 7135
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 23
Memory at febff000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2
Kernel driver in use: ohci_hcd
00:02.1 USB Controller: nVidia Corporation CK804 USB Controller (rev a3) (prog-if 20 [EHCI])
Subsystem: Micro-Star International Co., Ltd. Device 7135
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 22
Memory at feb00000 (32-bit, non-prefetchable) [size=256]
Capabilities: [44] Debug port: BAR=1 offset=0098
Capabilities: [80] Power Management version 2
Kernel driver in use: ehci_hcd
00:06.0 IDE interface: nVidia Corporation CK804 IDE (rev f2) (prog-if 8a [Master SecP PriP])
Subsystem: Micro-Star International Co., Ltd. Device 7135
Flags: bus master, 66MHz, fast devsel, latency 0
[virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
[virtual] Memory at 000003f0 (type 3, non-prefetchable) [size=1]
[virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
[virtual] Memory at 00000370 (type 3, non-prefetchable) [size=1]
I/O ports at fb00 [size=16]
Capabilities: [44] Power Management version 2
Kernel driver in use: pata_amd
00:07.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev f3) (prog-if 85 [Master SecO PriO])
Subsystem: Micro-Star International Co., Ltd. Device 7135
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21
I/O ports at 09f0 [size=8]
I/O ports at 0bf0 [size=4]
I/O ports at 0970 [size=8]
I/O ports at 0b70 [size=4]
I/O ports at f600 [size=16]
Memory at febfc000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2
Kernel driver in use: sata_nv
00:08.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev f3) (prog-if 85 [Master SecO PriO])
Subsystem: Micro-Star International Co., Ltd. Device 7135
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 20
I/O ports at 09e0 [size=8]
I/O ports at 0be0 [size=4]
I/O ports at 0960 [size=8]
I/O ports at 0b60 [size=4]
I/O ports at f100 [size=16]
Memory at febfb000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2
Kernel driver in use: sata_nv
00:09.0 PCI bridge: nVidia Corporation CK804 PCI Bridge (rev a2) (prog-if 01 [Subtractive decode])
Flags: bus master, 66MHz, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fe900000-fe9fffff
Prefetchable memory behind bridge: fea00000-feafffff
00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a3)
Subsystem: Micro-Star International Co., Ltd. Device 7135
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 23
Memory at febfa000 (32-bit, non-prefetchable) [size=4K]
I/O ports at f000 [size=8]
Capabilities: [44] Power Management version 2
Kernel driver in use: forcedeth
00:0b.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 0000c000-0000cfff
Memory behind bridge: fe800000-fe8fffff
Prefetchable memory behind bridge: 00000000fe700000-00000000fe7fffff
Capabilities: [40] Power Management version 2
Capabilities: [48] MSI: Enable+ Count=1/2 Maskable- 64bit+
Capabilities: [58] HyperTransport: MSI Mapping Enable- Fixed-
Capabilities: [80] Express Root Port (Slot+), MSI 00
Capabilities: [100] Virtual Channel
Kernel driver in use: pcieport
00:0c.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 0000b000-0000bfff
Memory behind bridge: fe600000-fe6fffff
Prefetchable memory behind bridge: 00000000fe500000-00000000fe5fffff
Capabilities: [40] Power Management version 2
Capabilities: [48] MSI: Enable+ Count=1/2 Maskable- 64bit+
Capabilities: [58] HyperTransport: MSI Mapping Enable- Fixed-
Capabilities: [80] Express Root Port (Slot+), MSI 00
Capabilities: [100] Virtual Channel
Kernel driver in use: pcieport
00:0d.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
I/O behind bridge: 0000a000-0000afff
Memory behind bridge: fe400000-fe4fffff
Prefetchable memory behind bridge: 00000000fe300000-00000000fe3fffff
Capabilities: [40] Power Management version 2
Capabilities: [48] MSI: Enable+ Count=1/2 Maskable- 64bit+
Capabilities: [58] HyperTransport: MSI Mapping Enable- Fixed-
Capabilities: [80] Express Root Port (Slot+), MSI 00
Capabilities: [100] Virtual Channel
Kernel driver in use: pcieport
00:0e.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=05, subordinate=05, sec-latency=0
I/O behind bridge: 00009000-00009fff
Memory behind bridge: f4000000-fbffffff
Prefetchable memory behind bridge: 00000000d8000000-00000000dfffffff
Capabilities: [40] Power Management version 2
Capabilities: [48] MSI: Enable+ Count=1/2 Maskable- 64bit+
Capabilities: [58] HyperTransport: MSI Mapping Enable- Fixed-
Capabilities: [80] Express Root Port (Slot+), MSI 00
Capabilities: [100] Virtual Channel
Kernel driver in use: pcieport
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
Flags: fast devsel
Capabilities: [80] HyperTransport: Host or Secondary Interface
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
Flags: fast devsel
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
Flags: fast devsel
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
Flags: fast devsel
Kernel driver in use: k8temp
01:08.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 07)
Subsystem: Creative Labs SBLive! 5.1 Model SB0100
Flags: bus master, medium devsel, latency 32, IRQ 18
I/O ports at df00 [size=32]
Capabilities: [dc] Power Management version 1
Kernel driver in use: EMU10K1_Audigy
01:08.1 Input device controller: Creative Labs SB Live! Game Port (rev 07)
Subsystem: Creative Labs Gameport Joystick
Flags: bus master, medium devsel, latency 32
I/O ports at de00 [size=8]
Capabilities: [dc] Power Management version 1
Kernel driver in use: Emu10k1_gameport
05:00.0 VGA compatible controller: nVidia Corporation NV43 [GeForce 6600 GT] (rev a2) (prog-if 00 [VGA controller])
Subsystem: CardExpert Technology Device 0403
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at f4000000 (32-bit, non-prefetchable) [size=64M]
Memory at d8000000 (64-bit, prefetchable) [size=128M]
Memory at fa000000 (64-bit, non-prefetchable) [size=16M]
[virtual] Expansion ROM at f8000000 [disabled] [size=128K]
Capabilities: [60] Power Management version 2
Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [128] Power Budgeting <?>
Kernel driver in use: nouveau
