I think this is due to it using a certain type of transfer that isn't
so well supported in EHCI.
On Sun, 20 Nov 2005, Andre Madeira wrote:
>
> I "fixed" the problem by compiling ehci_hcd as a module and
> unloading it before using the webcam. It works fine now.
> I saw somebody else had a problem in this list late last year:
> Subject: Problems with USB 2.0 and Dell APR (I8500) (2004-10-23 15:50).
>
> I don't mind unloading this module to get my webcam to work,
> however it would be interesting to know why.
>
> Thanks,
> Andre
>
> On Sun, 20 Nov 2005 21:57:24 -0500, Andre Madeira
> <[EMAIL PROTECTED]> wrote:
>
> >
> > Hi,
> >
> > I have an interesting problem -- or hopefully just a question.
> >
> > I have a Creative WebCam Live! and I'm trying to make it work on my Dell
> > 600m notebook. The camera actually works fine if I plug it in directly
> > into a notebook's USB port. However, I'd like the camera attached to my
> > Dell's Advanced Port Replicator (model PR01K), which is not working and
> > hence this e-mail.
> >
> > As you can see below, the port replicator has three 2.0 USB UHCI ports
> > and
> > one EHCI. For power reasons I am obviously connecting to the latter (I
> > also tried the other ones w/o success).
> >
> > Thus, I'd like to know if this is a *bug* or if simply the port
> > replicator
> > cannot support 'it' (for some reason I'd like to know). By 'it', I am
> > not sure if the problem is specific only to my webcam or it is a general
> > problem such as: 1.1 isoc transfers on 2.0 USB ports, etc. Note that the
> > webcam is a 1.1 USB device and the docking ports are 2.0. However, my
> > notebook ports are 2.0 too. In sum, I'm not sure how to present this
> > problem except to say that it doesn't work with my webcam.
> >
> > I've attached pretty much everything I could think of below. Even the
> > diff
> > of 'strace gqcam' between: attached to my notebook directly (working)
> > and attached to the docking station (not working).
> >
> > The error I get is a -ENOSYS (Function not implemented) as you can see
> > on the dmesg log and the 'strace gqcam' output. I don't know exactly
> > which 'function'(ality) it is actually trying to access.
> >
> > Any help would be appreciated. Thanks,
> > Andre
> >
> > # ---------------------------------------------------------------
> > # cat /proc/version
> > Linux version 2.6.13-suspend2-r4 ([EMAIL PROTECTED]) (gcc version
> > 3.4.3-20050110
> > (Gentoo 3.4.3.20050110-r2, ssp-3.4.3.20050110-0, pie-8.7.7)) #1 SMP Sat
> > Nov 19 20:19:51 EST 2005
> >
> > # ---------------------------------------------------------------
> > # sh scripts/ver_linux
> >
> > Linux zeco 2.6.13-suspend2-r4 #1 SMP Sat Nov 19 20:19:51 EST 2005 i686
> > Intel(R) Pentium(R) M processor 1.60GHz GenuineIntel GNU/Linux
> >
> > Gnu C 3.4.3-20050110
> > Gnu make 3.80
> > binutils 2.15.92.0.2
> > util-linux 2.12r
> > mount 2.12r
> > module-init-tools 3.0
> > e2fsprogs 1.38
> > reiserfsprogs 3.6.19
> > reiser4progs line
> > PPP 2.4.2
> > Linux C Library 2.3.5
> > Dynamic linker (ldd) 2.3.5
> > Procps 3.2.5
> > Net-tools 1.60
> > Kbd 1.12
> > Sh-utils 5.2.1
> > udev 068
> > Modules Loaded ipw2200 firmware_class spca5xx videodev tg3 evdev
> > snd_pcm_oss snd_mixer_oss snd_seq_oss snd_seq_midi_event snd_seq
> > snd_seq_device snd_intel8x0 snd_ac97_codec snd_pcm snd_timer snd
> > soundcore snd_page_alloc ieee80211 ieee80211_crypt fglrx intel_agp
> > agpgart
> >
> >
> >
> > # ---------------------------------------------------------------
> > # dmesg (after plugging-in the camera. camera is properly recognized)
> > [...]
> > usb 1-6.4: new full speed USB device using ehci_hcd and address 4
> > .../spca5xx.c: USB SPCA5XX camera found. Type Creative Live!
> > Zc301+Tas5130c
> > .../spca5xx.c: [spca5xx_probe:8652] Camera type JPEG
> > .../zc3xx.h: [zcxx_probeSensor:108] sensor answer1 0
> > .../zc3xx.h: [zcxx_probeSensor:160] sensor answervga 0
> > .../zc3xx.h: [zcxx_probeSensor:160] sensor answervga 0
> > .../zc3xx.h: [zcxx_probeSensor:160] sensor answervga 0
> > .../zc3xx.h: [zcxx_probeSensor:160] sensor answervga 0
> > .../zc3xx.h: [zcxx_probeSensor:160] sensor answervga 0
> > .../zc3xx.h: [zcxx_probeSensor:160] sensor answervga 0
> > .../zc3xx.h: [zcxx_probeSensor:160] sensor answervga 0
> > .../zc3xx.h: [zcxx_probeSensor:160] sensor answervga 0
> > .../zc3xx.h: [zc3xx_config:414] Find Sensor HV713(c)
> > .../spca5xx.c: [spca5xx_getcapability:2525] maxw 640 maxh 480 minw 176
> > minh 144
> > [...]
> >
> > # ---------------------------------------------------------------
> > # dmesg after trying to open the webcam (using gqcam)
> > [...]
> > .../spca5xx.c: init isoc: usb_submit_urb(0) ret -38
> > .../spca5xx.c: [spca5xx_open:4589] DEALLOC error on init_Isoc
> > [...]
> >
> >
> > # ---------------------------------------------------------------
> > # lspci -v
> > [...]
> > 0000:00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM
> > (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 01) (prog-if 00 [UHCI])
> > Subsystem: Dell: Unknown device 011e
> > Flags: bus master, medium devsel, latency 0, IRQ 11
> > I/O ports at bf80 [size=32]
> >
> > 0000:00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM
> > (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 01) (prog-if 00 [UHCI])
> > Subsystem: Dell: Unknown device 011e
> > Flags: bus master, medium devsel, latency 0, IRQ 11
> > I/O ports at bf40 [size=32]
> >
> > 0000:00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM
> > (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 01) (prog-if 00 [UHCI])
> > Subsystem: Dell: Unknown device 011e
> > Flags: bus master, medium devsel, latency 0, IRQ 11
> > I/O ports at bf20 [size=32]
> >
> > 0000:00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M)
> > USB2 EHCI Controller (rev 01) (prog-if 20 [EHCI])
> > Subsystem: Dell: Unknown device 011e
> > Flags: bus master, medium devsel, latency 0, IRQ 11
> > Memory at f4fffc00 (32-bit, non-prefetchable) [size=1K]
> > Capabilities: [50] Power Management version 2
> > Capabilities: [58] #0a [2080]
> > [...]
> >
> >
> > # ---------------------------------------------------------------
> > # diff between 'strace gqcam'. The first block is the 'working' part
> > (when attached to my notebook directly) and the second block is the
> > output when attached to my docking station.
> >
> > < lstat64("/etc/gtk/gtkrc", 0xbf9317fc) = -1 ENOENT (No such file or
> > directory)
> > < lstat64("/home/amadeira/.gtkrc", 0xbf9317fc) = -1 ENOENT (No such file
> > or directory)
> > < shmget(IPC_PRIVATE, 393216, IPC_CREAT|0777) = 17760259
> > < shmat(17760259, 0, 0)
> > < write(3, "\224\1\4\0\2\0\340\0\3\0\17\1\0rop+h\1\0", 20) = 20
> > < read(3,
> > "\1\1%\0\0\0\0\0\2\0\200\0\0\0\0\0\0\0\0\0\0\0\0\0\240\200"..., 32) = 32
> > < shmctl(17760259, IPC_64|IPC_RMID, 0) = 0
> > < open("/dev/video", O_RDWR) = 4
> > < futex(0x8058bac, FUTEX_WAKE, 1) = 0
> > ---
> >> lstat64("/etc/gtk/gtkrc", 0xbf98cebc) = -1 ENOENT (No such file or
> >> directory)
> >> lstat64("/home/amadeira/.gtkrc", 0xbf98cebc) = -1 ENOENT (No such file
> >> or directory)
> >> shmget(IPC_PRIVATE, 393216, IPC_CREAT|0777) = 1835010
> >> shmat(1835010, 0, 0) write(3,
> >> "\224\1\4\0\2\0\300\0\2\0\34\0\0rop+h\1\0", 20) = 20
> >> read(3, "\1\1%\0\0\0\0\0\2\0\200\0\0\0\0\0\0\0\0\0\0\0\0\0X\277"...,
> >> 32) = 32
> >> shmctl(1835010, IPC_64|IPC_RMID, 0) = 0
> >> open("/dev/video", O_RDWR) = -1 ENOSYS (Function not
> >> implemented)
> >
> >
> > # ---------------------------------------------------------------
> > # cat /proc/bus/usb/devices
> >
> > [...]
> > T: Bus=01 Lev=02 Prnt=02 Port=03 Cnt=01 Dev#= 4 Spd=12 MxCh= 0
> > D: Ver= 1.10 Cls=ff(vend.) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
> > P: Vendor=041e ProdID=4036 Rev= 1.00
> > S: Manufacturer=Creative Labs
> > S: Product=WebCam Live!
> > C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=160mA
> > I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
> > E: Ad=81(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
> > E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=10ms
> > I: If#= 0 Alt= 1 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
> > E: Ad=81(I) Atr=01(Isoc) MxPS= 128 Ivl=1ms
> > E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=10ms
> > I: If#= 0 Alt= 2 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
> > E: Ad=81(I) Atr=01(Isoc) MxPS= 192 Ivl=1ms
> > E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=10ms
> > I: If#= 0 Alt= 3 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
> > E: Ad=81(I) Atr=01(Isoc) MxPS= 256 Ivl=1ms
> > E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=10ms
> > I: If#= 0 Alt= 4 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
> > E: Ad=81(I) Atr=01(Isoc) MxPS= 384 Ivl=1ms
> > E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=10ms
> > I: If#= 0 Alt= 5 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
> > E: Ad=81(I) Atr=01(Isoc) MxPS= 512 Ivl=1ms
> > E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=10ms
> > I: If#= 0 Alt= 6 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
> > E: Ad=81(I) Atr=01(Isoc) MxPS= 768 Ivl=1ms
> > E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=10ms
> > I: If#= 0 Alt= 7 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=spca5xx
> > E: Ad=81(I) Atr=01(Isoc) MxPS=1023 Ivl=1ms
> > E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=10ms
> > [...]
> >
> >
> > # ---------------------------------------------------------------
> > # lsusb -v
> >
> > [...]
> > Bus 001 Device 003: ID 041e:4036 Creative Technology, Ltd
> > Device Descriptor:
> > bLength 18
> > bDescriptorType 1
> > bcdUSB 1.10
> > bDeviceClass 255 Vendor Specific Class
> > bDeviceSubClass 0
> > bDeviceProtocol 0
> > bMaxPacketSize0 8
> > idVendor 0x041e Creative Technology, Ltd
> > idProduct 0x4036
> > bcdDevice 1.00
> > iManufacturer 1 Creative Labs
> > iProduct 2 WebCam Live!
> > iSerial 0
> > bNumConfigurations 1
> > Configuration Descriptor:
> > bLength 9
> > bDescriptorType 2
> > wTotalLength 193
> > bNumInterfaces 1
> > bConfigurationValue 1
> > iConfiguration 0
> > bmAttributes 0x80
> > MaxPower 160mA
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 0
> > bAlternateSetting 0
> > bNumEndpoints 2
> > bInterfaceClass 255 Vendor Specific Class
> > bInterfaceSubClass 255 Vendor Specific Subclass
> > bInterfaceProtocol 255 Vendor Specific Protocol
> > iInterface 0
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x81 EP 1 IN
> > bmAttributes 1
> > Transfer Type Isochronous
> > Synch Type none
> > wMaxPacketSize 0
> > bInterval 1
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x82 EP 2 IN
> > bmAttributes 3
> > Transfer Type Interrupt
> > Synch Type none
> > wMaxPacketSize 8
> > bInterval 10
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 0
> > bAlternateSetting 1
> > bNumEndpoints 2
> > bInterfaceClass 255 Vendor Specific Class
> > bInterfaceSubClass 255 Vendor Specific Subclass
> > bInterfaceProtocol 255 Vendor Specific Protocol
> > iInterface 0
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x81 EP 1 IN
> > bmAttributes 1
> > Transfer Type Isochronous
> > Synch Type none
> > wMaxPacketSize 128
> > bInterval 1
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x82 EP 2 IN
> > bmAttributes 3
> > Transfer Type Interrupt
> > Synch Type none
> > wMaxPacketSize 8
> > bInterval 10
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 0
> > bAlternateSetting 2
> > bNumEndpoints 2
> > bInterfaceClass 255 Vendor Specific Class
> > bInterfaceSubClass 255 Vendor Specific Subclass
> > bInterfaceProtocol 255 Vendor Specific Protocol
> > iInterface 0
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x81 EP 1 IN
> > bmAttributes 1
> > Transfer Type Isochronous
> > Synch Type none
> > wMaxPacketSize 192
> > bInterval 1
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x82 EP 2 IN
> > bmAttributes 3
> > Transfer Type Interrupt
> > Synch Type none
> > wMaxPacketSize 8
> > bInterval 10
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 0
> > bAlternateSetting 3
> > bNumEndpoints 2
> > bInterfaceClass 255 Vendor Specific Class
> > bInterfaceSubClass 255 Vendor Specific Subclass
> > bInterfaceProtocol 255 Vendor Specific Protocol
> > iInterface 0
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x81 EP 1 IN
> > bmAttributes 1
> > Transfer Type Isochronous
> > Synch Type none
> > wMaxPacketSize 256
> > bInterval 1
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x82 EP 2 IN
> > bmAttributes 3
> > Transfer Type Interrupt
> > Synch Type none
> > wMaxPacketSize 8
> > bInterval 10
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 0
> > bAlternateSetting 4
> > bNumEndpoints 2
> > bInterfaceClass 255 Vendor Specific Class
> > bInterfaceSubClass 255 Vendor Specific Subclass
> > bInterfaceProtocol 255 Vendor Specific Protocol
> > iInterface 0
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x81 EP 1 IN
> > bmAttributes 1
> > Transfer Type Isochronous
> > Synch Type none
> > wMaxPacketSize 384
> > bInterval 1
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x82 EP 2 IN
> > bmAttributes 3
> > Transfer Type Interrupt
> > Synch Type none
> > wMaxPacketSize 8
> > bInterval 10
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 0
> > bAlternateSetting 5
> > bNumEndpoints 2
> > bInterfaceClass 255 Vendor Specific Class
> > bInterfaceSubClass 255 Vendor Specific Subclass
> > bInterfaceProtocol 255 Vendor Specific Protocol
> > iInterface 0
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x81 EP 1 IN
> > bmAttributes 1
> > Transfer Type Isochronous
> > Synch Type none
> > wMaxPacketSize 512
> > bInterval 1
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x82 EP 2 IN
> > bmAttributes 3
> > Transfer Type Interrupt
> > Synch Type none
> > wMaxPacketSize 8
> > bInterval 10
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 0
> > bAlternateSetting 6
> > bNumEndpoints 2
> > bInterfaceClass 255 Vendor Specific Class
> > bInterfaceSubClass 255 Vendor Specific Subclass
> > bInterfaceProtocol 255 Vendor Specific Protocol
> > iInterface 0
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x81 EP 1 IN
> > bmAttributes 1
> > Transfer Type Isochronous
> > Synch Type none
> > wMaxPacketSize 768
> > bInterval 1
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x82 EP 2 IN
> > bmAttributes 3
> > Transfer Type Interrupt
> > Synch Type none
> > wMaxPacketSize 8
> > bInterval 10
> > Interface Descriptor:
> > bLength 9
> > bDescriptorType 4
> > bInterfaceNumber 0
> > bAlternateSetting 7
> > bNumEndpoints 2
> > bInterfaceClass 255 Vendor Specific Class
> > bInterfaceSubClass 255 Vendor Specific Subclass
> > bInterfaceProtocol 255 Vendor Specific Protocol
> > iInterface 0
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x81 EP 1 IN
> > bmAttributes 1
> > Transfer Type Isochronous
> > Synch Type none
> > wMaxPacketSize 1023
> > bInterval 1
> > Endpoint Descriptor:
> > bLength 7
> > bDescriptorType 5
> > bEndpointAddress 0x82 EP 2 IN
> > bmAttributes 3
> > Transfer Type Interrupt
> > Synch Type none
> > wMaxPacketSize 8
> > bInterval 10
> > Language IDs: (length=4)
> > 0409 English(US)
> > [...]
>
>
>
>
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--
/------------------------------------+-------------------------\
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|http://www.slac.stanford.edu/~gowdy/ | 2575 Sand Hill Road, |
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