Problem ------- USB pen is not always detected. The device is found 1-3 times for 10 tries of connecting device to computer.
The device is quite new, so I have not yet searched backwards for a kernel detecting it always, if there is any. Software -------- Debian unstable, 2.6.11-rc4 from kernel.org without preempt. Hardware: Acer Ferrari 3000 laptop ---------------------------------- 0000:00:00.0 Host bridge: VIA Technologies, Inc. VT8378 [KM400] Chipset Host Bridge 0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8235 PCI Bridge 0000:00:07.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller (rev 02) 0000:00:08.0 FireWire (IEEE 1394): Texas Instruments TSB43AB21 IEEE-1394a-2000 Controller (PHY/Link) 0000:00:09.0 Network controller: Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller (rev 03) 0000:00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80) 0000:00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80) 0000:00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80) 0000:00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82) 0000:00:11.0 ISA bridge: VIA Technologies, Inc. VT8235 ISA Bridge 0000:00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) 0000:00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 50) 0000:00:11.6 Communication controller: VIA Technologies, Inc. Intel 537 [AC97 Modem] (rev 80) 0000:00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 74) 0000:01:00.0 VGA compatible controller: ATI Technologies Inc RV250 5c61 [Radeon Mobility 9200 M9+] (rev 01) Problem device: Buffalo Clipdrive 128MB --------------------------------------- /proc/bus/usb/devices when device is working: T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 9 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=0ea0 ProdID=2168 Rev= 2.00 S: Manufacturer=BUFFALO S: Product=ClipDrive S: SerialNumber=A1200000000125C5 C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=83(I) Atr=03(Int.) MxPS= 2 Ivl=125us There is one other device always on bus, internal card reader: T: Bus=04 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=16 #Cfgs= 1 P: Vendor=0483 ProdID=1307 Rev= 1.80 S: Manufacturer=Generic S: Product=USB Mass Storage Device S: SerialNumber=ABCDEF0123456789 C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms /var/log/messages ----------------- OK case: Feb 26 15:47:19 khlaptop kernel: usb 2-2: new full speed USB device using uhci_hcd and address 7 Feb 26 15:48:00 khlaptop kernel: usb 1-2: new high speed USB device using ehci_hcd and address 7 Feb 26 15:48:00 khlaptop kernel: usb 1-2: Product: ClipDrive Feb 26 15:48:00 khlaptop kernel: usb 1-2: Manufacturer: BUFFALO Feb 26 15:48:00 khlaptop kernel: usb 1-2: SerialNumber: A1200000000125C5 Feb 26 15:48:01 khlaptop kernel: scsi1 : SCSI emulation for USB Mass Storage devices Feb 26 15:48:01 khlaptop usb.agent[5158]: usb-storage: already loaded Feb 26 15:48:06 khlaptop kernel: Vendor: BUFFALO Model: ClipDrive Rev: 2.00 Feb 26 15:48:06 khlaptop kernel: Type: Direct-Access ANSI SCSI revision: 02 Feb 26 15:48:06 khlaptop kernel: sdb: Unit Not Ready, sense: Feb 26 15:48:06 khlaptop kernel: : Current: sense key=0x6 Feb 26 15:48:06 khlaptop kernel: ASC=0x28 ASCQ=0x0 Feb 26 15:48:06 khlaptop kernel: SCSI device sdb: 256000 512-byte hdwr sectors (131 MB) Feb 26 15:48:06 khlaptop kernel: sdb: Write Protect is off Feb 26 15:48:06 khlaptop kernel: SCSI device sdb: 256000 512-byte hdwr sectors (131 MB) Feb 26 15:48:06 khlaptop kernel: sdb: Write Protect is off Feb 26 15:48:06 khlaptop kernel: /dev/scsi/host1/bus0/target0/lun0: p1 Feb 26 15:48:06 khlaptop kernel: Attached scsi removable disk sdb at scsi1, channel 0, id 0, lun 0 Feb 26 15:48:07 khlaptop scsi.agent[5198]: disk at /devices/pci0000:00/0000:00:10.3/usb1/1-2/1-2:1.0/host1/target1:0:0/1:0:0:0 Error case: Feb 26 15:49:10 khlaptop kernel: usb 1-2: new high speed USB device using ehci_hcd and address 8 Feb 26 15:49:11 khlaptop kernel: usb 2-2: new full speed USB device using uhci_hcd and address 8 Feb 26 15:49:11 khlaptop kernel: usb 2-2: new full speed USB device using uhci_hcd and address 9 /var/log/debug with CONFIG_USB_DEBUG on --------------------------------------- OK case: Feb 26 15:48:00 khlaptop kernel: hub 1-0:1.0: state 5 ports 6 chg 0000 evt 0004 Feb 26 15:48:00 khlaptop kernel: ehci_hcd 0000:00:10.3: GetStatus port 2 status 001803 POWER sig=j CSC CONNECT Feb 26 15:48:00 khlaptop kernel: hub 1-0:1.0: port 2, status 0501, change 0001, 480 Mb/s Feb 26 15:48:00 khlaptop kernel: hub 1-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x501 Feb 26 15:48:00 khlaptop kernel: ehci_hcd 0000:00:10.3: port 2 high speed Feb 26 15:48:00 khlaptop kernel: ehci_hcd 0000:00:10.3: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT Feb 26 15:48:00 khlaptop kernel: ehci_hcd 0000:00:10.3: port 2 high speed Feb 26 15:48:00 khlaptop kernel: ehci_hcd 0000:00:10.3: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT Feb 26 15:48:00 khlaptop kernel: usb 1-2: new device strings: Mfr=1, Product=2, SerialNumber=3 Feb 26 15:48:00 khlaptop kernel: usb 1-2: default language 0x0409 Feb 26 15:48:00 khlaptop kernel: usb 1-2: hotplug Feb 26 15:48:00 khlaptop kernel: usb 1-2: adding 1-2:1.0 (config #1, interface 0) Feb 26 15:48:00 khlaptop kernel: usb 1-2:1.0: hotplug Feb 26 15:48:00 khlaptop kernel: usb-storage 1-2:1.0: usb_probe_interface Feb 26 15:48:00 khlaptop kernel: usb-storage 1-2:1.0: usb_probe_interface - got id Feb 26 15:48:01 khlaptop kernel: usb-storage: device found at 7 Feb 26 15:48:01 khlaptop kernel: usb-storage: waiting for device to settle before scanning Feb 26 15:48:06 khlaptop kernel: sdb: Mode Sense: 03 00 00 00 Feb 26 15:48:06 khlaptop kernel: sdb: Mode Sense: 03 00 00 00 Feb 26 15:48:06 khlaptop kernel: usb-storage: device scan complete Error case: Feb 26 15:49:10 khlaptop kernel: hub 1-0:1.0: state 5 ports 6 chg 0000 evt 0004 Feb 26 15:49:10 khlaptop kernel: ehci_hcd 0000:00:10.3: GetStatus port 2 status 001803 POWER sig=j CSC CONNECT Feb 26 15:49:10 khlaptop kernel: hub 1-0:1.0: port 2, status 0501, change 0001, 480 Mb/s Feb 26 15:49:10 khlaptop kernel: hub 1-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x501 Feb 26 15:49:10 khlaptop kernel: ehci_hcd 0000:00:10.3: port 2 high speed Feb 26 15:49:10 khlaptop kernel: ehci_hcd 0000:00:10.3: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT Feb 26 15:49:10 khlaptop kernel: ehci_hcd 0000:00:10.3: devpath 2 ep0in 3strikes Feb 26 15:49:10 khlaptop kernel: ehci_hcd 0000:00:10.3: port 2 full speed --> companion Feb 26 15:49:10 khlaptop kernel: ehci_hcd 0000:00:10.3: GetStatus port 2 status 003801 POWER OWNER sig=j CONNECT Feb 26 15:49:10 khlaptop kernel: uhci_hcd 0000:00:10.0: wakeup_hc Feb 26 15:49:10 khlaptop kernel: hub 2-0:1.0: state 5 ports 2 chg 0000 evt 0004 Feb 26 15:49:10 khlaptop kernel: uhci_hcd 0000:00:10.0: port 2 portsc 0093,00 Feb 26 15:49:10 khlaptop kernel: hub 2-0:1.0: port 2, status 0101, change 0001, 12 Mb/s Feb 26 15:49:11 khlaptop kernel: hub 2-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x101 Feb 26 15:49:11 khlaptop kernel: uhci_hcd 0000:00:10.0: uhci_result_control: failed with status 440000 Feb 26 15:49:11 khlaptop kernel: [df149240] link (1f1491b2) element (1f8a3040) Feb 26 15:49:11 khlaptop kernel: 0: [df8a3040] link (1f8a3080) e0 Stalled CRC/Timeo Length=7 MaxLen=7 DT0 EndPt=0 Dev=0, PID=2d(SETUP) (buf=0dd6e440) Feb 26 15:49:11 khlaptop kernel: 1: [df8a3080] link (1f8a30c0) e3 SPD Active Length=0 MaxLen=3f DT1 EndPt=0 Dev=0, PID=69(IN) (buf=0d9a2aa0) Feb 26 15:49:11 khlaptop kernel: 2: [df8a30c0] link (00000001) e3 IOC Active Length=0 MaxLen=7ff DT1 EndPt=0 Dev=0, PID=e1(OUT) (buf=00000000) Feb 26 15:49:11 khlaptop kernel: Feb 26 15:49:11 khlaptop kernel: uhci_hcd 0000:00:10.0: uhci_result_control: failed with status 440000 Feb 26 15:49:11 khlaptop kernel: [df149240] link (1f1491b2) element (1f8a3040) Feb 26 15:49:11 khlaptop kernel: 0: [df8a3040] link (1f8a3080) e0 Stalled CRC/Timeo Length=7 MaxLen=7 DT0 EndPt=0 Dev=0, PID=2d(SETUP) (buf=19db8ea0) Feb 26 15:49:11 khlaptop kernel: 1: [df8a3080] link (1f8a30c0) e3 SPD Active Length=0 MaxLen=3f DT1 EndPt=0 Dev=0, PID=69(IN) (buf=0d9a2aa0) Feb 26 15:49:11 khlaptop kernel: 2: [df8a30c0] link (00000001) e3 IOC Active Length=0 MaxLen=7ff DT1 EndPt=0 Dev=0, PID=e1(OUT) (buf=00000000) Feb 26 15:49:11 khlaptop kernel: Feb 26 15:49:11 khlaptop kernel: uhci_hcd 0000:00:10.0: uhci_result_control: failed with status 440000 Feb 26 15:49:11 khlaptop kernel: [df149240] link (1f1491b2) element (1f8a3040) Feb 26 15:49:11 khlaptop kernel: 0: [df8a3040] link (1f8a3080) e0 Stalled CRC/Timeo Length=7 MaxLen=7 DT0 EndPt=0 Dev=0, PID=2d(SETUP) (buf=0dd6e3e0) Feb 26 15:49:11 khlaptop kernel: 1: [df8a3080] link (1f8a30c0) e3 SPD Active Length=0 MaxLen=3f DT1 EndPt=0 Dev=0, PID=69(IN) (buf=0d9a2aa0) Feb 26 15:49:11 khlaptop kernel: 2: [df8a30c0] link (00000001) e3 IOC Active Length=0 MaxLen=7ff DT1 EndPt=0 Dev=0, PID=e1(OUT) (buf=00000000) Feb 26 15:49:11 khlaptop kernel: Feb 26 15:49:11 khlaptop kernel: uhci_hcd 0000:00:10.0: uhci_result_control: failed with status 440000 Feb 26 15:49:11 khlaptop kernel: [df149240] link (1f1491b2) element (1f8a3040) Feb 26 15:49:11 khlaptop kernel: 0: [df8a3040] link (1f8a3080) e0 Stalled CRC/Timeo Length=7 MaxLen=7 DT0 EndPt=0 Dev=0, PID=2d(SETUP) (buf=0dd6e3e0) Feb 26 15:49:11 khlaptop kernel: 1: [df8a3080] link (1f8a30c0) e3 SPD Active Length=0 MaxLen=3f DT1 EndPt=0 Dev=0, PID=69(IN) (buf=0d9a2aa0) Feb 26 15:49:11 khlaptop kernel: 2: [df8a30c0] link (00000001) e3 IOC Active Length=0 MaxLen=7ff DT1 EndPt=0 Dev=0, PID=e1(OUT) (buf=00000000) Feb 26 15:49:11 khlaptop kernel: Feb 26 15:49:12 khlaptop kernel: hub 2-0:1.0: state 5 ports 2 chg 0000 evt 0004 The difference seems to start from message "devpath 2 ep0in 3strikes": is there any way to get more debug info from that ? After that it seems that device is handed to uhci, but it wont work there either. The device itself works and I have used it successfully in many computers (linux too) and there has not been detection problems like this (or I have been very lucky). It also works in this computer, when detection works. I have also other USB 2.0 devices sometimes connected to this computer, external hard disk and external DVD-RW and they have worked normally. Maybe the difference is that they are in power on state (have external power supplies), when detection starts by plugging USB cable. -- Kari Hämeenaho ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. 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