Alan Stern wrote:
Robert, it would help somewhat if you could build a kernel with
CONFIG_USB_DEBUG turned on and post the dmesg log showing what happens
when you plug in one of those non-working devices.
Sorry, yes I should have done that before...
Yes, in principle Linux can be made to switch over to full speed when
high speed fails. But there are limitations: The switchover would work
only for devices plugged directly into the computer, not for devices
plugged into a high-speed hub. And some Linux systems (not regular
PCs) have EHCI implementations that don't allow such a switch -- or
if they do, I'm not aware of how to accomplish it.
Interesting, I have a USB 2.0 hub, but have not tried it, mainly because
I need to find a power supply for it first.
But regardless if the hub works as USB 2.0 or 1.1, it could be that
another hub behaves differently, just like I have one USB 2.0 memory key
that still works as such.
BTW, depending on the kind of failure the system does not keep
retrying indefinitely. It gives up after four attempts.
Alan Stern
***USB related boot messages with CONFIG_USB_DEBUG enabled
Jun 8 23:33:30 localhost kernel: USB Universal Host Controller
Interface driver v3.0
Jun 8 23:33:30 localhost kernel: ACPI: PCI Interrupt 0000:00:1d.0[A] ->
Link [LNKA] -> GSI 11 (level, low) -> IRQ 11
Jun 8 23:33:30 localhost kernel: uhci_hcd 0000:00:1d.0: UHCI Host
Controller
Jun 8 23:33:30 localhost kernel: uhci_hcd 0000:00:1d.0: new USB bus
registered, assigned bus number 1
Jun 8 23:33:30 localhost kernel: uhci_hcd 0000:00:1d.0: detected 2 ports
Jun 8 23:33:30 localhost kernel: uhci_hcd 0000:00:1d.0: irq 11, io base
0x00001800
Jun 8 23:33:30 localhost kernel: usb usb1: Product: UHCI Host Controller
Jun 8 23:33:30 localhost kernel: usb usb1: Manufacturer: Linux
2.6.22-rc4 uhci_hcd
Jun 8 23:33:30 localhost kernel: usb usb1: SerialNumber: 0000:00:1d.0
Jun 8 23:33:30 localhost kernel: usb usb1: configuration #1 chosen from
1 choice
Jun 8 23:33:30 localhost kernel: hub 1-0:1.0: USB hub found
Jun 8 23:33:30 localhost kernel: hub 1-0:1.0: 2 ports detected
Jun 8 23:33:30 localhost kernel: ACPI: PCI Interrupt Link [LNKD]
enabled at IRQ 11
Jun 8 23:33:30 localhost kernel: ACPI: PCI Interrupt 0000:00:1d.1[B] ->
Link [LNKD] -> GSI 11 (level, low) -> IRQ 11
Jun 8 23:33:30 localhost kernel: uhci_hcd 0000:00:1d.1: UHCI Host
Controller
Jun 8 23:33:30 localhost kernel: uhci_hcd 0000:00:1d.1: new USB bus
registered, assigned bus number 2
Jun 8 23:33:30 localhost kernel: uhci_hcd 0000:00:1d.1: detected 2 ports
Jun 8 23:33:30 localhost kernel: uhci_hcd 0000:00:1d.1: irq 11, io base
0x00001820
Jun 8 23:33:30 localhost kernel: usb usb2: Product: UHCI Host Controller
Jun 8 23:33:30 localhost kernel: usb usb2: Manufacturer: Linux
2.6.22-rc4 uhci_hcd
Jun 8 23:33:30 localhost kernel: usb usb2: SerialNumber: 0000:00:1d.1
Jun 8 23:33:31 localhost kernel: usb usb2: configuration #1 chosen from
1 choice
Jun 8 23:33:31 localhost rpcbind: cannot create socket for udp6
Jun 8 23:33:31 localhost kernel: hub 2-0:1.0: USB hub found
Jun 8 23:33:31 localhost kernel: hub 2-0:1.0: 2 ports detected
Jun 8 23:33:31 localhost rpcbind: cannot create socket for tcp6
Jun 8 23:33:31 localhost kernel: ACPI: PCI Interrupt Link [LNKC]
enabled at IRQ 11
Jun 8 23:33:31 localhost kernel: ACPI: PCI Interrupt 0000:00:1d.2[C] ->
Link [LNKC] -> GSI 11 (level, low) -> IRQ 11
Jun 8 23:33:31 localhost kernel: uhci_hcd 0000:00:1d.2: UHCI Host
Controller
Jun 8 23:33:31 localhost kernel: uhci_hcd 0000:00:1d.2: new USB bus
registered, assigned bus number 3
Jun 8 23:33:31 localhost kernel: uhci_hcd 0000:00:1d.2: detected 2 ports
Jun 8 23:33:31 localhost kernel: uhci_hcd 0000:00:1d.2: irq 11, io base
0x00001840
Jun 8 23:33:31 localhost kernel: usb usb3: Product: UHCI Host Controller
Jun 8 23:33:31 localhost kernel: usb usb3: Manufacturer: Linux
2.6.22-rc4 uhci_hcd
Jun 8 23:33:31 localhost kernel: usb usb3: SerialNumber: 0000:00:1d.2
Jun 8 23:33:31 localhost kernel: usb usb3: configuration #1 chosen from
1 choice
Jun 8 23:33:31 localhost kernel: hub 3-0:1.0: USB hub found
Jun 8 23:33:31 localhost kernel: hub 3-0:1.0: 2 ports detected
Jun 8 23:33:31 localhost kernel: ACPI: PCI Interrupt Link [LNKH]
enabled at IRQ 11
Jun 8 23:33:31 localhost kernel: ACPI: PCI Interrupt 0000:00:1d.7[D] ->
Link [LNKH] -> GSI 11 (level, low) -> IRQ 11
Jun 8 23:33:31 localhost kernel: ehci_hcd 0000:00:1d.7: EHCI Host
Controller
Jun 8 23:33:31 localhost kernel: ehci_hcd 0000:00:1d.7: new USB bus
registered, assigned bus number 4
Jun 8 23:33:31 localhost kernel: ehci_hcd 0000:00:1d.7: debug port 1
Jun 8 23:33:31 localhost kernel: ehci_hcd 0000:00:1d.7: irq 11, io mem
0xc0000000
Jun 8 23:33:31 localhost kernel: ehci_hcd 0000:00:1d.7: USB 2.0
started, EHCI 1.00, driver 10 Dec 2004
Jun 8 23:33:31 localhost kernel: usb usb4: Product: EHCI Host Controller
Jun 8 23:33:31 localhost kernel: usb usb4: Manufacturer: Linux
2.6.22-rc4 ehci_hcd
Jun 8 23:33:31 localhost kernel: usb usb4: SerialNumber: 0000:00:1d.7
Jun 8 23:33:31 localhost kernel: usb usb4: configuration #1 chosen from
1 choice
Jun 8 23:33:31 localhost kernel: hub 4-0:1.0: USB hub found
*** Plug USB 2.0 128MB memory key (with ehci-hcd loaded)
Jun 8 23:35:14 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 14
Jun 8 23:35:18 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 35
Jun 8 23:35:19 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 39
Jun 8 23:35:19 localhost kernel: ehci_hcd 0000:00:1d.7: port 4 reset
error -110
Jun 8 23:35:19 localhost kernel: hub 4-0:1.0: hub_port_status failed
(err = -32)
Jun 8 23:35:19 localhost kernel: ehci_hcd 0000:00:1d.7: port 4 reset
error -110
Jun 8 23:35:19 localhost kernel: hub 4-0:1.0: hub_port_status failed
(err = -32)
Jun 8 23:35:19 localhost kernel: hub 4-0:1.0: Cannot enable port 4.
Maybe the USB cable is bad?
Jun 8 23:35:19 localhost kernel: ehci_hcd 0000:00:1d.7: port 4 reset
error -110
Jun 8 23:35:19 localhost kernel: hub 4-0:1.0: hub_port_status failed
(err = -32)
Jun 8 23:35:22 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 55
Jun 8 23:35:23 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 56
Jun 8 23:35:23 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 60
Jun 8 23:35:24 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 66
Jun 8 23:35:25 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 69
Jun 8 23:35:28 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 87
Jun 8 23:35:28 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 88
Jun 8 23:35:29 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 93
Jun 8 23:35:29 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 95
Jun 8 23:35:31 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 105
Jun 8 23:35:35 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 3
Jun 8 23:35:36 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 11
Jun 8 23:35:37 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 16
Jun 8 23:35:38 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 18
Jun 8 23:35:40 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 31
Jun 8 23:35:41 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 36
Jun 8 23:35:42 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 43
Jun 8 23:35:43 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 49
Jun 8 23:35:44 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 55
Jun 8 23:35:44 localhost kernel: ehci_hcd 0000:00:1d.7: port 4 reset
error -110
Jun 8 23:35:44 localhost kernel: hub 4-0:1.0: hub_port_status failed
(err = -32)
Jun 8 23:35:45 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 58
Jun 8 23:35:46 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 59
Jun 8 23:35:50 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 87
Jun 8 23:35:51 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 92
Jun 8 23:35:52 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 99
Jun 8 23:35:53 localhost kernel: ehci_hcd 0000:00:1d.7: port 4 reset
error -110
Jun 8 23:35:53 localhost kernel: hub 4-0:1.0: hub_port_status failed
(err = -32)
Jun 8 23:35:54 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 105
Jun 8 23:35:54 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 106
Jun 8 23:35:54 localhost kernel: ehci_hcd 0000:00:1d.7: port 4 reset
error -110
Jun 8 23:35:54 localhost kernel: hub 4-0:1.0: hub_port_status failed
(err = -32)
Jun 8 23:35:56 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 112
Jun 8 23:35:58 localhost kernel: usb 4-4: new high speed USB device
using ehci_hcd and address 122
*** unplug USB key, rmmod ehci-hcd
Jun 8 23:36:26 localhost kernel: ehci_hcd 0000:00:1d.7: remove, state 4
Jun 8 23:36:26 localhost kernel: usb usb4: USB disconnect, address 1
Jun 8 23:36:26 localhost kernel: ehci_hcd 0000:00:1d.7: USB bus 4
deregistered
Jun 8 23:36:26 localhost kernel: ACPI: PCI interrupt for device
0000:00:1d.7 disabled
*** plug USB key (without ehci-hcd)
Jun 8 23:36:41 localhost kernel: usb 2-2: new full speed USB device
using uhci_hcd and address 2
Jun 8 23:36:41 localhost kernel: usb 2-2: Product: IBM USB Memory Key
Jun 8 23:36:41 localhost kernel: usb 2-2: Manufacturer: IBM
Jun 8 23:36:41 localhost kernel: usb 2-2: configuration #1 chosen from
1 choice
Jun 8 23:36:41 localhost kernel: Initializing USB Mass Storage driver...
Jun 8 23:36:41 localhost kernel: scsi2 : SCSI emulation for USB Mass
Storage devices
Jun 8 23:36:41 localhost kernel: usbcore: registered new interface
driver usb-storage
Jun 8 23:36:41 localhost kernel: USB Mass Storage support registered.
Jun 8 23:36:46 localhost kernel: scsi 2:0:0:0: Direct-Access
IBM Memory Key 1.01 PQ: 0 ANSI: 0 CCS
Jun 8 23:36:46 localhost kernel: sd 2:0:0:0: [sdc] Attached SCSI
removable disk
Jun 8 23:36:46 localhost kernel: sd 2:0:0:0: Attached scsi generic sg2
type 0
Jun 8 23:36:47 localhost kernel: sd 2:0:0:0: [sdc] 256000 512-byte
hardware sectors (131 MB)
Jun 8 23:36:47 localhost kernel: sd 2:0:0:0: [sdc] Write Protect is off
Jun 8 23:36:47 localhost kernel: sd 2:0:0:0: [sdc] Assuming drive
cache: write through
Jun 8 23:36:47 localhost kernel: sd 2:0:0:0: [sdc] 256000 512-byte
hardware sectors (131 MB)
Jun 8 23:36:47 localhost kernel: sd 2:0:0:0: [sdc] Write Protect is off
Jun 8 23:36:47 localhost kernel: sd 2:0:0:0: [sdc] Assuming drive
cache: write through
Jun 8 23:36:47 localhost kernel: sdc: sdc1
Jun 8 23:36:48 localhost hald: mounted /dev/sdc1 on behalf of uid 0
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