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Date: Sat, 09 Jun 2007 00:19:52 +0200 From: Robert de Rooy <robert.de.rooy@...il.com> To: Alan Stern <stern@...land.harvard.edu> CC: Jiri Kosina <jikos@...os.cz>, Greg KH <greg@...ah.com>, Joel.Becker@...cle.com, USB development list <linux-usb-devel@...ts.sourceforge.net>, Kernel development list <linux-kernel@...r.kernel.org> Subject: Re: [linux-usb-devel] ThinkPad T41 - Strange USB 2.0 behaviour 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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