RE: [gentoo-user] Intermittent USB device failures

[Mike Edenfield]

> From: Volker Armin Hemmann [mailto:volkerarmin@××××××××××.com]
> Sent: Monday, August 18, 2014 8:01 PM
>
> Am 17.08.2014 um 12:33 schrieb Mick:
> > On Sunday 17 Aug 2014 02:56:58 Mike Edenfield wrote:
> >
> >> When I `modprobe -r ochi_pci` while the system is operating normally,
> >> I see all four modules (ohci-pci, ohci-hcd, ehci-pci, and ehci-hcd)
> >> unloading
> >> properly:
> >>
> >> [25603.370000] ohci-pci 0000:00:0b.0: remove, state 1 [25603.370395]
> >> usb usb2: USB disconnect, device number 1 [25603.370414] usb 2-6: USB
> >> disconnect, device number 2 [25603.383451] usb 2-7: USB disconnect,
> >> device number 3 [25603.384217] ohci-pci 0000:00:0b.0: USB bus 2
> >> deregistered [25603.384597] ehci-pci 0000:00:0b.1: remove, state 1
> >> [25603.384611] usb usb1: USB disconnect, device number 1
> >> [25603.386306] ehci-pci 0000:00:0b.1: USB bus 1 deregistered
> >>
> >> If I try to do the same thing after the mouse has locked up, modprobe
> >> stalls trying to unload the first module:
> >>
> >> wombat kutulu # modprobe -r -v ohci_pci rmmod ohci_pci
> >>
> >> wombat kutulu # dmesg
> >> [38091.627389] ohci-pci 0000:00:0b.0: remove, state 1 [38091.627400]
> >> usb usb2: USB disconnect, device number 1
> >>
> >> Any ideas what's going wrong here? Any chance I can salvage this
> hardware?
> > Do you need ohci-pci?  Have you tried running a kernel without it and
> > check if your hardware still works as intended?
> >
> I would try that too,,,

> From: Volker Armin Hemmann [mailto:volkerarmin@××××××××××.com]
> Sent: Monday, August 18, 2014 8:01 PM
>
> Am 17.08.2014 um 12:33 schrieb Mick:
> > On Sunday 17 Aug 2014 02:56:58 Mike Edenfield wrote:
> >
> >> When I `modprobe -r ochi_pci` while the system is operating normally,
> >> I see all four modules (ohci-pci, ohci-hcd, ehci-pci, and ehci-hcd)
> >> unloading
> >> properly:
> >>
> >> [25603.370000] ohci-pci 0000:00:0b.0: remove, state 1 [25603.370395]
> >> usb usb2: USB disconnect, device number 1 [25603.370414] usb 2-6: USB
> >> disconnect, device number 2 [25603.383451] usb 2-7: USB disconnect,
> >> device number 3 [25603.384217] ohci-pci 0000:00:0b.0: USB bus 2
> >> deregistered [25603.384597] ehci-pci 0000:00:0b.1: remove, state 1
> >> [25603.384611] usb usb1: USB disconnect, device number 1
> >> [25603.386306] ehci-pci 0000:00:0b.1: USB bus 1 deregistered
> >>
> >> If I try to do the same thing after the mouse has locked up, modprobe
> >> stalls trying to unload the first module:
> >>
> >> wombat kutulu # modprobe -r -v ohci_pci rmmod ohci_pci
> >>
> >> wombat kutulu # dmesg
> >> [38091.627389] ohci-pci 0000:00:0b.0: remove, state 1 [38091.627400]
> >> usb usb2: USB disconnect, device number 1
> >>
> >> Any ideas what's going wrong here? Any chance I can salvage this
> hardware?
> > Do you need ohci-pci?  Have you tried running a kernel without it and
> > check if your hardware still works as intended?
> >
> I would try that too,,,

I booted a kernel without ohci-pci and no, it doesn't quite work, though I'm pretty confused by it. With OHCI removed from my kernel, neither my mouse nor my keyboard register as attached, but it doesn't seem to matter which ports I put them in. I have 6 USB ports, 2 pair on the motherboard and a third pair in the front of the case, and I expected that the back four would be OCHI and the front two EHCI (or something similr), but they don't seem to follow that pattern. Anywhere I plug my flash drive or camera in, it gets routed through the ECHI controller, while anywhere I plug my keyboard or mouse in gets routed through the OHCI controller. For example, I have my keyword and a flash drive plugged into the two front-mounted ports, and when I boot, I get this:
 
With OHCI:

kutulu@wombat ~ $ dmesg | grep usb
[    0.074276] usbcore: registered new interface driver usbfs
[    0.074460] usbcore: registered new interface driver hub
[    0.074658] usbcore: registered new device driver usb
[    0.245705] usbcore: registered new interface driver usbhid
[    0.245879] usbhid: USB HID core driver
[    7.420249] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    7.420426] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.420735] usb usb1: Product: EHCI Host Controller
[    7.420908] usb usb1: Manufacturer: Linux 3.16.0-gentoo-wombat-3 ehci_hcd
[    7.421089] usb usb1: SerialNumber: 0000:00:0b.1
[    7.631143] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[    7.631328] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    7.631618] usb usb2: Product: OHCI PCI host controller
[    7.631789] usb usb2: Manufacturer: Linux 3.16.0-gentoo-wombat-3 ohci_hcd
[    7.631964] usb usb2: SerialNumber: 0000:00:0b.0
[    7.753477] usb 1-7: new high-speed USB device number 2 using ehci-pci
[    7.968033] usb 1-7: New USB device found, idVendor=14cd, idProduct=6500
[    7.968179] usb 1-7: New USB device strings: Mfr=1, Product=3, SerialNumber=2
[    7.968312] usb 1-7: Product: USB 2.0 Flash drive
[    7.968442] usb 1-7: Manufacturer: MOAI INC.
[    7.968568] usb 1-7: SerialNumber: 4FD30F4B00C5
[    8.165667] usb-storage 1-7:1.0: USB Mass Storage device detected
[    8.174052] scsi4 : usb-storage 1-7:1.0
[    8.174281] usbcore: registered new interface driver usb-storage
[    8.380031] usb 2-8: new low-speed USB device number 2 using ohci-pci
[    8.717028] usb 2-8: New USB device found, idVendor=413c, idProduct=2105
[    8.717058] usb 2-8: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    8.717068] usb 2-8: Product: Dell USB Keyboard
[    8.717075] usb 2-8: Manufacturer: Dell
[    8.746601] input: Dell Dell USB Keyboard as /devices/pci0000:00/0000:00:0b.0/usb2/2-8/2-8:1.0/0003:413C:2105.0001/input/input4
[    8.746836] hid-generic 0003:413C:2105.0001: input,hidraw0: USB HID v1.10 Keyboard [Dell Dell USB Keyboard] on usb-0000:00:0b.0-8/input0
kutulu@wombat ~ $

Without OHCI:

kutulu@wombat ~ $ dmesg | grep usb
[    0.076245] usbcore: registered new interface driver usbfs
[    0.076428] usbcore: registered new interface driver hub
[    0.076626] usbcore: registered new device driver usb
[    0.247749] usbcore: registered new interface driver usbhid
[    0.247922] usbhid: USB HID core driver
[    6.991241] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    6.991417] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    6.991726] usb usb1: Product: EHCI Host Controller
[    6.991900] usb usb1: Manufacturer: Linux 3.16.0-gentoo-wombat-5 ehci_hcd
[    6.992078] usb usb1: SerialNumber: 0000:00:0b.1
[    7.295804] usb 1-7: new high-speed USB device number 2 using ehci-pci
[    7.413707] usb 1-7: New USB device found, idVendor=14cd, idProduct=6500
[    7.413881] usb 1-7: New USB device strings: Mfr=1, Product=3, SerialNumber=2
[    7.414047] usb 1-7: Product: USB 2.0 Flash drive
[    7.414205] usb 1-7: Manufacturer: MOAI INC.
[    7.414371] usb 1-7: SerialNumber: 4FD30F4B00C5
[    7.870672] usb-storage 1-7:1.0: USB Mass Storage device detected
[    7.871215] scsi4 : usb-storage 1-7:1.0
[    7.871425] usbcore: registered new interface driver usb-storage
kutulu@wombat ~ $

Is that normal?