Re: kernel: unable to enumerate USB device on port
On Sun, Jun 28, 2009 at 3:03 PM, Peter Boyp...@barkhof.uni-bremen.de wrote: There are several entries in bugzilla. The causes are not definitely determined yet. Have a look at the bug entries. PB Thanks! -- It's hard to be free... but I love to struggle! Renich Bon Ciric http://www.woralelandia.com/ http://www.introbella.com/ -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: kernel: unable to enumerate USB device on port
Am Mittwoch, den 24.06.2009, 23:07 -0500 schrieb Renich Bon Ciric: I've got tons of these and unlimited resource too... Jun 24 23:05:12 introdesk kernel: hub 2-0:1.0: unable to enumerate USB device on port 2 Any idea of what is causing this? Is it a know bug? There are several entries in bugzilla. The causes are not definitely determined yet. Have a look at the bug entries. PB -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
kernel: unable to enumerate USB device on port
I've got tons of these and unlimited resource too... Jun 24 23:05:12 introdesk kernel: hub 2-0:1.0: unable to enumerate USB device on port 2 Any idea of what is causing this? Is it a know bug? -- It's hard to be free... but I love to struggle! Renich Bon Ciric http://www.woralelandia.com/ http://www.introbella.com/ -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: unable to enumerate USB device
Mikkel L. Ellertson wrote: Jim wrote: To get a hub to work with all devices, hubs must have their own power source externally. Hubs that get there power source from the computer are the ones that give you problems, because of voltage drop across the cable to computer. Considering the amount of current we are talking about, I do not think voltage drop is a problem. On the other hand, with a bus powered hub, all the devices, plus the hub itself, are limited to the max current of the port you are plugged into. A limit of 500ma/port is common, but it could be less. Voltage drop = current x resistance .5v = 500ma x 1 ohms. Mikkel I have had a number of bad experiences with bus powered hub, devices that would not work in hub I plugged directly to computer and they work fine, so i purchased external powered hubs and have had no more problems As far as the voltage drop goes it depends a lot on how the USB device was designed as to how much current it's going to draw. I'm quite familiar with OHMS Law. E -- IxR -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: unable to enumerate USB device
Jim wrote: Mikkel L. Ellertson wrote: Jim wrote: To get a hub to work with all devices, hubs must have their own power source externally. Hubs that get there power source from the computer are the ones that give you problems, because of voltage drop across the cable to computer. Considering the amount of current we are talking about, I do not think voltage drop is a problem. On the other hand, with a bus powered hub, all the devices, plus the hub itself, are limited to the max current of the port you are plugged into. A limit of 500ma/port is common, but it could be less. Voltage drop = current x resistance .5v = 500ma x 1 ohms. Mikkel I have had a number of bad experiences with bus powered hub, devices that would not work in hub I plugged directly to computer and they work fine, so i purchased external powered hubs and have had no more problems As far as the voltage drop goes it depends a lot on how the USB device was designed as to how much current it's going to draw. I'm quite familiar with OHMS Law. E -- IxR But the voltage drop, when you get one, is not caused by the cable. There is not enough resistance in the cable to cause this. You run into capacitance problems degrading the signal long before you get enough resistance to matter. On the other hand, there is a current limit in the USB driver circuitry. If you try and exceed this, you may get voltage drop, or the port may shut off. I remember a discussion a while back about the USB drivers in Linux enforcing the port limits while Windows didn't, so devices that would work in Windows wouldn't work in Linux when plugged in the same way. Linux was shutting down the port. Each USB device is supposed to report the maximum power requirements as part of its ID response. (USB powered devices like lights and fans don't report anything...) The reason bus powered hubs don't work with a lot of devices is that you have to share the bus power from the computer with all the devices plugged in, as well as the hub itself. All it takes is one high load device to max out the port the hub is plugged into. This is why self powered hubs are preferred. Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup! signature.asc Description: OpenPGP digital signature -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: unable to enumerate USB device
Jim wrote: To get a hub to work with all devices, hubs must have their own power source externally. Hubs that get there power source from the computer are the ones that give you problems, because of voltage drop across the cable to computer. Considering the amount of current we are talking about, I do not think voltage drop is a problem. On the other hand, with a bus powered hub, all the devices, plus the hub itself, are limited to the max current of the port you are plugged into. A limit of 500ma/port is common, but it could be less. Voltage drop = current x resistance .5v = 500ma x 1 ohms. Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup! signature.asc Description: OpenPGP digital signature -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: unable to enumerate USB device
2009/1/14 jack wallen jlwal...@monkeypantz.net: Jan 14 17:17:16 localhost kernel: hub 1-0:1.0: unable to enumerate USB device on port 7 https://bugzilla.redhat.com/show_bug.cgi?id=446845 maybe this is relevant? -- Suvayu Open source is the future. It sets us free. -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: unable to enumerate USB device
On Fri, 2009-01-16 at 10:14 -0500, Jim wrote: Hubs that get there power source from the computer are the ones that give you problems, because of voltage drop across the cable to computer. Not just the potential of that happening, but the host mayn't be able to supply the amount of current desired (not a voltage drop, per se, but a supply issue - if the host was only designed to supply so much, then that's all it's going to give). Whereas a powered hub has its own specifications, which may support more power. -- [...@localhost ~]$ uname -r 2.6.27.9-73.fc9.i686 Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists. -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
Re: unable to enumerate USB device
jack wallen wrote: After an update (fedora 10) none of my USB devices are recognized. This is what i get from dmesg: Jan 14 17:17:13 localhost kernel: usb 1-7: new full speed USB device using ohci_hcd and address 20 Jan 14 17:17:13 localhost kernel: usb 1-7: device descriptor read/64, error -62 Jan 14 17:17:14 localhost kernel: usb 1-7: device descriptor read/64, error -62 Jan 14 17:17:14 localhost kernel: usb 1-7: new full speed USB device using ohci_hcd and address 21 Jan 14 17:17:14 localhost kernel: usb 1-7: device descriptor read/64, error -62 Jan 14 17:17:14 localhost kernel: usb 1-7: device descriptor read/64, error -62 Jan 14 17:17:15 localhost kernel: usb 1-7: new full speed USB device using ohci_hcd and address 22 Jan 14 17:17:15 localhost kernel: usb 1-7: device not accepting address 22, error -62 Jan 14 17:17:15 localhost kernel: usb 1-7: new full speed USB device using ohci_hcd and address 23 Jan 14 17:17:16 localhost kernel: usb 1-7: device not accepting address 23, error -62 Jan 14 17:17:16 localhost kernel: hub 1-0:1.0: unable to enumerate USB device on port 7 I have googled the issue but am only finding instances where this causes issue with booting but not an inability to mount usb devices. Can anyone shed any light on this issue? Thank you. jack Have you tried to plug directly into the computer? Front and back connectors? I have a few devices that don't want to work through a hub. Just something to test. -- Robin Laing -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
unable to enumerate USB device
After an update (fedora 10) none of my USB devices are recognized. This is what i get from dmesg: Jan 14 17:17:13 localhost kernel: usb 1-7: new full speed USB device using ohci_hcd and address 20 Jan 14 17:17:13 localhost kernel: usb 1-7: device descriptor read/64, error -62 Jan 14 17:17:14 localhost kernel: usb 1-7: device descriptor read/64, error -62 Jan 14 17:17:14 localhost kernel: usb 1-7: new full speed USB device using ohci_hcd and address 21 Jan 14 17:17:14 localhost kernel: usb 1-7: device descriptor read/64, error -62 Jan 14 17:17:14 localhost kernel: usb 1-7: device descriptor read/64, error -62 Jan 14 17:17:15 localhost kernel: usb 1-7: new full speed USB device using ohci_hcd and address 22 Jan 14 17:17:15 localhost kernel: usb 1-7: device not accepting address 22, error -62 Jan 14 17:17:15 localhost kernel: usb 1-7: new full speed USB device using ohci_hcd and address 23 Jan 14 17:17:16 localhost kernel: usb 1-7: device not accepting address 23, error -62 Jan 14 17:17:16 localhost kernel: hub 1-0:1.0: unable to enumerate USB device on port 7 I have googled the issue but am only finding instances where this causes issue with booting but not an inability to mount usb devices. Can anyone shed any light on this issue? Thank you. jack -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
unable to enumerate USB device
I am getting strange messages in the logs: hub 1-0:1.0: unable to enumerate USB device on port 5 hub 1-0:1.0: unable to enumerate USB device on port 6 hub 2-0:1.0: unable to enumerate USB device on port 4 Everything works fine, but I would like to know what causes them. According to what I found on Google, I can safely ignore them. Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup! signature.asc Description: OpenPGP digital signature -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
Re: unable to enumerate USB device
On Tue, 29 Jul 2008 11:37:36 -0500 Mikkel L. Ellertson [EMAIL PROTECTED] wrote: Everything works fine, but I would like to know what causes them. According to what I found on Google, I can safely ignore them. As near as I can tell from my googling, they are warning messages from code that got carried away and warning about things it shouldn't have been warning about - things that weren't errors at all. Supposedly there is already a patch that will make them go away, but I guess it hasn't worked its way through to the fedora kernels yet. -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
Re: unable to enumerate USB device
On Tue, 2008-07-29 at 11:37 -0500, Mikkel L. Ellertson wrote: I am getting strange messages in the logs: Just the once, when you boot up? hub 1-0:1.0: unable to enumerate USB device on port 5 hub 1-0:1.0: unable to enumerate USB device on port 6 hub 2-0:1.0: unable to enumerate USB device on port 4 Everything works fine, but I would like to know what causes them. According to what I found on Google, I can safely ignore them. If it's only as you boot up, you can probably ignore them. I get the same, and it's my computer not working out what to do with the mouse, keyboard, built-in trackpad, etc., as it boots. Yet they all work fine a bit later on. Fedora 9 seems a bit flighty with devices. They don't just get discovered and work, it gets in a tizzy about things not working the instant it notices them, then they work a few more moments later. -- [EMAIL PROTECTED] ~]$ uname -r 2.6.25.11-97.fc9.i686 Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists. -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
Re: unable to enumerate USB device
Tim wrote: If it's only as you boot up, you can probably ignore them. I get the same, and it's my computer not working out what to do with the mouse, keyboard, built-in trackpad, etc., as it boots. Yet they all work fine a bit later on. Fedora 9 seems a bit flighty with devices. They don't just get discovered and work, it gets in a tizzy about things not working the instant it notices them, then they work a few more moments later. This is still an F8 machine. I get them both at bootup, and sometimes when I plug in a new USB device. Jul 29 12:03:20 mikkel kernel: hub 1-0:1.0: unable to enumerate USB device on port 6 Jul 29 12:03:21 mikkel kernel: usb 4-3: new full speed USB device using ohci_hcd and address 13 Jul 29 12:03:21 mikkel kernel: usb 4-3: configuration #1 chosen from 1 choice Jul 29 12:03:21 mikkel kernel: usb 4-3: New USB device found, idVendor=0830, idProduct=0050 Jul 29 12:03:21 mikkel kernel: usb 4-3: New USB device strings: Mfr=1, Product=2, SerialNumber= Jul 29 12:03:21 mikkel kernel: usb 4-3: Product: Palm Handheld Jul 29 12:03:21 mikkel kernel: usb 4-3: Manufacturer: Palm, Inc. Jul 29 12:03:21 mikkel kernel: usb 4-3: SerialNumber: PalmSN12345678 Jul 29 12:04:33 mikkel kernel: usb 4-3: USB disconnect, address 13 Taking a deeper look at things, I noticed that hub 1 is a version 2.0 hub, and hub 4 is a version 1.10 hub. These are both internal hubs, so I wounder if they are using the same socket? Could it be that the high speed hub (v2.0) tries to talk to the device, and when it can not, it hands it off to the full speed hub (v1.10)? Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup! signature.asc Description: OpenPGP digital signature -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
Re: unable to enumerate USB device
On Tue, 2008-07-29 at 12:35 -0500, Mikkel L. Ellertson wrote: This is still an F8 machine. I get them both at bootup, and sometimes when I plug in a new USB device. I haven't tried 8, I skipped from 7 to 9. Jul 29 12:03:20 mikkel kernel: hub 1-0:1.0: unable to enumerate USB device on port 6 Jul 29 12:03:21 mikkel kernel: usb 4-3: new full speed USB device using ohci_hcd and address 13 Jul 29 12:03:21 mikkel kernel: usb 4-3: configuration #1 chosen from 1 choice Jul 29 12:03:21 mikkel kernel: usb 4-3: New USB device found, idVendor=0830, idProduct=0050 Jul 29 12:03:21 mikkel kernel: usb 4-3: New USB device strings: Mfr=1, Product=2, SerialNumber= Jul 29 12:03:21 mikkel kernel: usb 4-3: Product: Palm Handheld Jul 29 12:03:21 mikkel kernel: usb 4-3: Manufacturer: Palm, Inc. Jul 29 12:03:21 mikkel kernel: usb 4-3: SerialNumber: PalmSN12345678 Jul 29 12:04:33 mikkel kernel: usb 4-3: USB disconnect, address 13 Taking a deeper look at things, I noticed that hub 1 is a version 2.0 hub, and hub 4 is a version 1.10 hub. These are both internal hubs, so I wounder if they are using the same socket? Could it be that the high speed hub (v2.0) tries to talk to the device, and when it can not, it hands it off to the full speed hub (v1.10)? USB starts off with version 1, at the slowest speed (the lowest common denominator), then sees if it can shift up speeds and to using version 2. This appears as the host device changing from 1 to 2, not just the thing plugged into it. -- [EMAIL PROTECTED] ~]$ uname -r 2.6.25.11-97.fc9.i686 Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists. -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
