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Vrenn
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Joined: 15 Dec 2004
Posts: 327
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 Posted: Sun Oct 23, 2011 7:05 am Post subject: [solved, I believe]USB 3.0 port only recognized as usb 2.0 |
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Hello dear Gentoo-experts!
I have just installed Gentoo on an new Laptop using the NEC usb-controller. The laptop has two usb-ports 2.0 on the right side (+ 1 esata) and two usb-ports on the left. now lsusb gives me following:
| Code: | Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub |
Where is my second usb3.0 port?
I plugged my WD-usb3hdd on the first port marked with the USB3-logo and it was just running at usb 2.0.
Kdeinfo just gives me following on the first hub port: | Code: | Hersteller: Linux 3.0.6-gentoo xhci_hcd
Seriennummer: 0000:19:00.0
Klasse 9 (Hub)
Unterklasse 0 (Unused)
Protokoll 0 (Full speed (or root) hub)
USB-Version 2.00
Anbieter-Kennung 0x1d6b
Produkt-Kennung 0x2
Revision 0.00
Geschwindigkeit 480 Mbit/s
Kanäle 2
Max. Paketgröße 64 |
The second usb 3.0 port works as expected.
lspci -v on my usb3 chip: | Code: | 19:00.0 USB Controller: NEC Corporation Device 0194 (rev 04) (prog-if 30)
Subsystem: Dell Device 0490
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at d2100000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [50] Power Management version 3
Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+
Capabilities: [90] MSI-X: Enable+ Count=8 Masked-
Capabilities: [a0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number ff-ff-ff-ff-ff-ff-ff-ff
Capabilities: [150] #18
Kernel driver in use: xhci_hcd |
using Linux version 3.0.6-gentoo (gcc version 4.5.3 (Gentoo 4.5.3-r1 p1.0, pie-0.4.5) )
The fist port is marked as a usb 3.0 port using the xhci driver working just with the usb 2.0 version. Why and how can I change that?
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With nice greetings
Vrenn
Last edited by Vrenn on Tue Oct 25, 2011 6:18 pm; edited 1 time in total |
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Vrenn
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Joined: 15 Dec 2004
Posts: 327
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| Posted: Sun Oct 23, 2011 8:24 am Post subject: |
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Ok, plugged it again and again, now both ports let the drive shine under the usb 3.0 xhci, still there is is a usb 2.0 xhci host. Ist that normal? then my error was just a "drive not recognized as 3.0"-issue.
So there is a chance that the xhci 2.0 host ist normal.
USB 3.0 are taken by the 3.0-xhci-host
USB 2.0 are taken by the 2.0-xhci-host
Ist that correct?
ps: do I still need the ohci/uhci driver. heard that ehci-driver still needs them?
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Vrenn |
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Vrenn
Guru
Joined: 15 Dec 2004
Posts: 327
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| Posted: Mon Oct 24, 2011 4:49 pm Post subject: |
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Another day same hassle. My drive is only listend under the usb 2.0 xhci-port. Why is there no usb-support like it was last weekend?
Does somebody else have those problems?
My drive: Western Digital Technologies, Inc. 2TB usb 3.0 drive.[/code]
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Vrenn |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Tue Oct 25, 2011 1:40 am Post subject: |
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| Try making xhci built in and ehci a module so the USB3 driver sees the ports first. You don't need ohci or uhci, that's for USB1-only stuff. |
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Vrenn
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Joined: 15 Dec 2004
Posts: 327
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| Posted: Tue Oct 25, 2011 6:16 pm Post subject: |
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I don't believe that marking ehci as a module (before both where in) is the solution. The drive was always listened unter the xhci-tree, but sometimes at 2.0 speed.
Anyway I tried it and after about 20 reconnects the usb3-hitrate is still 100%...
I'll keep this some kernel versions. Lets see how it works 
Thanks for the tip!
PS: getting rid of ohci/uhci works too. But the kernel-info is somehow missunderstanding: | Quote: | CONFIG_USB_EHCI_HCD:
EHCI controllers are packaged with "companion" host controllers (OHCI
or UHCI) to handle USB 1.1 devices connected to root hub ports. Ports
will connect to EHCI if the device is high speed, otherwise they
connect to a companion controller. If you configure EHCI, you should
probably configure the OHCI (for NEC and some other vendors) USB Host
Controller Driver or UHCI (for Via motherboards) Host Controller
Driver too. |
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Vrenn |
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Vrenn
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Joined: 15 Dec 2004
Posts: 327
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| Posted: Sun Nov 20, 2011 5:58 pm Post subject: |
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USB 2.0 with module 
It was just luck until now.
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Vrenn |
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