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#1 2021-02-21 17:33:28
- shoelesshunter
- Member
- From: USA
- Registered: 2014-05-18
- Posts: 289
lenovo ideapad L3400 usb issue
Just bought a Lenovo Ideapad L3400 Gaming laptop, and everything works out of the box flawlessly, but I noticed something strange.
The product is advertised as having 2 USB-A 3.0 ports and one Type-C (3.1). I am using KDE and kinforcenter shows this:
Manufacturer: Linux 5.10.16-arch1-1 xhci-hcd
Serial #: 0000:00:14.0
Class
9
(Hub)
Subclass
0
(Unused)
Protocol
0
(Full speed (or root) hub)
USB Version
2.00
Vendor ID
0x1d6b
(Linux Foundation)
Product ID
0x2
(2.0 root hub)
Revision
0.00
Speed
480 Mbit/s
Channels
16
Max. Packet Size
64Manufacturer: Linux 5.10.16-arch1-1 xhci-hcd
Serial #: 0000:00:14.0
Class
9
(Hub)
Subclass
0
(Unused)
Protocol
0
(Full speed (or root) hub)
USB Version
3.10
Vendor ID
0x1d6b
(Linux Foundation)
Product ID
0x3
(3.0 root hub)
Revision
0.00
Speed
10,000 Mbit/s
Channels
8 Meaning I have one 2.0 controlser and one 3.0 controller (I assume the type-C is type 3.0 here).
but
lshw | grep USB shows this:
description: USB controller
product: Cannon Lake PCH USB 3.1 xHCI Host ControllerMeaning I have just one 3.1 controller which is what I wanted to purchase.
Can someone help me make heads or tails of this?
Last edited by shoelesshunter (2021-02-21 17:34:29)
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#2 2021-02-21 18:48:38
- V1del
- Forum Moderator
- Registered: 2012-10-16
- Posts: 24,564
Re: lenovo ideapad L3400 usb issue
What's the output of lsusb ? Many systems often have an internal USB bus that's not exposed to the outside for things like the touchpad and the keyboard which is likely the USB 2 controller you're seeing.
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#3 2021-02-21 18:52:15
- bjornp_
- Member
- Registered: 2020-12-31
- Posts: 42
Re: lenovo ideapad L3400 usb issue
I also own the Lenovo L340. I specifically own the 81LK L340-15IRH variant.
My kinfocenter shows exactly the same thing. There's two xHCI Host Controllers in the left list, and clicking on them reveals one is USB 2 and one is USB 3.2. I do not know why it is showing this, as I'm 100% certain that all three USB ports this laptop has are USB 3. The devices connected to the USB "2" controller are in this case for me devices connected to the USB C port through a USB C → 7 port USB 3 hub. As such I am completely positive these devices are connected through USB 3 ports.
One hint might be that all the devices connected to the USB "2" controller are in fact USB 2 devices in my case. It might run in some kind of compatibility mode to ensure these devices work. I'm not familiar enough with the USB spec to say that for certain. The internal webcam is also connected to the USB 2 controller, so it might be used internally as well.
In any case, the external USB ports are all capable of USB 3, so I don't think there's anything to worry about.
Fun fact: I actually have no clue what I'm doing
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#4 2021-02-21 19:07:03
- shoelesshunter
- Member
- From: USA
- Registered: 2014-05-18
- Posts: 289
Re: lenovo ideapad L3400 usb issue
What's the output of lsusb ? Many systems often have an internal USB bus that's not exposed to the outside for things like the touchpad and the keyboard which is likely the USB 2 controller you're seeing.
lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 04ca:7070 Lite-On Technology Corp. Integrated Camera
Bus 001 Device 002: ID 25a7:fa23 Areson Technology Corp 2.4G Receiver
Bus 001 Device 004: ID 8087:0aaa Intel Corp. Bluetooth 9460/9560 Jefferson Peak (JfP)
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubThe only external device plugged into the type-A port is my wireless mouse receiver.
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#5 2021-02-21 19:08:50
- shoelesshunter
- Member
- From: USA
- Registered: 2014-05-18
- Posts: 289
Re: lenovo ideapad L3400 usb issue
I also own the Lenovo L340. I specifically own the 81LK L340-15IRH variant.
My kinfocenter shows exactly the same thing. There's two xHCI Host Controllers in the left list, and clicking on them reveals one is USB 2 and one is USB 3.2. I do not know why it is showing this, as I'm 100% certain that all three USB ports this laptop has are USB 3. The devices connected to the USB "2" controller are in this case for me devices connected to the USB C port through a USB C → 7 port USB 3 hub. As such I am completely positive these devices are connected through USB 3 ports.
One hint might be that all the devices connected to the USB "2" controller are in fact USB 2 devices in my case. It might run in some kind of compatibility mode to ensure these devices work. I'm not familiar enough with the USB spec to say that for certain. The internal webcam is also connected to the USB 2 controller, so it might be used internally as well.
In any case, the external USB ports are all capable of USB 3, so I don't think there's anything to worry about.
I have no experience with Type-C 3.1 (and this laptop is supposed to be Gen 2 10Gb/s). I am about to buy a HDD enclosure with a Type-C Gen 2 hookup. Will this work reliably with a multiplier hub?
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#6 2021-03-06 10:08:37
- shoelesshunter
- Member
- From: USA
- Registered: 2014-05-18
- Posts: 289
Re: lenovo ideapad L3400 usb issue
lspck -vk | grep USBshows
00:14.0 USB controller: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller (rev 10) (prog-if 30 [XHCI])I have a USB A to SATA dock connected. In it spins a WD Red Pro.
lsusb -v -d 2537:1066 (the vendor I.D. of the SATA dock)shows
Bus 001 Device 007: ID 2537:1066 Norelsys NS1066
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.10
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x2537 Norelsys
idProduct 0x1066 NS1066
bcdDevice 1.00
iManufacturer 1 Norelsys
iProduct 2 NS1066
iSerial 3 0123456789ABCDE
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0020
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 0x0016
bNumDeviceCaps 2
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000002
HIRD Link Power Management (LPM) Supported
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
wSpeedsSupported 0x000e
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 1
Lowest fully-functional device speed is Full Speed (12Mbps)
bU1DevExitLat 10 micro seconds
bU2DevExitLat 2047 micro seconds
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0001
Self Powered
[jmgant@kyzer ~]$ sudo lsusb -v -d 2537:1066
Bus 001 Device 007: ID 2537:1066 Norelsys NS1066
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.10
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x2537 Norelsys
idProduct 0x1066 NS1066
bcdDevice 1.00
iManufacturer 1 Norelsys
iProduct 2 NS1066
iSerial 3 0123456789ABCDE
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0020
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 0x0016
bNumDeviceCaps 2
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000002
HIRD Link Power Management (LPM) Supported
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
wSpeedsSupported 0x000e
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 1
Lowest fully-functional device speed is Full Speed (12Mbps)
bU1DevExitLat 10 micro seconds
bU2DevExitLat 2047 micro seconds
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0001
Self PoweredAnd interestingly enough, I get USB 1 write speeds to that drive. I am about to purchase some expensive external storage and really want to sort this out. The manual for the laptop does list all ports as USB 3.
This dock is old but is USB 3/eSATA.
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