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Hi All,
after purchasing a new CFexpress card reader, which is the first device that I own which supports 10 Gbit/s over USB, I found that with my mainboard (Asus TUF Gaming B550 Plus) it only operates at 5 Gbit/s rather than at 10 Gbit/s that should be achievable. Here's some initial config information:
[user@host ~]$ lsusb -tv
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
ID 1d6b:0003 Linux Foundation 3.0 root hub
|__ Port 3: Dev 2, If 0, Class=Mass Storage, Driver=uas, 5000M
ID 174c:2362 ASMedia Technology Inc.
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
ID 1d6b:0002 Linux Foundation 2.0 root hub
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
ID 1d6b:0003 Linux Foundation 3.0 root hub
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 480M
ID 1d6b:0002 Linux Foundation 2.0 root hub
|__ Port 6: Dev 2, If 2, Class=Human Interface Device, Driver=usbhid, 12M
ID 0b05:1939 ASUSTek Computer, Inc.
|__ Port 6: Dev 2, If 0, Class=Vendor Specific Class, Driver=, 12M
ID 0b05:1939 ASUSTek Computer, Inc.
|__ Port 7: Dev 3, If 0, Class=Hub, Driver=hub/4p, 480M
ID 05e3:0610 Genesys Logic, Inc. Hub
|__ Port 9: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
ID 0bda:8771 Realtek Semiconductor Corp.
|__ Port 9: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
ID 0bda:8771 Realtek Semiconductor Corp.
|__ Port 10: Dev 5, If 0, Class=Human Interface Device, Driver=usbhid, 12M
ID 046a:00b0 Cherry GmbH
|__ Port 10: Dev 5, If 1, Class=Human Interface Device, Driver=usbhid, 12M
ID 046a:00b0 Cherry GmbH
(I'm talking about Bus 04 Port 3.) As you can see, Bus 02 would actually support 10 Gbit/s, but somehow this device is not recognized as being capable of that speed. There is no difference whether I connect it to the USB-A or USB-C port at the back of the mainboard. Also, when hooking it up to my MBP using the same cable, it is recognized properly as supporting 10 Gbit/s (which it really does).
I already searched the web for any potential config options to somehow "unlock" those 10 Gbit/s, but it seems that there not really any switches/options for that. It should theoretically work out of the box with a recent kernel.
Any ideas what might be wrong here? I remember that a while back I had some instabilities when connecting my USB 3 (5 Gbit/s) card reader, and it would only be recognized at USB 2 speed (480 Mbit/s), but that was just an intermittent issue. This one here seems to be fixed at 5 Gbit/s, no matter how often I unplug/replug it or restart the machine. FWIW, I'm running the most recent official kernel (5.14.7-arch1-1). TIA!
Last edited by Smoerrebroed (2021-09-27 04:14:28)
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Latest firmware version[1] is 2423 from 26 aug 2021, are you running that ?
Brand and model of the CFreader ?
[1] https://www.asus.com/Motherboards-Compo … Desk_BIOS/
Last edited by Lone_Wolf (2021-09-27 10:55:45)
Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.
(A works at time B) && (time C > time B ) ≠ (A works at time C)
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Latest firmware version[1] is 2423 from 26 aug 2021, are you running that ?
Yes. I had the previous version on there before, but there is no difference.
Brand and model of the CFreader ?
It's one of those all aluminum readers that can be had for about 40 EUR/USD on Amazon: https://www.amazon.com/dp/B08FD7B2LF/ They are based on an ASMedia 236x chip, but I don't see any hints about firmware version. The thing is that the same reader is correctly recognized with 10 Gbit/s capability on my MBP, so something looks to be missing on Arch.
Not sure how this works, but look here:
[user@host ~]$ sudo lsusb -vvd 174c:2362
Bus 004 Device 002: ID 174c:2362 ASMedia Technology Inc. ASM236X series
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.20
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 9
idVendor 0x174c ASMedia Technology Inc.
idProduct 0x2362
bcdDevice 1.00
iManufacturer 2 Asmedia
iProduct 3 ASM236X series
iSerial 1 00000000009C
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0079
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
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 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 1
bNumEndpoints 4
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 98
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 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
MaxStreams 32
Data-in pipe (0x03)
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
MaxStreams 32
Data-out pipe (0x04)
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
MaxStreams 32
Status pipe (0x02)
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 0
Command pipe (0x01)
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 0x002a
bNumDeviceCaps 3
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x0000f41e
BESL Link Power Management (LPM) Supported
BESL value 1024 us
Deep BESL value 61440 us
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
SuperSpeedPlus USB Device Capability:
bLength 20
bDescriptorType 16
bDevCapabilityType 10
bmAttributes 0x00000001
Sublink Speed Attribute count 1
Sublink Speed ID count 0
wFunctionalitySupport 0x1100
bmSublinkSpeedAttr[0] 0x000a4030
Speed Attribute ID: 0 10Gb/s Symmetric RX SuperSpeedPlus
bmSublinkSpeedAttr[1] 0x000a40b0
Speed Attribute ID: 0 10Gb/s Symmetric TX SuperSpeedPlus
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0001
Self Powered
wSpeedsSupported is missing an entry for 10 Gbit/s, but it shows under bmSublinkSpeedAttr[0] and bmSublinkSpeedAttr[1]. Not sure if this is supposed to be like that.
Last edited by Smoerrebroed (2021-09-27 12:31:00)
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(I'm talking about Bus 04 Port 3.) As you can see, Bus 02 would actually support 10 Gbit/s, but somehow this device is not recognized as being capable of that speed.
[user@host ~]$ sudo lsusb -vvd 174c:2362 Bus 004 Device 002: ID 174c:2362 ASMedia Technology Inc. ASM236X series
Bus 004 only supports 5gbps. What does lsusb look like when you plug it into the port(s) on Bus 002 (10gbps)?
--
saint_abroad
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I am not exactly sure how it works, but the card reader is actually plugged into one of the ports that is marked as being 10 Gbit/s. No idea why it shows under another (logical?) bus.
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So ... no further ideas? How could I troubleshoot this phenomenon more in-depth to find out the root cause?
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https://bugzilla.kernel.org/show_bug.cgi?id=204869 (different asmedia chip, though)
dmesg when attaching the reader?
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