Hi misc@ I'm seeing inconsistent USB behaviour between USB2 and USB3 on different Thinkpads running -current with Cambridge Audio DACMagic XS USB audio card (class 2 audio device). This card otherwise works perfectly fine over USB3 on a Mac laptop.
- When plugged into a USB2 port on Thinkpad X220 the card is recognised properly: uaudio0 at uhub4 port 2 configuration 1 interface 0 "CA CA DacMagicXS 1.0" rev 1.00/6.04 addr 3 uaudio: audio rev 1.00 1 mixer controls audio1 at uaudio0 - But when plugged into a USB3 port on X220 (via a usb3 express-card): uhub1: device problem, disabling port 4 - Same error as above on any of the USB3 port on Thinkpad X1 Carbon. There are no other errors that I can see. Any idea where to start debugging this? I'd really like to be able to use this on my X1 Carbon (assumming this is supported?) For reference, dmesg for both laptops: - USB on Thinkpad x220 (builtin usb2, expresscard usb3): ehci0 at pci0 dev 26 function 0 "Intel 6 Series USB" rev 0x04: apic 2 int 16 usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 ... [snip] ... xhci0 at pci3 dev 0 function 0 "ASMedia ASM1042 xHCI" rev 0.00: msi usb1 at xhci0: USB revision 3.0 uhub1 at usb1 "ASMedia xHCI root hub" rev 3.00/1.00 addr 1 - USB on Thinkpad X1 Carbon (Haswell): xhci0 at pci0 dev 20 function 0 "Intel 8 Series xHCI" rev 0x04: msi usb0 at xhci0: USB revision 3.0 uhub0 at usb0 "Intel xHCI root hub" rev 3.00/1.00 addr 1 Thanks Bojan
