You are not logged in.
Hello everyone.
Recently ~one month ago, i've been facing some weird connection issues between my lenovo T480s and the lenovo usb-c dock,
I used to have connected my keyboard, monitor and an external dac and the keyboard and dac got disconnected and the monitor keeps working well.
In my dmesg logs I can see this:
[Mar 4 15:31] usb 1-4: USB disconnect, device number 51
[ +0.000004] usb 1-4.1: USB disconnect, device number 52
[ +0.000002] usb 1-4.1.2: USB disconnect, device number 55
[ +0.000128] xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 1 comp_code 1
[ +0.000004] xhci_hcd 0000:00:14.0: Looking for event-dma 0000000107550180 trb-start 0000000107550190 trb-end 0000000107550190 seg-start 0000000107550000 seg-end 0000000107550ff0
[ +0.026705] usb 1-4.2: uac_clock_source_is_valid(): cannot get clock validity for id 40
[ +0.000005] usb 1-4.2: clock source 40 is not valid, cannot use
[ +0.000003] usb 1-4.2: 2:2: cannot get freq (v2/v3): err -19
[ +0.000002] usb 1-4.2: 2:2: cannot set freq 44100 (v2/v3): err -19For what I understand could be a hardware or driver issue...
So, my question is how can I debug this kind of errors?
I believe that is not the connection from laptop -> doc, since the monitor keeps working all the time,
also, I'm not sure if its from doc -> keyboard and dock -> dac, seems weird that both devices are disconnected at the same time.
I changed the keyboard from one of the usb ports on the hub to another and the issue remains, so I decided to connect my kb directly to my laptop, since takes a little to reconnect...
finally... it seems that this disconnection occurs only when im listening music using the dac. (I test using spotify and youtube while writing this)
nah.. it disconnects even when i'm not using the audio (I notice this on the logs on dmesg repeating)
Thank you all in advice!
Last edited by ptz7 (2024-03-04 21:59:09)
Offline