el 2020-01-19 a las 16:49 Mick escribió:
> You could compare the dmesg output of working and non-working kernels > and see what differences are present, then google for bugs/solutions on > that basis. [...] > You could also diff the two different kernel tree versions and see what > drivers have changed. Hello, thanks for your suggestions. I'm not a programmer and I know nothing about C or kernel development, but I found that, beginning with 5.4.11, several changes were introduced in drivers/usb/core/config.c, that seem to be consistent with the message that appears now when I connect my card: [ 129.153850] usb 3-10.3: config 1 interface 2 altsetting 1 has a duplicate endpoint with address 0x85, skipping [ 129.153854] usb 3-10.3: config 1 interface 2 altsetting 2 has a duplicate endpoint with address 0x85, skipping Where can I post this problem? I've been using Linux for 20 years, but this is my first problem with the kernel. I found these forums: https://forum.linuxfoundation.org/categories/drivers https://www.linuxquestions.org/questions/linux-kernel-70/ And of course the kernel mailing list, but seems to be for developers. -