My Aeon Labs ZWave USB stick doesn't work anymore since 5.11.12-arch1-1:
[ 193.677337] usb 2-2: new full-speed USB device number 5 using xhci_hcd
[ 193.818112] usb 2-2: New USB device found, idVendor=0658,
idProduct=0200, bcdDevice= 0.00
[ 193.818117] usb 2-2: New USB device strings: Mfr=0, Product=0,
SerialNumber=0
[ 194.372999] cdc_acm 2-2:1.0: ttyACM0: USB ACM device
[ 194.373197] usbcore: registered new interface driver cdc_acm
[ 194.373199] cdc_acm: USB Abstract Control Model driver for USB modems
and ISDN adapters
[ 200.173616] cdc_acm 2-2:1.0: acm_port_activate - usb_submit_urb(ctrl
irq) failed
It works fine on 5.11.11-arch1-1 and on a Fedora 34 Live USB with kernel
5.11.16.
Arch's 5.11.16 doesn't work and latest Arch's linux-lts doesn't work
either.
This led me to believe that this could be due to an Arch configuration
change happened between 5.11.11 and 5.11.12 (AFAIK they don't carry any
additional patch).
This is the only one I've found:
https://github.com/archlinux/svntogit-packages/commit/0b94106e755810659ccd9accfa4821bc3b429d34#diff-3e341d2d9c67be01819b25b25d5e53ea3cdf3a38d28846cda85a195eb9b7203a
Basically they added CONFIG_IDLE_PAGE_TRACKING=y. They backported the
same configuration change to linux-lts. I don't know if this makes any
sense, I'm running out of ideas.
Niccolo' Belli
