Wifi not working with fedora 28 on surface pro 2

edit

When I first install fedora 28 (kernel 4.16.3-301) on my surface pro 2, wifi worked fine. After the first kernel update (4.17.12-200) wifi stopped working. A subsequent kernel update (4.17.14-202) did not solve the problem. If I boot into the originally installed kernel (4.16.3-301) from the grub menu, wifi works fine. All other updates are applied, which suggests it is the kernel that is the problem. But that is the only way I can get wifi to work. I have tried other adapters, no luck.

Any suggestions?

Edit: I can confirm that the driver is loaded, and also that networks are found. I just can't connect to any.

[cbrown@surfacepro2 ~]$ lsusb -t
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/9p, 480M
    |__ Port 1: Dev 2, If 2, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 1: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 2: Dev 8, If 2, Class=Vendor Specific Class, Driver=mwifiex_usb, 480M
    |__ Port 2: Dev 8, If 0, Class=Wireless, Driver=btusb, 480M
    |__ Port 2: Dev 8, If 1, Class=Wireless, Driver=btusb, 480M
    |__ Port 3: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 3: Dev 4, If 1, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 3: Dev 4, If 2, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 4: Dev 5, If 0, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 4: Dev 5, If 1, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 5: Dev 6, If 0, Class=Video, Driver=uvcvideo, 480M
    |__ Port 5: Dev 6, If 1, Class=Video, Driver=uvcvideo, 480M
    |__ Port 6: Dev 7, If 0, Class=Video, Driver=uvcvideo, 480M
    |__ Port 6: Dev 7, If 1, Class=Video, Driver=uvcvideo, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
[cbrown@surfacepro2 ~]$ lsmod | grep mwifi
mwifiex_usb            28672  0
mwifiex               331776  1 mwifiex_usb
cfg80211              770048  1 mwifiex
[cbrown@surfacepro2 ~]$