Any tips troubleshooting wifi issues with Realtek and latest fedora25 kernels?

edit

After the last couple of kernel updates obtained through Software Install, wifi on my laptop has stopped working. I didn't notice immediately because I've had the laptop at my desk connected to an ethernet cable. But yesterday I tried working elsewhere and noticed I couldn't connect using wifi.

The symptoms are:

Wifi sometimes appears to be connected after boot up (little wifi signal icon in the top right hand corner of the Gnome GUI looks normal). But I cannot ping anything on my local network, and nslookup fails.

Sometimes, after a restart, the Wifi icon is replaced by a question mark.

It doesn't work with my guest network either.

Rebooted into an older kernel, and wifi worked fine.

Modules probably related to wifi:

rtl8192ce, rtl8192c_common, rtlwifi

(i.e. Realtek) Bad kernel(s) obtained through Software Install updates: 4.9.5-200.fc25.x8664 and 4.9.4--201.fc25.x8664 Last good kernel on my system: 4.8.15-300.fc25.x86_64

I'm not sure if it's the kernel or if it's the modules. I'm just saying "bad kernel" or "good kernel" because those are the kernel versions in grub that I boot into.

Not sure if this is relevant, but here is the output of route -n:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1     0.0.0.0         UG    600    0        0 wlp3s0
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
192.168.1.0     0.0.0.0         255.255.255.0   U     600    0        0 wlp3s0
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 virbr0

I noticed someone else posted a problem with their Realtek wifi a few days ago, too. Is there anything else I can try to get to the bottom of this? It's been awhile since I've recompiled a kernel, but I'm not adverse to trying it out if there is some indication this is a known issue that may have been fixed.

Thanks in advance!

Update

Thanks for the suggestions. Power down doesn't work any better, unfortunately. Tried it a few times. Once, I got a console open and was able to ping my router, but ping stopped working after a few seconds. Other times, power down just doesn't help at all.

As an aside, power down takes over 5 minutes when the network is not working. It's like fedora is trying to "phone home" one last time. Of course wifi is not working properly, so it times out eventually.