Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #176135

Re: Stretch and WiFi ALMOST working

Show all headers | View raw

On Thu, Dec 29, 2016 at 04:46:22PM +0000, Brian wrote:
> On Wed 28 Dec 2016 at 19:54:34 +0900, Mark Fletcher wrote:
> 
> > However, I now discover that Avahi is not doing its thing properly any 
> > more, and other machines on my network cannot see this machine by name. 
> > Its IP address right now is 192.168.11.13 and its name is affinity. I 
> > have another machine on my network, a jessie box, which is called kazuki 
> > and happens to be at IP 192.168.11.4 right now. From kazuki I can ping 
> > affinity by IP address, and likewise from affinity I can ping kazuki by 
> > IP address, but ping kazuki.local from affinity and ping affinity.local 
> > from kazuki both fail with "ping: unknown host X" where X is the machine 
> > I am trying to ping, after a pause that suggests some sort of attempt to 
> > find the other machine is being made.
> 
> You do have libnss-mdns installed and the line
> 
>   hosts:	files mdns4_minimal [NOTFOUND=return] dns
> 
> in /etc/nsswitch?
> 

Thanks Brian. I have got to think the answer is YES since it *was* 
previously working, and even now works (I discovered after my original 
post) immediately after booting or after restarting NetworkManager, but 
then stops working after that.

I will check facts later when the machine is up and verify. 

Some developments on this. I am noticing that, even when using the WiFi 
extension, the WiFi interface on this box seems to "go to sleep" if left 
idle for a few minutes. So when the machine first comes up, all is 
working as it should, but if left idle for a while, suddenly I can't 
ping the machine any more. If I ping it from another machine on my 
network and leave ping running, after about 30 seconds or so the pings 
start being answered. But from that time I can no longer find the 
machine by name (ping affinity.local will fail to resolve 
affinity.local, ping <ip address> will work).

So Avahi not working could be a symptom rather than a cause, if you see 
what I mean. Or rather, be a secondary issue caused by the real issue, 
which is what I should be solving.

The WiFi interface is a Realtek RTL8723BE device, and the firmware is 
being successfully found and loaded on boot (Checked in journalctl -b). 
Googling around I have found some modprobe options that are suggested 
for this card, so I am going to try those and see if that makes any 
difference. But I'm startuing to think it is a 
stability-of-the-network-interface issue rather than an Avahi or an 
out-on-the-edge-of-WiFi-range issue as I thought it was originally.

Mark

Back to linux.debian.user | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Stretch and WiFi ALMOST working Mark Fletcher <mark27q1@gmail.com> - 2016-12-28 12:00 +0100
  Re: Stretch and WiFi ALMOST working Brian <ad44@cityscape.co.uk> - 2016-12-29 17:50 +0100
    Re: Stretch and WiFi ALMOST working Mark Fletcher <mark27q1@gmail.com> - 2016-12-31 04:10 +0100

csiph-web