Discussion:
Long-lived connections over WiFi get stuck
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Yuri
2018-11-08 19:14:48 UTC
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I have the problem that vnc-over-ssh connection from the laptop on WiFi
gets stuck regularly, while the local browser on the laptop still works
fine.

Eventually vnc-over-ssh either disconnects, or can be revived by pulling
the WiFi card out and putting it back in.

The only difference between the browser and vnc-over-ssh is that browser
connections are supposedly shorter, and can supposedly get reset by the
browser when they aren't responsive, while ssh connections are
long-lived and probably intense because vnc regularly needs to transfer
large screen portions, and ssh doesn't reconnect when stuck.


What could be a problem with long connections getting stuck? How can
this be troubleshooted?


Thanks,

Yuri
Bjoern A. Zeeb
2018-11-08 22:10:34 UTC
Permalink
Post by Yuri
I have the problem that vnc-over-ssh connection from the laptop on
WiFi gets stuck regularly, while the local browser on the laptop still
works fine.
Eventually vnc-over-ssh either disconnects, or can be revived by
pulling the WiFi card out and putting it back in.
The only difference between the browser and vnc-over-ssh is that
browser connections are supposedly shorter, and can supposedly get
reset by the browser when they aren't responsive, while ssh
connections are long-lived and probably intense because vnc regularly
needs to transfer large screen portions, and ssh doesn't reconnect
when stuck.
What could be a problem with long connections getting stuck? How can
this be troubleshooted?
My initial thought was MTU issues.


You might want to run tcpdump/wireshark and see what’s going on.
Wireshark might help you with the analysis.

/bz

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