Bug 2536

Summary:	X11 forwarding slows down client
Product:	Portable OpenSSH	Reporter:	krichter
Component:	ssh	Assignee:	Assigned to nobody <unassigned-bugs>
Status:	CLOSED MOVED
Severity:	enhancement	CC:	dtucker
Priority:	P5
Version:	7.1p1
Hardware:	Other
OS:	Linux

Description krichter 2016-02-02 21:38:46 AEDT

X11 forwarding slows down Ubuntu 15.10 with Unity desktop whose whole graphic interface repeatedly becomes unresponsive for seconds if `ssh -X` or `ssh -X -C` is used. This wasn't the case in previous unknown versions.

experienced with V_7_1_P1-171-g4c6cb83

Comment 1 Darren Tucker 2016-02-03 07:55:51 AEDT

(In reply to krichter from comment #0)
[...]
> experienced with V_7_1_P1-171-g4c6cb83

that is a version of OpenSSH modified by a third party.  Can you reproduce the problem with a binary compiled from stock sources from openssh.com?

Comment 2 krichter 2016-03-19 02:43:32 AEDT

>> experienced with V_7_1_P1-171-g4c6cb83
>that is a version of OpenSSH modified by a third party.  Can you >reproduce the problem with a binary compiled from stock sources from >openssh.com?
Following http://www.openssh.com/portable.html I cloned git://anongit.mindrot.org/openssh.git and I run `git fetch --all && git checkout V_7_1_P1-171-g4c6cb83 and git describe` I get this version identifier.

I now have _also_ have this issue with (the possibly third party modified) version 1:7.2p2-1 on Ubuntu 16.04.

Comment 3 krichter 2016-04-21 20:33:05 AEST

Assuming that portable versions ought to be reported outside this tracker (instructions at http://www.openssh.com/portable.html and feedback from @DarrenTucker might or might not mean that) I reported this at https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1572939 as well (launchpad.net claims to be the official bug tracker for OpenSSH on Ubuntu).

Comment 4 Damien Miller 2016-08-02 10:41:05 AEST

Close all resolved bugs after 7.3p1 release