Public bug reported: I have machines running both recent Ubuntu releases (7.10 and 8.04), and when I ssh -X to the machines with Hardy Heron (8.04 AKA HH) GUI programs are not as responsive as they are with Gutsy Gibbon (7.10 AKA GG). Below is a summary of the behavior:
Slow: ssh -X from GG to HH ssh -X from HH to HH ssh -X from HH to itself Fast: ssh -X from GG to another GG ssh -X from GG to itself ssh -X from HH to GG The behavior is that scrolling, typing, and mouse clicks are not very responsive. Running the applications tested by sitting at the machines (not through ssh) results in normal operation. The applications tested have been Matlab, gvim, and gedit, and I don't believe the problem is specific to any of those programs. All of these ssh combinations should be quite fast, but any that does a ssh to one of 3 machines running HH has a slow GUI experience. The same behavior exists when connecting using telnet (temporarily installed for testing). Also, internet speed tests show that both the GG and HH machines have very similar upload and download speeds, and all the machines are on a fast local network. And no significant background processes are running. The problem is severe enough for me to revert back to GG (7.10) on my group's server so that it is possible to edit and execute MATLAB code efficiently through a ssh connection. The connection is now as fast as expected. I have searched through Google, the Ubuntu forums, and Launchpad for duplicate bugs but have not found anything like this yet. Also, this is not the same issue where users were experiencing a slow request for a password. (I did post this issue in the forum with username cbrinegar.) The closest reports I have found are listed below: https://bugs.launchpad.net/ubuntu/+source/tracker/+bug/229563 ** Affects: ubuntu Importance: Undecided Status: New -- X Forwarding Much Slower on Hardy than Gutsy (ssh and telnet) https://bugs.launchpad.net/bugs/241063 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
