The sluggishness indeed seems to be caused by xcb in some way, as libx11 1.0.3 doesn't use xcb. I tried building the newest libx11-6/libx11-data from Ubuntu's source debs without xcb support, but I had some trouble rebuilding the debs due to scripting errors, as they expect the xcb files to be built.
I'll see if I can install the packages you linked to and get back to you with the result soon.
Michel,
Thanks for the follow-up. I was able to eliminate the performance regression by downgrading libx11-6 and libx11-data to Ubuntu's version 1.0.3-4ubuntu1. The issue is being followed at my bug here: https:/ /bugs.launchpad .net/ubuntu/ +source/ xorg-server/ +bug/88815 and comment 39 contains the links to the older packages: https:/ /bugs.launchpad .net/ubuntu/ +source/ xorg-server/ +bug/88815/ comments/ 39
The sluggishness indeed seems to be caused by xcb in some way, as libx11 1.0.3 doesn't use xcb. I tried building the newest libx11- 6/libx11- data from Ubuntu's source debs without xcb support, but I had some trouble rebuilding the debs due to scripting errors, as they expect the xcb files to be built.
I'll see if I can install the packages you linked to and get back to you with the result soon.
Thanks,
Conn