Hello fellow developers,
On April 15, a major memory leak was introduced into the X.org server which causes the computer to get slower and slower over some hours, and finally becoming totally sluggish. This is tracked in https://launchpad.net/bugs/565981
Thanks to the tireless investigations of Robert Hooker and Tormod Volden, this was tracked down to a recently added patch which fixed some crashes intoduced by the GLX 1.4 enablement patches. A first attempt to fixing the memory problem wasn't successful unfortunately, and isn't easy.
The safest solution right now is to roll back all three patches. This will fix both the memory leak and thus the performance problem, as well as avoid the X crashes which were introduced by the GLX 1.4 enabling. While we had this combination before, we haven't tested it with the current lucid userspace, and thus we need some extensive tests on various hardware to get more data about it.
I set up a wiki page to explain how to install the proposed packages and for adding feedback:
On Friday we will check how much and which kind of feedback we got, and depending on that will decide about the risk of putting it into Lucid final, or doing an early SRU. (We need testing feedback in either case, of course).
Thank you in advance for helping with testing!