All the issues described in my previous post about Ubuntu Jaunty (64 bit) upgrade have been solved! Yeppa!

1. ATI Video Card – WORKS. The ATI Catalyst driver 9.6 and 9.5 work fine. You can read more about it here. Download the source of the driver from the ATI site  and follow the instructions for building the Debian packages. With the 9.5 driver it was mandatory to use “aticonfig –acpi-services=off” (read about it here). While waiting the release of the new ATI driver I’ve successfully configured the radeonhd driver 1.2.5 from this PPA and following the instructions from x.org here. You will have to rebuild the drm module for the current kernel (beware of kernel updates). Unfortunately the OpenSource driver does not support 3D acceleration yet.
2. Garbaged Printing with some black squares. It seems an issue of foomatic-db-engine. I think that there isn’t an official fix for this, currenty there is only a workaround here (see comment #84 from Till Kamppeter). Download the pdftops filter and replace your current /usr/lib/cups/filter/pdftops from the cups packaage.
3. Battery duration. Now the uptime on battery is back to more than 3 hours like on 8.10. The problem is that the radeonhd driver is not able to optimize the ATI card for battery duration like the fglrx does. With the radeonhd driver there the Thermal Zone 2 always between 55 and 62 degrees (look at it with “acpi -t”), while with the fglrx driver it stays at 44-45. The strange thing is that even without X running the video card is heating, I suppose a BIOS issue.

So now I can enjoy all the Jaunty wonders! New notifications, faster boot and shutdown, a reliable suspend/resume.

((enjoy))