I have the same problem here. The system is a fresh install of Kubuntu 6.06LTS, patched to the latest available package set. The hardware is a Supermicro P6DBU motherboard with 2xP3/750 and a Sapphire ATI Radeon 7000 video card in the AGP slot. When I use the -386 kernel, everything works fine, but as soon as I switch to -686 and SMP, X always locks up somewhere after KDM coming up.
It cannot be a hardware problem, the machine is rock stable. On another partition I have a Debian Sarge with kernel 2.4.32 (hand-compiled) and it runs well with DRI turned on, in SMP mode. -- system freeze when using ati radeon 7000 with xorg "ati" driver https://launchpad.net/bugs/16873 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
