You need to give the full path to insmod: sudo insmod /lib/modules/2.6.38-8-generic/kernel/drivers/gpu/drm/radeon/radeon.ko
About upgrading to 11.04 final: I think the kernel is the same, 2.6.38-8.42. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/763909 Title: 11.04 Wont Boot With Mobility Radeon HD 3400 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs