I get pretty much the same errors in the dmesg log, but the X server starts up and runs mostly alright, but after it's been running a while, starts getting wonky, like it won't respond for a long time, then suddenly comes back to life, but hangs intermittently from then on. A reboot is necessary to make it usable again.
I suspect this is nVidia's bug, though I do see a few mentions via Google searches of patches made in the past to the Linux kernel surrounding the ioremap and nVidia's proprietary drivers. I've tried their newer driver, 304.60, and it's the same. NVRM version: NVIDIA UNIX x86_64 Kernel Module 304.51 Tue Sep 18 17:16:56 PDT 2012 GCC version: gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-2ubuntu1) Model: GeForce 7600 GT IRQ: 24 GPU UUID: N/A Video BIOS: 05.73.22.18.00 Bus Type: PCI-E DMA Size: 39 bits DMA Mask: 0x7fffffffff Bus Location: 0000:01.00.0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1039148 Title: When logging in to Unity, the Desktop session crashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/1039148/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs