I would like to second Colin's message. I installed 12.04 a few minutes ago and while I have encountered lockups with the GPU previously (under Ubuntu 10.04) I have not in the short time time that I have been using Ubuntu 12.04 and getting these messages.
The behavior appears to be similar to what he is reporting, I see it when I connect to a wireless access point while having no other network connections active. It is apparently 100% reproducible with the following steps: 1. Idle desktop, connected to wifi access point 2. Open terminal, issue "sudo dmesg -c" to clear the dmesg 3. Disconnect from Wifi 4. Connect to wifi, system crash notice appears indicating Intel GPU driver 5. issue "dmesg" in terminal, only additional messages are from wifi as a result of connection I am using a Late 2006 Macbook (Core 2 Duo) with Ubuntu 12.04 x86_64 (though I am forced to change this shortly back to x86,) with 1.5GB of RAM and a 160GB hard drive. $ sudo dmidecode -s system-product-name MacBook2,1 ** Attachment added: "dmesg output that triggers crash notice" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/982863/+attachment/3129287/+files/dmesg_trigger -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/982863 Title: [i945gm] False GPU lockup EIR: 0x00000010 PGTBL_ER: 0x00000013 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/982863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
