I was a little confused about exactly which version of the kernel you wanted to test, but it's a moot point because all of the ones I tried had the bug still.
I'm still using Ubuntu 12.04 so sudo apt-get dist-upgrade just keeps me on v3.5.0-40, which definitely has the bug. I also tested v3.11-rc1 (built 7/14) off of the Ubuntu Mainline PPA, v3.11-rc5 (it had the patch by Rafael Wysocki I mentioned previously), and v3.12-rc1 (the latest version). Every single one showed the bug, which I confirmed by checking the dmesg logs after booting up with a stable kernel. Actually, none of those three kernels even made it to the login screen. It's a little unnerving that whatever changes fixed the bug around May this year have been canceled out since then. Seeing the glass half-full though, once I have some free time, I can do a standard bisection to see where the fix was knocked out. That might give us a little more data to work with. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1009312 Title: 10de:0426 GPU loads unreliably, possible kernel timeout To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1009312/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs