This is important: GPU hangs always have basically the same symptoms so are very hard to tell apart. It is _quite likely_ many people subbed to this bug are having unrelated actual bugs. That is going to make verification of any fix really hard.
I would strongly recommend anyone that believes they have this bug to collect the following file while their system is hung, and post it here: /debug/dri/0/i915_error_state This must be collected while the system is hung (e.g. by ssh'ing into it). The registers get zero'd out once the machine reboots so don't bother collecting it when your system *isn't* frozen. Two compare two people's hangs, compare the top twenty lines or so. Especially look at values of PGTBL_ER, EIR, IPEHR. The actual codes may vary from person to person, but look for the 0x00000000's vs. non- 0x00000000's. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1140716 Title: [regression] 3.5.0-26-generic and 3.2.0-39-generic GPU hangs on Sandybridge To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1140716/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
