I just upgraded my system to a Xeon E3-1235.
Ubuntu boots as nice as ever, but I don't get 3D acceleration (and thus no gnome3).
System is uptodate and rebooted to current kernel:
Packages libdrm-intel1 and xserver-org-video-intel are installed and there is no xorg.confarchi@thor:~$ uname -a
Linux thor 3.0.0-15-generic #25-Ubuntu SMP Mon Jan 2 17:44:42 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
name of display: :0.0
X Error of failed request: BadRequest (invalid request code or no such operation)
Major opcode of failed request: 136 (GLX)
Minor opcode of failed request: 19 (X_GLXQueryServerString)
Serial number of failed request: 12
Current serial number in output stream: 12
Complete Xorg.0.log is at http://pastebin.com/T5x1nGwU
It throws one error:
I still have fglrx drivers installed, but the ATI card (HD3870X2) is not plugged in all the time, as I don't want to waste power.[ 38.529] (EE) GLX error: Can not get required symbols.
I also updated to xorg-edgers. I still have X (*phew*), but still the same symptoms like before
//edit: Maybe updating to kernel 3.x with better support for sandy bridge would help?