[Intel-gfx] bug in commit with Intel Core i3 3220T (Ivy Bridge hd graphics 2500)

[zaverel]

Hello,

the commit sna/gen7: Use GT2 values for GT2 variants

  http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=235a3981ea9759317b392302a2b2b8f4fafab410

break sna acceleration.



I use kde and when it start desktop is buggy with black butterfly like this
http://imageshack.us/photo/my-images/132/bugvaapi.png/

I don't have time to do a screenshot so i use an old for illustrate it.

xorg.log
...
[    28.705] (EE) intel(0): Detected a hung GPU, disabling acceleration.
[    28.705] (EE) intel(0): When reporting this, please include 
i915_error_state from debugfs and the full dmesg.
.....

If i revert the commit that work like before





lspci -vxxx -s 0:02.0
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd 
Gen Core processor Graphics Controller (rev 09) (prog-if 00 [VGA 
controller])
         Subsystem: Micro-Star International Co., Ltd. Device 2111
         Flags: bus master, fast devsel, latency 0, IRQ 44
         Memory at f7800000 (64-bit, non-prefetchable) [size=4M]
         Memory at e0000000 (64-bit, prefetchable) [size=256M]
         I/O ports at f000 [size=64]
         Expansion ROM at <unassigned> [disabled]
         Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
         Capabilities: [d0] Power Management version 2
         Capabilities: [a4] PCI Advanced Features
         Kernel driver in use: i915
00: 86 80 52 01 07 04 90 00 09 00 00 03 00 00 00 00
10: 04 00 80 f7 00 00 00 00 0c 00 00 e0 00 00 00 00
20: 01 f0 00 00 00 00 00 00 00 00 00 00 62 14 11 21
30: 00 00 00 00 90 00 00 00 00 00 00 00 0b 01 00 00
40: 09 00 0c 01 92 80 80 e2 d0 00 50 14 00 00 00 00
50: 41 02 00 00 11 00 00 00 00 00 00 00 01 00 a0 cf
60: 00 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 05 d0 01 00 0c f0 e0 fe e1 41 00 00 00 00 00 00
a0: 00 00 00 00 13 00 06 03 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 01 a4 22 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 80 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 09 00 18 60 43 cd



See you