[Intel-gfx] i915: GPU hung

[Daniel Vetter]

Hi Knut,

Yet again, relaxed fencing has won the race :( In other words, that
probably takes longer to track down. Can you please create an fd.org bug
and upload everything you've already posted?

Also please check whether the following xorg.conf snippet works around the
problem (it should):

Section "Device"
	Identifier "onboard" 
	Driver "intel" 
	Option "Tiling" "false" 
EndSection 

Yours, Daniel

On Mon, Apr 11, 2011 at 07:35:39PM +0200, Knut Petersen wrote:
> Am 08.04.2011 12:00, schrieb Daniel Vetter:
> > Hi Knut,
> >
> > I've taken a look and nothing stood especially out. Can you open a bug
> > report at bugs.freedesktop.org and in addition to all the things
> > already posted at the versions of the latest working and the first
> > non-working revision of: xf86-video-intel, libdrm, kernel, mesa. Also
> > please put me on the cc of that bug report.
> >
> > Thanks, Daniel
> >
> 
> Well, I found the solution. The offending commit is
> 
>             commit cc930a37612341a1f2457adb339523c215879d82
>             "uxa: Relax fencing some more for gen3"
> 
> It breaks Xorg on my AOpen i015GMm-hfs machines.
> I tested 2.14.903 both with and without the commit reverted.
> cc93.... is definitely the cause of my troubles.
> 
> lspci:
> 
> 00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller (rev 04)
>         Subsystem: AOPEN Inc. Device 2580                                                                     
>         Flags: bus master, fast devsel, latency 0                                                             
>         Capabilities: [e0] Vendor Specific Information: Len=09 <?>                                            
>         Kernel driver in use: agpgart-intel                                                                   
> 
> 00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 04) (prog-if 00 [VGA controller])
>         Subsystem: AOPEN Inc. Device 0554                                                                                                     
>         Flags: bus master, fast devsel, latency 0, IRQ 16                                                                                     
>         Memory at d0380000 (32-bit, non-prefetchable) [size=512K]                                                                             
>         I/O ports at e000 [size=8]                                                                                                            
>         Memory at c0000000 (32-bit, prefetchable) [size=256M]                                                                                 
>         Memory at d0400000 (32-bit, non-prefetchable) [size=256K]                                                                             
>         Expansion ROM at <unassigned> [disabled]                                                                                              
>         Capabilities: [d0] Power Management version 2                                                                                         
>         Kernel driver in use: i915                                                                                                            
> 
> 00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 04)
>         Subsystem: AOPEN Inc. Device 0554                                                                
>         Flags: bus master, fast devsel, latency 0                                                        
>         Memory at d0300000 (32-bit, non-prefetchable) [size=512K]                                        
>         Capabilities: [d0] Power Management version 2                                                    
> 
> cu,
>  Knut
> 
> 

-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48