i915 causes bootup freeze (mmotm 2010-06-03-16-36)

i915 causes bootup freeze (mmotm 2010-06-03-16-36)

[Jiri Slaby]

Hi,

with mmotm 2010-06-03-16-36, I get an ioremap warning caused by i915 and
the bootup freezes. Both w/ and w/o KMS. (W/ KMS I see only black screen.)

The warning with trace:
http://www.fi.muni.cz/~xslaby/sklad/panics/i915_crash.png

I tried this patch just in case, but it doesn't help:
http://lkml.org/lkml/2010/6/6/30


lspci's of bridge and graphics card:

00:00.0 Host bridge [0600]: Intel Corporation 82G33/G31/P35/P31 Express
DRAM Controller [8086:29c0] (rev 02)
        Subsystem: Intel Corporation 82G33/G31/P35/P31 Express DRAM
Controller [8086:29c0]
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort+ >SERR- <PERR- INTx-
        Latency: 0
        Capabilities: [e0] Vendor Specific Information: Len=0b <?>
        Kernel driver in use: agpgart-intel

00:02.0 VGA compatible controller [0300]: Intel Corporation 82G33/G31
Express Integrated Graphics Controller [8086:29c2] (rev 02) (prog-if 00
[VGA controller])
        Subsystem: Intel Corporation 82G33/G31 Express Integrated
Graphics Controller [8086:29c2]
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 26
        Region 0: Memory at ffa80000 (32-bit, non-prefetchable) [size=512K]
        Region 1: I/O ports at ec00 [size=8]
        Region 2: Memory at d0000000 (32-bit, prefetchable) [size=256M]
        Region 3: Memory at ff900000 (32-bit, non-prefetchable) [size=1M]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
                Address: fee0300c  Data: 4169
        Capabilities: [d0] Power Management version 2
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Kernel driver in use: i915

thanks,
-- 
js