On 12/16/2010 11:56 PM, akpm@linux-foundation.org wrote:

The mm-of-the-moment snapshot 2010-12-16-14-56 has been uploaded to

Hi, there is a regression against 2010-12-02-16-34 in i915. When modeset is used, my G33 produces no signal to the monitor (black screen, power led blinks).

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: 86 80 c0 29 06 00 90 20 02 00 00 06 00 00 00 00 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20: 00 00 00 00 00 00 00 00 00 00 00 00 86 80 c0 29 30: 00 00 00 00 e0 00 00 00 00 00 00 00 00 00 00 00 40: 01 90 d1 fe 01 00 00 00 01 40 d1 fe 00 00 00 00 50: 00 00 30 02 c9 03 00 00 00 00 00 00 00 00 00 00 60: 01 00 00 e0 00 00 00 00 01 80 d1 fe 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: 10 11 11 00 00 33 33 00 5f 00 72 00 00 0a 38 00 a0: 60 00 c0 1c 00 00 80 af 00 00 60 af 00 00 60 af b0: 00 b0 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: 00 00 00 00 00 00 00 00 49 00 00 00 00 00 00 5b e0: 09 00 0b 01 00 00 00 00 01 00 00 00 00 00 00 00 f0: 00 00 00 00 00 00 00 00 90 0f 03 00 00 00 00 00

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 42 Region 0: Memory at feb80000 (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 fea00000 (32-bit, non-prefetchable) [size=1M] Expansion ROM at <unassigned> [disabled] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Address: fee0300c Data: 4161 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 00: 86 80 c2 29 07 04 90 00 02 00 00 03 00 00 00 00 10: 00 00 b8 fe 01 ec 00 00 08 00 00 d0 00 00 a0 fe 20: 00 00 00 00 00 00 00 00 00 00 00 00 86 80 c2 29 30: 00 00 00 00 90 00 00 00 00 00 00 00 05 01 00 00 40: 09 00 0b 01 00 00 00 00 01 00 00 00 00 00 00 00 50: 00 00 30 02 c9 03 00 00 00 00 00 00 00 00 80 af 60: 00 00 02 02 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 30 e0 fe 61 41 00 00 00 00 00 00 a0: 11 11 00 00 00 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 00 22 00 00 00 00 00 00 00 00 00 00 01 02 00 e0: 00 00 00 00 00 00 00 00 00 80 00 00 00 00 00 00 f0: 12 00 03 00 00 00 00 00 90 0f 03 00 e4 e0 5b af

any ideas?

thanks,