Hi, when switching from psb_gfx (3.2) to 3.6.2 (or 3.7 as of 2474542f64432398f503373f53bdf620491bcfa8) I'm getting a black screen on a Axiomtek SBC84826 board with a HP 2310ti attached via VGA.
When using CONFIG_STUB_POULSBO=y I do get a console but when I unbind the driver and attach gma500_gfx like echo 0000\:02\:00.0 > /sys/bus/pci/devices/0000\:02\:00.0/driver/unbind echo 0000\:02\:00.0 > /sys/bus/pci/drivers/gma500/bind the display stays black. dmesg has: [ 688.779860] gma500 0000:00:02.0: setting latency timer to 64 [ 688.805968] acpi device:04: registered as cooling_device0 [ 688.806976] acpi device:05: registered as cooling_device1 [ 688.807140] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) [ 688.807553] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input13 [ 688.809053] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). [ 688.809065] [drm] No driver support for vblank timestamp query. [ 689.950596] gma500 0000:00:02.0: Backlight lvds set brightness 7a127a12 [ 689.950627] [drm] Initialized gma500 1.0.0 2011-06-06 for 0000:00:02.0 on minor 0 Besides the VGA the driver detects a LVDS as well although there's none attached (the board does have a connector for it though): # grep -l ^connected /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-*/status /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/status /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-VGA-1/status It also states that both ports are disabled: # cat /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-*/enabled disabled disabled I didn't find a way to enable any of these ports via sysfs and X.org's modesetting driver fails either. Any pointers on howto debug this further are greatly appreciated. Cheers, -- Guido P.S.: This is the cards lspci information: 00:02.0 VGA compatible controller: Intel Corporation System Controller Hub (SCH Poulsbo) Graphics Controller (rev 07) (prog-if 00 [VGA controller]) Subsystem: Device 8100:8086 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 16 Region 0: Memory at fdf00000 (32-bit, non-prefetchable) [size=512K] Region 1: I/O ports at ff00 [size=8] Region 2: Memory at d0000000 (32-bit, non-prefetchable) [size=256M] Region 3: Memory at fdf80000 (32-bit, non-prefetchable) [size=256K] Expansion ROM at <unassigned> [disabled] 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- Capabilities: [b0] Vendor Specific Information: Len=07 <?> Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit- Address: 00000000 Data: 0000 Kernel driver in use: gma500 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/