=>Testing Environment: Blacksand Image from http://yoctobuild01.jf.intel.com/milestone/20101218-1/atom-pc/x86_32/poky-image-sdk-live-atom-pc-20101219075629.hddimg.bz2 =>Bug Description: Some error information prompted when run dmesg command =>Reproduce Steps: 1.Launch the terminal. 2.Input this command:dmesg |grep -i error 3.Then find the following error: [drm:drm_edid_is_valid] *ERROR* Raw EDID: [drm:drm_edid_is_valid] *ERROR* Raw EDID: [drm:drm_edid_is_valid] *ERROR* Raw EDID: [drm:drm_edid_is_valid] *ERROR* Raw EDID: [drm:drm_edid_is_valid] *ERROR* Raw EDID: [drm:drm_edid_is_valid] *ERROR* Raw EDID: [drm:drm_edid_is_valid] *ERROR* Raw EDID: [drm:drm_edid_is_valid] *ERROR* Raw EDID: [drm:drm_edid_is_valid] *ERROR* Raw EDID: [drm:drm_edid_is_valid] *ERROR* Raw EDID: [drm:drm_edid_is_valid] *ERROR* Raw EDID: [drm:drm_edid_is_valid] *ERROR* Raw EDID:
I believe that this error can be ignored, it is caused by the type of display attached (or maybe because there is not display) to the device, which might not be reporting it's EDID data correctly.
Kunwei, Did you ever see this Error message before? Did you change monitor when test this image?
This is first time to executed the Blacksand test and found the issue,so I will change another monitor to try it,also jiajun will help to check it again.
(In reply to comment #3) > This is first time to executed the Blacksand test and found the issue,so I will > change another monitor to try it,also jiajun will help to check it again. We did not change any monitor during testing.
This appears related to http://lkml.org/lkml/2010/9/18/46. The BlackSand has digital outputs that are not connected to the current module.
Possibly related. https://patchwork.kernel.org/patch/83556/
All blacksand bugs should be assigned to me in the future.
With linux-yocto_3.0, the dmesg is cleaner. As 3.0 will be the default kernel for the n450 for the 1.1 release, I propose we close this as WONTFIX. linux 3.0.1 output with a VGA connected display: Linux agpgart interface v0.103 agpgart-intel 0000:00:00.0: Intel GMA3150 Chipset agpgart-intel 0000:00:00.0: detected gtt size: 524288K total, 262144K mappable agpgart-intel 0000:00:00.0: detected 8192K stolen memory agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0x40000000 [drm] Initialized drm 1.1.0 20060810 i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). [drm] Driver supports precise vblank timestamp query. vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:m [drm] initialized overlay support Raw EDID: Raw EDID: Raw EDID: Raw EDID: i915 0000:00:02.0: VGA-1: EDID block 0 invalid. fbcon: inteldrmfb (fb0) is primary device Console: switching to colour frame buffer device 128x48 fb0: inteldrmfb frame buffer device drm: registered panic notifier acpi device:19: registered as cooling_device3 input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/in3 ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 linux 3.0 with no display connected: Linux agpgart interface v0.103 agpgart-intel 0000:00:00.0: Intel GMA3150 Chipset agpgart-intel 0000:00:00.0: detected gtt size: 524288K total, 262144K mappable agpgart-intel 0000:00:00.0: detected 8192K stolen memory agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0x40000000 [drm] Initialized drm 1.1.0 20060810 i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). [drm] Driver supports precise vblank timestamp query. vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:m [drm] initialized overlay support fbcon: inteldrmfb (fb0) is primary device Console: switching to colour frame buffer device 128x48 fb0: inteldrmfb frame buffer device drm: registered panic notifier acpi device:19: registered as cooling_device3 input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/in3 ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0