[Linux-exynos] 3.17 kernel on ODROID-U3

Sid Boyce sboyce at blueyonder.co.uk
Tue Oct 14 03:31:57 CEST 2014


The kernel builds and boots.
The only problem is "No screens found" in Xorg.0.log.
[    28.894] (WW) Falling back to old probe method for armsoc
[    28.894] (II) No BusID or DriverName specified - opening /dev/dri/card0
[    28.894] (EE) ERROR: Cannot open a connection with the DRM - No such 
file or directory
[    28.895] (EE) No devices detected.

FAIL-3.17.0
-----------
root at odroidu3:~# dmesg|grep drm
[    0.000000] Kernel command line: console=tty1 
console=ttySAC1,115200n8 drm_kms_helper.edid_firmware=edid/1920x1080.bin 
root=UUID=e139ce78-9841-40fe-8823-96a304a09859 rootwait ro mem=2047M
[    1.298880] [drm] Initialized drm 1.1.0 20060810

Good 3.8.13.28
-----------------
root at odroidu3:~# dmesg|grep drm
[    0.000000] Kernel command line: console=tty1 console=ttySAC1,115200 
mem=2047M console=tty1 console=ttySAC1,115200n8 
drm_kms_helper.edid_firmware=edid/1920x1080.bin 
root=UUID=e139ce78-9841-40fe-8823-96a304a09859 rootwait ro mem=2047M
[    1.576780] [drm] Initialized drm 1.1.0 20060810
[    1.606189] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[    1.612189] [drm] No driver support for vblank timestamp query.
[    1.618715] [drm] Got external EDID base block and 0 extensions from 
"edid/1920x1080.bin" for connector "HDMI-A-1"
[    1.812221] exynos-drm exynos-drm: fb0:  frame buffer device
[    1.817844] exynos-drm exynos-drm: registered panic notifier
[    1.823485] [drm] Initialized exynos 1.0.0 20110530 on minor 0
[   17.330577] [drm] Got external EDID base block and 0 extensions from 
"edid/1920x1080.bin" for connector "HDMI-A-1"
[   17.331256] [drm] Got external EDID base block and 0 extensions from 
"edid/1920x1080.bin" for connector "HDMI-A-1"

Over a ssh login Xvfb works fine.

The monitor is a 22" HDMI which works with 3.8.13.28 kernel and there is 
no .
root at odroidu3:/b2/XXX/linux-3.17.0# grep DRM .config
CONFIG_DRM=y
CONFIG_DRM_USB=m
CONFIG_DRM_KMS_HELPER=y
CONFIG_DRM_KMS_FB_HELPER=y
CONFIG_DRM_LOAD_EDID_FIRMWARE=y
CONFIG_DRM_EXYNOS=y
CONFIG_DRM_EXYNOS_IOMMU=y
CONFIG_DRM_EXYNOS_DMABUF=y
CONFIG_DRM_EXYNOS_HDMI=y
CONFIG_DRM_EXYNOS_G2D=y
CONFIG_DRM_UDL=m
Regards
Sid.

-- 
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks




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