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Unable to use a 1440p display

Questions and discussions related to Inforce 6640 Micro SBC

by Joachim » Thu May 24, 2018 2:28 am

Hello all,
The use of a particular 1440p display is crucial for my project.
I connect it to the 6640 SBC via HDMI and no image is displayed.
I looked at the adb logcat and I can see:

...
05-23 14:00:04.541 1202 1255 I DisplayManagerService: Display device added: DisplayDeviceInfo{"Built-in Screen": uniqueId="local:0", 1440 x 2560, modeId 1, defaultModeId 1, supportedModes [{id=1, width=1440, height=2560, fps=59.0}], colorTransformId 1, defaultColorTransformId 1, supportedColorTransforms [{id=1, colorTransform=0}], HdrCapabilities android.view.Display$HdrCapabilities@8b55292, density 240, 320.0 x 320.0 dpi, appVsyncOff 0, presDeadline 17949152, touch INTERNAL, rotation 0, type BUILT_IN, state UNKNOWN, FLAG_DEFAULT_DISPLAY, FLAG_ROTATES_WITH_CONTENT, FLAG_SECURE, FLAG_SUPPORTS_PROTECTED_BUFFERS}
...
05-23 14:00:06.776 1202 1202 I SystemServer: StartWindowManagerService
05-23 14:00:06.794 1202 1255 I WindowManager: No existing display settings /data/system/display_settings.xml; starting empty
05-23 14:00:06.801 573 663 I SDM : HWCSession::HWCUeventThreadHandler: Uevent HDMI = change@/devices/virtual/switch/hdmi
05-23 14:00:06.801 573 663 I SDM : HWCSession::HWCUeventThreadHandler: HDMI = disconnected
--------- beginning of crash
05-23 14:00:06.802 573 663 F libc : Fatal signal 11 (SIGSEGV), code 1, fault addr 0x100000800 in tid 663 (HWC_UeventThrea)
...

The device is then alive but no display whatsoever.

NB: Of course, The 1440p display work well on a standard PC and the 6640 SBC work well with a 1080p display.
I can attach the full logcat if needed.
Device Build number is : msm8996-userdebug 7.0 IFC-6640-Nougat-Relv-2.0 eng.inforc.20170216.174459 test-keys

Please can someone give me advice on how to make my display work?

Thanks a lot.
Joachim
 
Posts: 1
Joined: Wed May 23, 2018 6:15 am

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