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PVR_K: (FAIL) SGXInit: Unable to validate device DDK version

Jon S.
Expert 1240 points


Hi all,


As I power on/off my DM8148EVM (EZSDK 5.03.01.15 provided kernel & rootfs) throughout the day, I occasionally see the following error message in the console at boot.  When this occurs, the OpenGL ES Demos fail to run from the Matrix launcher, presumably because something failed in setting up the 3D Graphics engine? 

When this happens, I can power cycle the board and everything's fine on the next power on.  The issue is fairly infrequent and intermittent.  Is this a known issue with a fix or workaround? Has anyone else even seen this?

Starting PVR
/dev/mem opened.
Memory mapped at address 0x4026a000.
Read at address  0x48180F04 (0x4026af04): 0x00000001
Write at address 0x48180F04 (0x4026af04): 0x00000000, readback 0x00000000
/dev/mem opened.
Memory mapped at address 0x40232000.
Read at address  0x48180900 (0x40232900): 0x00000102
Write at address 0x48180900 (0x40232900): 0x00000002, readback 0x00000002
/dev/mem opened.
Memory mapped at address 0x403ab000.
Read at address  0x48180920 (0x403ab920): 0x00040002
Write at address 0x48180920 (0x403ab920): 0x00000002, readback 0x00000002
PVR_K: (FAIL) SGXInit: Unable to validate device DDK version
Starting Matrix GUI application.

The only change I can think of having made is setting the default output to HDMI (720p), via the provided change_display and change_resolution scripts.