TDA4VL-Q1: MESA-LOADER: failed to open swrast

Jeff,

Chieh Hung Chuang said:

We follow this ticket: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1218307/faq-how-can-i-analyze-a-gpu-graphics-process-unit-driver-or-hardware-issue to produce log file, but it seems fail to open PVR device? Please help us check what happened. And the log file is too big to put here...

No problem, you are correct. The device is failing to open and the driver is falling back (or trying to fall back) to software rasterization (cpu-based rendering).

The first check would be to ensure that the GPU driver is added properly in your filesystem. Can you please send the following command output:

'dmesg | grep -i pvr'

'dmesg | grep -i gpu'

Let's see what happened as the driver tried to insert.

Regards,

Erick

Hi Erick,

I get nothing while running 'dmesg | grep -i pvr' and 'dmesg | grep -i gpu'.

And I found that it can load pvr/gpu driver by using default kernel. But it doesn't load prv/gpu driver after we modify device tree and rebuild the kernel+dtb. Compare these two SD cards. In our new SD card, "pvrsrvkm.ko" isn't existed, and I can't find any pvrsrvkm information in these 3 files: modules.alias, modules.dep, and modules.symbols. If I copy "pvrsrvkm.so" from old SD card (using default kernel) to new SD card, it can then load driver and run opengl demo successfully.

We use Linux SDK 8.6.1.2. And I can't find the process about how it build or install pvrsrvkm.ko in the Makefile. Could you please check it?

BR,

Jeff

Hi Erick,

I can't run "make ti-img-rogue-driver" and "make ti-img-rogue-driver_install". These 2 targets are not existed in Makefile in Linux SDK 8.6.1.2. It is unreasonable to ask us to compile and install manually.The document in SDK package doesn't even mention it. Please update the Makefile if possible, thanks.

BR,

Jeff

Hi Erick,

Got it. And it does work.

Thanks.

BR,

Jeff