Empty viewport when running examples on Tegra 2 / Linux / X11

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Compiled the LinuxX11 examples on Ubuntu 10.10 on a Tegra 2 (Seco T20 board)
2. Run any example
3. Example run without crash, but viewport remains empty (not even black)

What is the expected output? What do you see instead?

Examples do not show 3d output. On the other hand, NVIDIA's examples are 
running fine, and custom test code using Qt 4.7+GLESv2 works fine too.

What version of the product are you using? On what operating system?

Seco's BSP running Ubuntu 10.10 and NVIDIA L4T R12 drivers on Seco T20 Tegra2 
platform.

Please provide ay additional information below.

Compiles fine without error and executes without segfault. It's quite 
unexpected since it seems that this code was in fact tested on Ubuntu 
10.10/Tegra2..

Original issue reported on code.google.com by pierre.e...@gmail.com on 15 Jun 2012 at 7:11

[GoogleCodeExporter]

got the same result on pandaboard/ubuntu-11.10. PowerVR SGX540/OpenGL ES2 build 
1.7@296543

Original comment by kuii.zh...@gmail.com on 17 Aug 2012 at 4:00