Panda 4430 crashes and hangs during power management test.

[Botao]

On Panda 4430 board, when run this test:

https://wiki.linaro.org/Platform/QA/TestCases/Ubuntu#Power_Management

After execute this command:

sudo lava-test run pwrmgmt

System crashes and display turns to black screen, only a white mouse pointer leaves there.

Observed on hardware pack:

http://snapshots.linaro.org/precise/hwpacks/lt-panda-x11-base/201/hwpack_linaro-lt-panda-x11-base_20120725-201_armhf_supported.tar.gz

with ubuntu rootfs image:

http://snapshots.linaro.org/precise/images/ubuntu-desktop/313/linaro-precise-ubuntu-desktop-20120725-313.tar.gz

Refer to attachment to get serial log output. The display mode is DVI-D + Unity 2D. No similar behaviour observed on Panda 4460 board.

However, "powertop" & "powerdebug" work well except this issue:

https://bugs.launchpad.net/linaro-ubuntu/+bug/1024369

[Botao (botao-sun)]

Power Management tests now work well on Panda 4430 board with Linaro ubuntu pre-built image:

http://snapshots.linaro.org/precise/pre-built/lt-panda-x11-base/219/lt-panda-x11-base-precise_ubuntu-desktop_20120803-219.img.gz

The display mode is HDMI. Board keeps alive after run tests, both UI & serial console.