ubuntu-phone team mailing list archive

[Ricardo Salveti de Araujo <ricardo.salveti@xxxxxxxxxxxxx>]

On 02/26/2013 12:26 PM, f69m wrote:
> Hello,
>
> Trying to port Ubuntu Touch to the ASUS Transformer TF300T.
>
> The port does boot and I can log in via adb, but the display stays black.
> The reason is that qml-phone-shell segfaults trying to load EGL.
>
> Here is the bottom of strace output:
>
> --
> open("/system/build.prop", O_RDONLY)    = 9
> fstat64(9, {st_mode=S_IFREG|0644, st_size=2406, ...}) = 0
> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> 0) = 0x40076000
> read(9, "# begin build properties\n# autogenerated by build"..., 4096) =
> 2406
> read(9, "", 4096)                       = 0
> close(9)                                = 0
> munmap(0x40076000, 4096)                = 0
> writev(5, [{"\3", 1}, {"NvOsDebugPrintf\0", 16}, {"Attempting to load
> EGL implementation /system/lib//egl/libEGL_tegra_impl, version:
> 1.0.0\n\0", 90}], 3) = 107
> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> +++ killed by SIGSEGV +++
> --
>
> If it helps, I have kept a copy of the full strace output.

First make sure you have hybris and platform-api built and installed at 
the android side (see phablet-dev-bootstrap).

Second, try exporting GRAPHICS=NVIDIA before starting the shell, that 
might help as we know the nvidia drivers uses pthread a lot, which is 
not properly solved yet at hybris (there's a wip branch afaik, will try 
to get that public).

> As I managed to get SSH login and apt-get to work via an adb tunnel, I
> am prepared to start serious debugging, but I would appreciate if
> someone could point me at the right place to start looking.

https://wiki.ubuntu.com/Touch/Core/UbuntuDebugAndroid might help you as 
well, if you want to give gdb a try :-)

Cheers,
--
Ricardo Salveti de Araujo