Hi everyone,
Grr, seems my original response didn't make it to the list, as I was
using the wrong "From:" line. Fixed that up.
Good news: I managed to rebuild libc.so with IO_DEBUG defined. That
checks for null file pointers and handles them gracefully.
With this change, the shell comes up fine and I can *actually see
something* on my TF300T! :-D
Of course this is not the final fix: I need to track down the null file
pointer and fix it, instead of slowing down libc.
But I guess it works for now.
For details and zips please see
http://forum.xda-developers.com/showthread.php?t=2165171 for now.
Need a little rest now, then I will update the sources and the Ubuntu
wiki, where necessary.
f69m
On 02/27/2013 01:17 AM, Ricardo Salveti de Araujo wrote:
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,
--
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