On Tue, Jun 21, 2011 at 7:22 PM, Amit Mahajan amit.mahajan@b-labs.com wrote:
On Tue, 2011-06-21 at 12:14 +0530, Avik Sil wrote:
On Tuesday 21 June 2011 12:06 PM, Amit Mahajan wrote:
Hi,
I have booted panda board using 11.05 natty release of ubuntu. It worked great.
Now, I am trying to compile the kernel myself. I am using the sources from tarball provided on 11.05 release page as well as from linaro git 2.6.38 tree.
I have extracted the .config from running ubuntu(of 11.05 LEB) and using it to compile my own kernels. Then I am just replacing the uImage on sdcard(generated using 11.05 LEB) by my compiled kernel.
Boot process goes fine till the init process but then it fails to bring on the graphics and goes to console mode.
Any help on this?
You may want to install modules on the SD card too:
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- INSTALL_MOD_PATH=/media/rootfs modules_install
I am getting these errors while building the modules. I have linaro gcc-4.5.1. Is it related to older gcc?
AS arch/arm/boot/compressed/lib1funcs.o LD arch/arm/boot/compressed/vmlinux OBJCOPY arch/arm/boot/zImage Kernel: arch/arm/boot/zImage is ready ERROR: "__aeabi_uldivmod" [sound/soc/codecs/snd-soc-wm8974.ko] undefined! ERROR: "__aeabi_uldivmod" [sound/soc/codecs/snd-soc-wm8940.ko] undefined! ERROR: "__aeabi_uldivmod" [sound/soc/codecs/snd-soc-wm8510.ko] undefined! WARNING: modpost: Found 2 section mismatch(es). To see full details build your kernel with: 'make CONFIG_DEBUG_SECTION_MISMATCH=y' make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2
Hi Amit. This is a known issue with the compiler. See LP: #771832 at: https://bugs.launchpad.net/gcc-linaro/+bug/771832
The problem exists in all 4.6 based compilers. The work around is to change the kernel configuration and disable Device Drivers -> Sound card support -> Advanced Linux Sound Architecture -> ALSA for SoC audio support -> Build all ASoC CODEC drivers.
-- Michael