It seems the same problem also applies to the 3.4.0-5 kernel in the Ubuntu repository. The kernel image in the 13.04 release (https://launchpad.net/ubuntu/+source/linux-chromebook/3.4.0-5/+build/4314955) works for me, but the one in the 13.10 and 14.04 releases (https://launchpad.net/ubuntu/+source/linux-chromebook/3.4.0-5.1/+build/4575433) does not. According to the build log, the newer image was built with gcc 4.8.
It seems the same problem also applies to the 3.4.0-5 kernel in the Ubuntu repository. The kernel image in the 13.04 release (https:/ /launchpad. net/ubuntu/ +source/ linux-chromeboo k/3.4.0- 5/+build/ 4314955) works for me, but the one in the 13.10 and 14.04 releases (https:/ /launchpad. net/ubuntu/ +source/ linux-chromeboo k/3.4.0- 5.1/+build/ 4575433) does not. According to the build log, the newer image was built with gcc 4.8.