Comment 40 for bug 1152736

I don't believe we ever performed a kernel bisect to identify the commit that introduced this regression. The discussion on LKML indicates v3.8-r4 did not exhibit this issue, but v3.8-rc7 did. Would it be possible for you to test the v3.8-rc4 kernel[0] to see if the bug happens there? If it doesn't, test v3.8-rc5[1] then v3.8-rc6[2] if needed.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-rc4-raring/
[1] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-rc5-raring/
[2] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-rc6-raring/