[Bug 63101] Hard lockup whel launching games like TF2 on kernels 3.11.5 and 3.12 rc4 and above

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=63101

--- Comment #11 from Alex Deucher <alexdeucher at gmail.com> ---
(In reply to Kertesz Laszlo from comment #10)
> This issue has to do with the radeon driver, because if i dont append
> radeon.dpm=1 to the kernel boot options, TF2 launches even with latest 3.12
> rc5+ kernel (but it has dismal performance).

If it was dpm specific you should have mentioned that.  Make sure your kernel
has this patch:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4076a65544e2de310cbf4eaadb13ee15bbfaaf4f

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