[Bug 76490] Hang during boot when DPM is on (R9 270X)

https://bugs.freedesktop.org/show_bug.cgi?id=76490

--- Comment #68 from Benjamin Bellec b.bellec@gmail.com --- If I have to read the VBIOS and add I quirk in the kernel, why the kernel can't do this by himself ?

Moreover, I saw the previous quirk in the kernel, the max memory clock is often set to "120000". I guess it stands for 1.2GHz QDR which is equivalent to 4.8GHz. My card, like all the R7 370 are supposed to work at 5.6GHz so this is a serious lost of performance.

At the moment I will just return my card.