<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Hang during boot when DPM is on (R9 270X)" href="https://bugs.freedesktop.org/show_bug.cgi?id=76490#c35">Comment # 35</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Hang during boot when DPM is on (R9 270X)" href="https://bugs.freedesktop.org/show_bug.cgi?id=76490">bug 76490</a> from <a class="email" href="mailto:tdroste@gmx.de" title="Tobias Droste <tdroste@gmx.de>"> Tobias Droste</a> <pre>I have to do this: { PCI_VENDOR_ID_ATI, 0x6810, 0x174b, 0xe271, 85000, 90000 }, This is with a Sapphire Radeon R9 270X 2GB GDDR5. A higher value for either sclk or mclk results in an instant freeze as soon as the radeon kernel module gets loaded. I'm running linux 4.1 from airlied drm-fixes branch. I'm quite annoyed by this, because of 3 reasons: 1) I bought this card, because my old card had this PM bug and this didn't look like it would be fixed any time soon: <a href="https://bugzilla.kernel.org/show_bug.cgi?id=60523">https://bugzilla.kernel.org/show_bug.cgi?id=60523</a> 2) With the settings above the performance of the card is actually *worse* than the old card (+ additional graphical glitches...) 3) This card works fine with any sclk/mclk combination with the same vddc (1238mV) in windows and I can overclock there! I'm also wondering why I get a different VBIOS size if I get the bios in windows (gpu-z) and linux. Is it because different firmware gets loaded? The (working) vbios under windows is twice as large as the linux one (see attachments).</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>