<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Nouveau does DMA to/from unexpected address" href="https://bugs.freedesktop.org/show_bug.cgi?id=66696#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Nouveau does DMA to/from unexpected address" href="https://bugs.freedesktop.org/show_bug.cgi?id=66696">bug 66696</a> from <a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> Ilia Mirkin</a> <pre>Looking at that redhat bug report, someone added comments about similar issues on NV43 a while after it was closed. Since you have a NV4B, I expect that the issue is the same. Has this always been happening, or is this a new issue? (Guessing the former...) If it's a new issue, doing a kernel bisect would narrow down the commit that broke things. If it has always been like that, does this issue occur with the nvidia binary driver? If not, doing an mmiotrace would be helpful (guide at <a href="https://wiki.ubuntu.com/X/MMIOTracing">https://wiki.ubuntu.com/X/MMIOTracing</a>). The register written to by 4eb3033c only exists on NV50+ according to envytools. Are all the errors the same (i.e. trying to read from address 0) or does it vary?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>