<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - make 'respect_downstream_limits' configurable" href="https://bugs.freedesktop.org/show_bug.cgi?id=111516#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - make 'respect_downstream_limits' configurable" href="https://bugs.freedesktop.org/show_bug.cgi?id=111516">bug 111516</a> from <a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> Jani Nikula</a> <pre>Presumably if the display advertizes a mode on DVI that requires dual-link DVI to work, said DVI interface supports dual-link DVI. However, we have no way of knowing if the HDMI to DVI adapter you have actually supports dual-link or not; most don't. In your case, using a HDMI to single-link DVI adapter without limits would lead to a black screen, but with the current restriction it leads to a working albeit reduced resolution display. The way the limit works is filtering the EDID provided modes. So you just won't see the modes that exceed single-link DVI capabilities. However, if you explicitly add a user mode for 2560x1440 you should be able to use it without adding a new module parameter or patching the kernel. You can add the mode using xrandr.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>