<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [SKL Xeon DP-to-VGA] no hotplug signal from DP-to-VGA branch device after unplug/replug cycle" href="https://bugs.freedesktop.org/show_bug.cgi?id=101044#c23">Comment # 23</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [SKL Xeon DP-to-VGA] no hotplug signal from DP-to-VGA branch device after unplug/replug cycle" href="https://bugs.freedesktop.org/show_bug.cgi?id=101044">bug 101044</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>(In reply to Mika Kahola from <a href="show_bug.cgi?id=101044#c22">comment #22</a>) > Could a solution here be that if we have a branch device that doesn't > support DPCD OUI we set DPMS OFF in that case as Ville's patch suggests? We might want to limit this to DPCD 1.1 devices as those don't have the BRANCH_DEVICE_CTRL register, and for DPCD 1.2+ we should perhaps just try to frob BRANCH_DEVICE_CTRL to use long pulses instead. In fact long pulse should be the default, but I'm not sure I'd trust these things that far. Not sure we can even trust that they respect the setting in BRANCH_DEVICE_CTRL at all, but at least we could try it and see.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>