<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#c13">Comment # 13</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:amy.shih@advantech.com.tw" title="amy.shih <amy.shih@advantech.com.tw>"> amy.shih</a> <pre>Hi Sir, We added the function "intel_dp_sink_dpmspatch" patch on "drm-intel-nightly" source code & rebuild the kernel, the VGA no signal issue is gone. We also test the patch on CentOS 7.3.1611 with kernel 3.10.0-514.10.2, the VGA no signal issue is also gone. Enclosed dmesg logs are for patch on "drm-intel-nightly" source code. [patch_dmesg_after_boot_up.log]: dmesg after booting up the OS with VGA cable connected. [patch_dmesg_after_pull_out_VGA_cable.log]: dmesg after pull out VGA cable. [patch_dmesg_after_pull_in_VGA_cable.log] dmesg after pull in VGA cable. Could you explain why we need to add this patch to make VGA work & does this patch have any side effect? Thank you! Amy Shih <a href="mailto:Amy.Shih@advantech.com.tw">Amy.Shih@advantech.com.tw</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>