<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [Intel NUC] HDMI1 sometimes stops working after resuming from s3 (a single monitor setup)" href="https://bugs.freedesktop.org/show_bug.cgi?id=106182#c20">Comment # 20</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [Intel NUC] HDMI1 sometimes stops working after resuming from s3 (a single monitor setup)" href="https://bugs.freedesktop.org/show_bug.cgi?id=106182">bug 106182</a> from <a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> Imre Deak</a> <pre>Looks like the HDMI retimer chip is in a weird state when the problem happens. To test that theory could you see if the following brings back the output on the HDMI-A-1 connector from the bad state? It resets the chip and forces a detect cycle. It needs the ioport Ubuntu package and you need to run it as root: v=$(outb 0x66 0x80; outb 0x62 0x1a; inb 0x62) outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $(( v | 8 )) sleep 0.1 outb 0x66 0x81; outb 0x62 0x1a; outb 0x62 $(( v & ~8 )) echo detect > /sys/class/drm/card0-HDMI-A-1/status Please provide a dmesg log after running the above in any case.</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 QA Contact for the bug.</li> </ul> </body> </html>