On Thu, Jul 5, 2018 at 10:40 PM, Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> wrote: > On Thu, Jul 05, 2018 at 03:58:36PM +0800, Chris Chiu wrote: >> Hi, >> We have few ASUS laptops X705FD (The new WiskyLake), X560UD (intel >> i5-8250U), X530UN (intel i7-8550U) share the same problem, which is >> the HDMI connector status stays connected even the HDMI cable has been >> unplugged. Look into the "/sys/class/drm/card0-HDMI-A-1/status" for >> checking the status while plug/unplug the HDMI, it shows >> "disconnected" before plug in HDMI cable, then switch to "connected" >> after plugin, and still stay "connected" after unplug. This would >> cause the audio output path cannot correctly switch from HDMI to >> internal speaker after unplugging the HDMI. >> >> I then try to verify with the latest kernel 4.18.0-rc3+, the bug still >> present. The full "dmesg" log is here. >> https://gist.github.com/mschiu77/d761d7c5cf191b7868d4d7788ae087f1 >> >> The HDMI cable is plugged in at ~26th second. >> "[ 26.214371] [drm:drm_detect_monitor_audio [drm]] Monitor has basic >> audio support" >> then unplug the HDMI at ~73th second. >> "[ 73.328361] [drm:drm_detect_monitor_audio [drm]] Monitor has basic >> audio support" >> >> Please advise what I can do to fix this. Thanks > > Pull the cable out faster? > > I presume this is the same old case of hpd disconnecting slightly > before ddc and we still manage to read the EDID when processing > the hpd irq. We kinda tried to fix that with the live status > check but that thing failed spectacularly. > > -- > Ville Syrjälä > Intel Thanks for the suggestion. I tried pulling the cable out faster, the status shows correctly. I also tried branch drm-tip of https://cgit.freedesktop.org/drm/drm-tip but the symptom persists. Anything I can help here? Or any old commit/patch I can try to do some experiments? Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
