On Fri, 2017-12-15 at 05:23 +0200, Tanu Kaskinen wrote: > On Tue, 2017-12-12 at 11:39 +0100, Hans de Goede wrote: > > Hi All, > > > > First of all good news, with kernel 4.15-rc2 and alsa-lib 1.1.5 > > audio over hdmi works on Cherry Trail devices after selecting > > the right output profile. > > > > But when unplugging the hdmi cable pa dies. Running pa under > > gdb says it gets killed with SIGKILL, so I think this is > > another realtime issue where it gets killed by the kernel for > > exceeding its CPU budget. > > > > I've a log file of a run which ends with SIGKILL here: > > https://fedorapeople.org/~jwrdegoede/pulseaudio-cht-hdmi.log > > > > What stands out is a whole lot of errors / underruns after: > > D: [pulseaudio] module-alsa-card.c: Jack 'HDMI/DP,pcm=1 Jack' is now unplugged > > D: [pulseaudio] device-port.c: Setting port hdmi-output-1 to status no > > > > So it seems that the problem is that pa still tries to use > > the device after the unplug, even though it sees the unplug > > before getting any errors. > > PA keeps using the device, because the card has no better ports > available. I think it would be good to switch to the off profile in > this situation, but I think it would be more beneficial to finally fix > that infinite loop. I'll try to make a patch for that. Patches submitted: https://patchwork.freedesktop.org/patch/195092/ https://patchwork.freedesktop.org/patch/195091/ https://patchwork.freedesktop.org/patch/195093/ -- Tanu https://www.patreon.com/tanuk
