<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - pulseaudio blocked in kernel" href="https://bugs.freedesktop.org/show_bug.cgi?id=95055#c23">Comment # 23</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - pulseaudio blocked in kernel" href="https://bugs.freedesktop.org/show_bug.cgi?id=95055">bug 95055</a> from <a class="email" href="mailto:brian@interlinx.bc.ca" title="Brian J. Murrell <brian@interlinx.bc.ca>"> Brian J. Murrell</a> <pre>(In reply to Raymond from <a href="show_bug.cgi?id=95055#c19">comment #19</a>) > <a href="ftp://download.nvidia.com/XFree86/gpu-hdmi-audio-document/gpu-hdmi-audio">ftp://download.nvidia.com/XFree86/gpu-hdmi-audio-document/gpu-hdmi-audio</a>. > html#_verify_your_eld_is_validPorts > > > hdmi-output-0: HDMI / DisplayPort (priority: 5900, latency offset: 0 usec, > available) > Properties: > device.icon_name = "video-display" > device.product.name = "24MP76" > Part of profile(s): output:hdmi-stereo > > > > did your graphic driver get the correct EDID of your LG 24MP76 and pass ELD > to audio driver ? I don't (usually) have any monitors connected to the HDMI. That must have been a/the one time I did to see if having a monitor on the HDMI port made the problem any better or worse. (In reply to Alexander E. Patrakov from <a href="show_bug.cgi?id=95055#c20">comment #20</a>) > > ...and there are no monitors connected to the NVidia GPU. So maybe it is > powered down. Try to disable this by adding this parameter to the kernel > command line: > > nouveau.runpm=0 OK. That will take effect on my next reboot. > Anyway, this is a kernel bug, not something that can be fixed in PulseAudio. > All we can do here is to gather some evidence. Happy to help with that in any way I can. > Please verify (without the above parameter) whether this command also gets > blocked in the kernel. Run it repeatedly just in case. > > amixer -c2 I only had to run it once: $ amixer -c2 [ didn't return] $ ps axf | grep amixer 27202 pts/1 D+ 0:00 | \_ amixer -c2 Here's the stack trace of it: task PC stack pid father amixer D ffff8802f995bb98 0 27202 3824 0x00000000 ffff8802f995bb98 ffff88049d6cda00 ffff88046a3b9e00 ffff8802f995c000 ffff8802f995bbd0 ffff8804afb0e080 ffff8804afb0e080 ffff88049c17a000 ffff8802f995bbb0 ffffffff8179cf95 000000010b2a9d8b ffff8802f995bc60 Call Trace: [<ffffffff8179cf95>] schedule+0x35/0x80 [<ffffffff8179fdb3>] schedule_timeout+0x123/0x270 [<ffffffff8110d350>] ? trace_event_raw_event_tick_stop+0x120/0x120 [<ffffffff817a0b5e>] ? _raw_spin_unlock_irqrestore+0xe/0x10 [<ffffffffa05dbf05>] snd_power_wait+0xb5/0x110 [snd] [<ffffffff810cddd0>] ? wake_up_q+0x70/0x70 [<ffffffffa05dd901>] snd_ctl_elem_info_user+0x61/0xf0 [snd] [<ffffffffa05e034c>] snd_ctl_ioctl+0x5ec/0x6c0 [snd] [<ffffffff813407fc>] ? selinux_file_ioctl+0x10c/0x1c0 [<ffffffff81241428>] do_vfs_ioctl+0x298/0x480 [<ffffffff813380b3>] ? security_file_ioctl+0x43/0x60 [<ffffffff81241689>] SyS_ioctl+0x79/0x90 [<ffffffff817a10ee>] entry_SYSCALL_64_fastpath+0x12/0x71 > Also try: > > alsamixer -c2 > > and mute/unmute various spdifs repeatedly. > > Finally: > > time pasuspender -- aplay -d 5 -D hdmi:2 -f dat /dev/zero Do you still want the above, given that amixer has blocked in the kernel? If so, I assume you want those if/when amixer does finally return? (In reply to Raymond from <a href="show_bug.cgi?id=95055#c22">comment #22</a>) > <a href="https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/">https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/</a> > hda/hda_eld.c > > do you have any output of snd_hdmi_print_eld_info How/where would I get that?</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> </ul> </body> </html>