<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Strong noise (unintelligible) when playing through the analog output using mmap" href="https://bugs.freedesktop.org/show_bug.cgi?id=87202#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Strong noise (unintelligible) when playing through the analog output using mmap" href="https://bugs.freedesktop.org/show_bug.cgi?id=87202">bug 87202</a> from <a class="email" href="mailto:msanchez@gnome.org" title="Mario Sanchez Prada <msanchez@gnome.org>"> Mario Sanchez Prada</a> <pre>Created <a href="attachment.cgi?id=110736" name="attach_110736" title="Output of dmesg when loading the snd-hda-intel module">attachment 110736</a> <a href="attachment.cgi?id=110736&action=edit" title="Output of dmesg when loading the snd-hda-intel module">[details]</a> Output of dmesg when loading the snd-hda-intel module (In reply to David Henningsson from <a href="show_bug.cgi?id=87202#c3">comment #3</a>) > I still have the feeling this is kernel/driver/hw related. At least we have > this message in the log: > > [ 327.857108] hda-intel 0000:00:1b.0: Unstable LPIB (17628 >= 4408); > disabling LPIB delay counting > > Could you tell if this is related to when the error happens for the first > time? I can't really tell, as I could not see anymore that message in the output of dmesg after trying this morning (even if I managed to reproduce the noise again). The only output I can see in dmesg happens at the time of loading the snd-hda-intel module, which I'm attaching right now. > Also, when this error is happening, do you have *constant* entries in the > debug log about rewinds? It's natural to have them when you change volume, > but not for them to persist after the volume change is completed. No constant entries, only when changing the volume or when switching between output devices (headphones <-> HDMI). By the way, sometimes it's harder than other times for me to get the noise by simply modifying the volume (although I eventually get the noise anyway), but when that happens just switching to HDMI and then back to headphones usually makes me get the noise easily (after no more than 1-3 attempts, normally). Not sure how relevant this is to the discussion, but I thought I would mention it because I saw rewinds are also involved when switching between outputs.</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>