Created attachment 177991 [details] Dmesg file, normal boot. Kernel-4.1.0-0.rc5.el7.elrepo.x86_64 built from linux-4.1-rc5 sources. Hardware -- 00:1b.0 Audio device [0403]: Intel Corporation 82801I (ICH9 Family) HD Audio Controller [8086:293e] (rev 02) At system boot, as the driver is loaded (having reached the sound card target), there is a loud squawk followed by a sharp click. At system shutdown there is a sharp click. The dmesg file is attached.
Is this a regression from earlier kernels? In anyway, please give alsa-info.sh output. Run the script with --no-upload option and attach the output to bugzilla.
Yes, this is a regression which has occurred with the 4.1-rcX series. (I have now set the regression flag.) Excuse my ignorance but where can I find a copy of the alsa-info.sh script, please?
See Documentation/sound/alsa/HD-Audio.txt. Also, try the patch below.
Created attachment 178041 [details] Test fix
Created attachment 178091 [details] Output generated by alsa-info.sh
(In reply to Takashi Iwai from comment #4) > Created attachment 178041 [details] > Test fix I am pleased to report that the above patch, attachment 178041 [details], when applied to the 4.1-rc5 sources allows a "good" kernel to be built. There is no longer any squawk/click at sound-card initialisation nor any click at system shutdown. Thank you for your prompt attention to this problem.
Thanks, I queued the fix now. It'll be included in the next pull request.